diff --git a/apps/applications/serializers/application.py b/apps/applications/serializers/application.py
index 10c95da24..8f6d103c0 100644
--- a/apps/applications/serializers/application.py
+++ b/apps/applications/serializers/application.py
@@ -18,15 +18,19 @@ class ApplicationSerializerMixin(serializers.Serializer):
     attrs = MethodSerializer()
 
     def get_attrs_serializer(self):
-        request = self.context['request']
-        query_type = request.query_params.get('type')
-        query_category = request.query_params.get('category')
-        if query_type:
-            serializer_class = type_serializer_classes_mapping.get(query_type)
-        elif query_category:
-            serializer_class = category_serializer_classes_mapping.get(query_category)
+        serializer_class = None
+        if isinstance(self.instance, models.Application):
+            instance_type = self.instance.type
+            serializer_class = type_serializer_classes_mapping.get(instance_type)
         else:
-            serializer_class = None
+            request = self.context['request']
+            query_type = request.query_params.get('type')
+            query_category = request.query_params.get('category')
+            if query_type:
+                serializer_class = type_serializer_classes_mapping.get(query_type)
+            elif query_category:
+                serializer_class = category_serializer_classes_mapping.get(query_category)
+
         if serializer_class is None:
             serializer_class = serializers.Serializer
         serializer = serializer_class()
diff --git a/apps/applications/serializers/attrs/application_category/cloud.py b/apps/applications/serializers/attrs/application_category/cloud.py
index 60739d508..f5fa71810 100644
--- a/apps/applications/serializers/attrs/application_category/cloud.py
+++ b/apps/applications/serializers/attrs/application_category/cloud.py
@@ -6,4 +6,4 @@ __all__ = ['CloudSerializer']
 
 
 class CloudSerializer(serializers.Serializer):
-    cluster = serializers.CharField(max_length=1024, label=_('Cluster'))
+    cluster = serializers.CharField(max_length=1024, label=_('Cluster'), allow_null=True)
diff --git a/apps/applications/serializers/attrs/application_category/db.py b/apps/applications/serializers/attrs/application_category/db.py
index cbe00570c..f2967963e 100644
--- a/apps/applications/serializers/attrs/application_category/db.py
+++ b/apps/applications/serializers/attrs/application_category/db.py
@@ -8,9 +8,8 @@ __all__ = ['DBSerializer']
 
 
 class DBSerializer(serializers.Serializer):
-    host = serializers.CharField(max_length=128, label=_('Host'))
-    port = serializers.IntegerField(label=_('Port'))
-    # 添加allow_null=True，兼容之前数据库中database字段为None的情况
+    host = serializers.CharField(max_length=128, label=_('Host'), allow_null=True)
+    port = serializers.IntegerField(label=_('Port'), allow_null=True)
     database = serializers.CharField(
         max_length=128, required=True, allow_null=True, label=_('Database')
     )
diff --git a/apps/applications/serializers/attrs/application_category/remote_app.py b/apps/applications/serializers/attrs/application_category/remote_app.py
index 5520e2fc2..9fa691976 100644
--- a/apps/applications/serializers/attrs/application_category/remote_app.py
+++ b/apps/applications/serializers/attrs/application_category/remote_app.py
@@ -29,8 +29,12 @@ class CharPrimaryKeyRelatedField(serializers.PrimaryKeyRelatedField):
 
 class RemoteAppSerializer(serializers.Serializer):
     asset_info = serializers.SerializerMethodField()
-    asset = CharPrimaryKeyRelatedField(queryset=Asset.objects, required=False, label=_("Asset"))
-    path = serializers.CharField(max_length=128, label=_('Application path'))
+    asset = CharPrimaryKeyRelatedField(
+        queryset=Asset.objects, required=False, label=_("Asset"), allow_null=True
+    )
+    path = serializers.CharField(
+        max_length=128, label=_('Application path'), allow_null=True
+    )
 
     @staticmethod
     def get_asset_info(obj):
diff --git a/apps/applications/serializers/attrs/application_type/chrome.py b/apps/applications/serializers/attrs/application_type/chrome.py
index 13b0c21f9..5b9e5147a 100644
--- a/apps/applications/serializers/attrs/application_type/chrome.py
+++ b/apps/applications/serializers/attrs/application_type/chrome.py
@@ -11,15 +11,16 @@ class ChromeSerializer(RemoteAppSerializer):
     CHROME_PATH = 'C:\Program Files (x86)\Google\Chrome\Application\chrome.exe'
 
     path = serializers.CharField(
-        max_length=128, label=_('Application path'), default=CHROME_PATH
+        max_length=128, label=_('Application path'), default=CHROME_PATH, allow_null=True,
     )
     chrome_target = serializers.CharField(
-        max_length=128, allow_blank=True, required=False, label=_('Target URL')
+        max_length=128, allow_blank=True, required=False, label=_('Target URL'), allow_null=True,
     )
     chrome_username = serializers.CharField(
-        max_length=128, allow_blank=True, required=False, label=_('Username')
+        max_length=128, allow_blank=True, required=False, label=_('Username'), allow_null=True,
     )
     chrome_password = serializers.CharField(
-        max_length=128, allow_blank=True, required=False, write_only=True, label=_('Password')
+        max_length=128, allow_blank=True, required=False, write_only=True, label=_('Password'),
+        allow_null=True
     )
 
diff --git a/apps/applications/serializers/attrs/application_type/custom.py b/apps/applications/serializers/attrs/application_type/custom.py
index 78e26ae69..0cbc09cf9 100644
--- a/apps/applications/serializers/attrs/application_type/custom.py
+++ b/apps/applications/serializers/attrs/application_type/custom.py
@@ -10,14 +10,18 @@ __all__ = ['CustomSerializer']
 
 class CustomSerializer(RemoteAppSerializer):
     custom_cmdline = serializers.CharField(
-        max_length=128, allow_blank=True, required=False, label=_('Operating parameter')
+        max_length=128, allow_blank=True, required=False, label=_('Operating parameter'),
+        allow_null=True,
     )
     custom_target = serializers.CharField(
-        max_length=128, allow_blank=True, required=False, label=_('Target url')
+        max_length=128, allow_blank=True, required=False, label=_('Target url'),
+        allow_null=True,
     )
     custom_username = serializers.CharField(
-        max_length=128, allow_blank=True, required=False, label=_('Username')
+        max_length=128, allow_blank=True, required=False, label=_('Username'),
+        allow_null=True,
     )
     custom_password = serializers.CharField(
-        max_length=128, allow_blank=True, required=False, write_only=True, label=_('Password')
+        max_length=128, allow_blank=True, required=False, write_only=True, label=_('Password'),
+        allow_null=True,
     )
diff --git a/apps/applications/serializers/attrs/application_type/mysql.py b/apps/applications/serializers/attrs/application_type/mysql.py
index f9854333e..bb4e56c33 100644
--- a/apps/applications/serializers/attrs/application_type/mysql.py
+++ b/apps/applications/serializers/attrs/application_type/mysql.py
@@ -8,7 +8,7 @@ __all__ = ['MySQLSerializer']
 
 
 class MySQLSerializer(DBSerializer):
-    port = serializers.IntegerField(default=3306, label=_('Port'))
+    port = serializers.IntegerField(default=3306, label=_('Port'), allow_null=True)
 
 
 
diff --git a/apps/applications/serializers/attrs/application_type/mysql_workbench.py b/apps/applications/serializers/attrs/application_type/mysql_workbench.py
index 2eaa89858..8025ec80f 100644
--- a/apps/applications/serializers/attrs/application_type/mysql_workbench.py
+++ b/apps/applications/serializers/attrs/application_type/mysql_workbench.py
@@ -11,20 +11,26 @@ class MySQLWorkbenchSerializer(RemoteAppSerializer):
     MYSQL_WORKBENCH_PATH = 'C:\Program Files\MySQL\MySQL Workbench 8.0 CE\MySQLWorkbench.exe'
 
     path = serializers.CharField(
-        max_length=128, label=_('Application path'), default=MYSQL_WORKBENCH_PATH
+        max_length=128, label=_('Application path'), default=MYSQL_WORKBENCH_PATH,
+        allow_null=True,
     )
     mysql_workbench_ip = serializers.CharField(
-        max_length=128, allow_blank=True, required=False, label=_('IP')
+        max_length=128, allow_blank=True, required=False, label=_('IP'),
+        allow_null=True,
     )
     mysql_workbench_port = serializers.IntegerField(
-        required=False, label=_('Port')
+        required=False, label=_('Port'),
+        allow_null=True,
     )
     mysql_workbench_name = serializers.CharField(
-        max_length=128, allow_blank=True, required=False, label=_('Database')
+        max_length=128, allow_blank=True, required=False, label=_('Database'),
+        allow_null=True,
     )
     mysql_workbench_username = serializers.CharField(
-        max_length=128, allow_blank=True, required=False, label=_('Username')
+        max_length=128, allow_blank=True, required=False, label=_('Username'),
+        allow_null=True,
     )
     mysql_workbench_password = serializers.CharField(
-        max_length=128, allow_blank=True, required=False, write_only=True, label=_('Password')
+        max_length=128, allow_blank=True, required=False, write_only=True, label=_('Password'),
+        allow_null=True,
     )
diff --git a/apps/applications/serializers/attrs/application_type/oracle.py b/apps/applications/serializers/attrs/application_type/oracle.py
index 73f637990..63b905714 100644
--- a/apps/applications/serializers/attrs/application_type/oracle.py
+++ b/apps/applications/serializers/attrs/application_type/oracle.py
@@ -8,5 +8,5 @@ __all__ = ['OracleSerializer']
 
 
 class OracleSerializer(DBSerializer):
-    port = serializers.IntegerField(default=1521, label=_('Port'))
+    port = serializers.IntegerField(default=1521, label=_('Port'), allow_null=True)
 
diff --git a/apps/applications/serializers/attrs/application_type/pgsql.py b/apps/applications/serializers/attrs/application_type/pgsql.py
index 236cad557..1b3cc2ef4 100644
--- a/apps/applications/serializers/attrs/application_type/pgsql.py
+++ b/apps/applications/serializers/attrs/application_type/pgsql.py
@@ -8,5 +8,5 @@ __all__ = ['PostgreSerializer']
 
 
 class PostgreSerializer(DBSerializer):
-    port = serializers.IntegerField(default=5432, label=_('Port'))
+    port = serializers.IntegerField(default=5432, label=_('Port'), allow_null=True)
 
diff --git a/apps/applications/serializers/attrs/application_type/vmware_client.py b/apps/applications/serializers/attrs/application_type/vmware_client.py
index 66b2bbcf9..1ed44e656 100644
--- a/apps/applications/serializers/attrs/application_type/vmware_client.py
+++ b/apps/applications/serializers/attrs/application_type/vmware_client.py
@@ -15,14 +15,18 @@ class VMwareClientSerializer(RemoteAppSerializer):
     VMWARE_CLIENT_PATH = ''.join(PATH.split())
 
     path = serializers.CharField(
-        max_length=128, label=_('Application path'), default=VMWARE_CLIENT_PATH
+        max_length=128, label=_('Application path'), default=VMWARE_CLIENT_PATH,
+        allow_null=True
     )
     vmware_target = serializers.CharField(
-        max_length=128, allow_blank=True, required=False, label=_('Target URL')
+        max_length=128, allow_blank=True, required=False, label=_('Target URL'),
+        allow_null=True
     )
     vmware_username = serializers.CharField(
-        max_length=128, allow_blank=True, required=False, label=_('Username')
+        max_length=128, allow_blank=True, required=False, label=_('Username'),
+        allow_null=True
     )
     vmware_password = serializers.CharField(
-        max_length=128, allow_blank=True, required=False, write_only=True, label=_('Password')
+        max_length=128, allow_blank=True, required=False, write_only=True, label=_('Password'),
+        allow_null=True
     )
diff --git a/apps/assets/models/user.py b/apps/assets/models/user.py
index 6491f003f..738c95986 100644
--- a/apps/assets/models/user.py
+++ b/apps/assets/models/user.py
@@ -208,12 +208,11 @@ class SystemUser(BaseUser):
     def get_protocol_by_application_type(cls, app_type):
         from applications.const import ApplicationTypeChoices
         if app_type in ApplicationTypeChoices.remote_app_types():
-            return cls.PROTOCOL_RDP
-        protocol = None
-        other_types = [*ApplicationTypeChoices.db_types(), *ApplicationTypeChoices.cloud_types()]
-        if app_type in other_types and app_type in cls.APPLICATION_CATEGORY_PROTOCOLS:
+            protocol = cls.PROTOCOL_RDP
+        else:
             protocol = app_type
-        return protocol
+        if protocol in cls.APPLICATION_CATEGORY_PROTOCOLS:
+            return protocol
 
     class Meta:
         ordering = ['name']
diff --git a/apps/common/drf/fields.py b/apps/common/drf/fields.py
index 2ee17f19a..9b92af381 100644
--- a/apps/common/drf/fields.py
+++ b/apps/common/drf/fields.py
@@ -1,12 +1,11 @@
 # -*- coding: utf-8 -*-
 #
 
-import copy
 from rest_framework import serializers
 
 
 __all__ = [
-    'ReadableHiddenField', 'CustomMetaDictField',
+    'ReadableHiddenField',
 ]
 
 
@@ -24,87 +23,3 @@ class ReadableHiddenField(serializers.HiddenField):
         if hasattr(value, 'id'):
             return getattr(value, 'id')
         return value
-
-#
-# OtherField
-# ----------
-
-
-# TODO: DELETE 替换完成后删除
-class CustomMetaDictField(serializers.DictField):
-    """
-    In use:
-    RemoteApp params field
-    CommandStorage meta field
-    ReplayStorage meta field
-    """
-    type_fields_map = {}
-    default_type = None
-    convert_key_remove_type_prefix = False
-    convert_key_to_upper = False
-
-    def filter_attribute(self, attribute, instance):
-        fields = self.type_fields_map.get(instance.type, [])
-        for field in fields:
-            if field.get('write_only', False):
-                attribute.pop(field['name'], None)
-        return attribute
-
-    def get_attribute(self, instance):
-        """
-        序列化时调用
-        """
-        attribute = super().get_attribute(instance)
-        attribute = self.filter_attribute(attribute, instance)
-        return attribute
-
-    def convert_value_key_remove_type_prefix(self, dictionary, value):
-        if not self.convert_key_remove_type_prefix:
-            return value
-        tp = dictionary.get('type')
-        prefix = '{}_'.format(tp)
-        convert_value = {}
-        for k, v in value.items():
-            if k.lower().startswith(prefix):
-                k = k.lower().split(prefix, 1)[1]
-            convert_value[k] = v
-        return convert_value
-
-    def convert_value_key_to_upper(self, value):
-        if not self.convert_key_to_upper:
-            return value
-        convert_value = {k.upper(): v for k, v in value.items()}
-        return convert_value
-
-    def convert_value_key(self, dictionary, value):
-        value = self.convert_value_key_remove_type_prefix(dictionary, value)
-        value = self.convert_value_key_to_upper(value)
-        return value
-
-    def filter_value_key(self, dictionary, value):
-        tp = dictionary.get('type')
-        fields = self.type_fields_map.get(tp, [])
-        fields_names = [field['name'] for field in fields]
-        filter_value = {k: v for k, v in value.items() if k in fields_names}
-        return filter_value
-
-    @staticmethod
-    def strip_value(value):
-        new_value = {}
-        for k, v in value.items():
-            if isinstance(v, str):
-                v = v.strip()
-            new_value[k] = v
-        return new_value
-
-    def get_value(self, dictionary):
-        """
-        反序列化时调用
-        """
-        value = super().get_value(dictionary)
-        value = self.convert_value_key(dictionary, value)
-        value = self.filter_value_key(dictionary, value)
-        value = self.strip_value(value)
-        return value
-
-
diff --git a/apps/common/drf/serializers.py b/apps/common/drf/serializers.py
index 1087b46da..4beb59fe7 100644
--- a/apps/common/drf/serializers.py
+++ b/apps/common/drf/serializers.py
@@ -1,3 +1,4 @@
+import copy
 from rest_framework import serializers
 from rest_framework.serializers import Serializer
 from rest_framework.serializers import ModelSerializer
@@ -38,10 +39,10 @@ class MethodSerializer(serializers.Serializer):
     @cached_property
     def serializer(self) -> serializers.Serializer:
         method = getattr(self.parent, self.method_name)
-        return method()
-
-    def get_fields(self):
-        return self.serializer.get_fields()
+        _serializer = method()
+        # 设置serializer的parent值，否则在serializer实例中获取parent会出现断层
+        setattr(_serializer, 'parent', self.parent)
+        return _serializer
 
     @cached_property
     def fields(self):
@@ -50,10 +51,16 @@ class MethodSerializer(serializers.Serializer):
         这样在调用 field.parent 时, 才会达到预期的结果，
         比如: serializers.SerializerMethodField
         """
-        fields = BindingDict(self.serializer)
-        for key, value in self.get_fields().items():
-            fields[key] = value
-        return fields
+        return self.serializer.fields
+
+    def run_validation(self, data=serializers.empty):
+        return self.serializer.run_validation(data)
+
+    def to_representation(self, instance):
+        return self.serializer.to_representation(instance)
+
+    def get_initial(self):
+        return self.serializer.get_initial()
 
 
 # Other Serializer
diff --git a/apps/terminal/api/storage.py b/apps/terminal/api/storage.py
index 9dab8c5d9..be3002060 100644
--- a/apps/terminal/api/storage.py
+++ b/apps/terminal/api/storage.py
@@ -20,10 +20,10 @@ class BaseStorageViewSetMixin:
 
     def destroy(self, request, *args, **kwargs):
         instance = self.get_object()
-        if instance.in_defaults():
+        if instance.type_null_or_server:
             data = {'msg': _('Deleting the default storage is not allowed')}
             return Response(data=data, status=status.HTTP_400_BAD_REQUEST)
-        if instance.is_using():
+        if instance.is_use():
             data = {'msg': _('Cannot delete storage that is being used')}
             return Response(data=data, status=status.HTTP_400_BAD_REQUEST)
         return super().destroy(request, *args, **kwargs)
@@ -67,11 +67,9 @@ class BaseStorageTestConnectiveMixin:
         return Response(data)
 
 
-class CommandStorageTestConnectiveApi(BaseStorageTestConnectiveMixin,
-                                      generics.RetrieveAPIView):
+class CommandStorageTestConnectiveApi(BaseStorageTestConnectiveMixin, generics.RetrieveAPIView):
     queryset = CommandStorage.objects.all()
 
 
-class ReplayStorageTestConnectiveApi(BaseStorageTestConnectiveMixin,
-                                     generics.RetrieveAPIView):
+class ReplayStorageTestConnectiveApi(BaseStorageTestConnectiveMixin, generics.RetrieveAPIView):
     queryset = ReplayStorage.objects.all()
diff --git a/apps/terminal/api/terminal.py b/apps/terminal/api/terminal.py
index 005d40544..14213316c 100644
--- a/apps/terminal/api/terminal.py
+++ b/apps/terminal/api/terminal.py
@@ -148,7 +148,5 @@ class TerminalConfig(APIView):
     permission_classes = (IsAppUser,)
 
     def get(self, request):
-        user = request.user
-        terminal = user.terminal
-        configs = terminal.config
-        return Response(configs, status=200)
\ No newline at end of file
+        config = request.user.terminal.config
+        return Response(config, status=200)
\ No newline at end of file
diff --git a/apps/terminal/apps.py b/apps/terminal/apps.py
index 62b8ff085..5341369c7 100644
--- a/apps/terminal/apps.py
+++ b/apps/terminal/apps.py
@@ -8,4 +8,4 @@ class TerminalConfig(AppConfig):
 
     def ready(self):
         from . import signals_handler
-        return super().ready()
\ No newline at end of file
+        return super().ready()
diff --git a/apps/terminal/backends/__init__.py b/apps/terminal/backends/__init__.py
index 52a33b359..4e08d052e 100644
--- a/apps/terminal/backends/__init__.py
+++ b/apps/terminal/backends/__init__.py
@@ -3,7 +3,6 @@ from django.conf import settings
 from django.utils.functional import LazyObject
 
 from .command.serializers import SessionCommandSerializer
-from ..const import COMMAND_STORAGE_TYPE_SERVER
 
 
 TYPE_ENGINE_MAPPING = {
@@ -30,13 +29,12 @@ def get_terminal_command_storages():
     from ..models import CommandStorage
     storage_list = {}
     for s in CommandStorage.objects.all():
-        tp = s.type
-        if tp == COMMAND_STORAGE_TYPE_SERVER:
+        if s.type_server:
             storage = get_command_storage()
         else:
-            if not TYPE_ENGINE_MAPPING.get(tp):
+            if not TYPE_ENGINE_MAPPING.get(s.type):
                 continue
-            engine_class = import_module(TYPE_ENGINE_MAPPING[tp])
+            engine_class = import_module(TYPE_ENGINE_MAPPING[s.type])
             storage = engine_class.CommandStore(s.config)
         storage_list[s.name] = storage
     return storage_list
diff --git a/apps/terminal/const.py b/apps/terminal/const.py
index b7a48fab3..488726c39 100644
--- a/apps/terminal/const.py
+++ b/apps/terminal/const.py
@@ -1,117 +1,31 @@
 # -*- coding: utf-8 -*-
 #
 
-ASSETS_CACHE_KEY = "terminal__session__assets"
-USERS_CACHE_KEY = "terminal__session__users"
-SYSTEM_USER_CACHE_KEY = "terminal__session__system_users"
-
-
-# Replay Storage
-
-REPLAY_STORAGE_TYPE_NULL = 'null'
-REPLAY_STORAGE_TYPE_SERVER = 'server'
-REPLAY_STORAGE_TYPE_S3 = 's3'
-REPLAY_STORAGE_TYPE_CEPH = 'ceph'
-REPLAY_STORAGE_TYPE_SWIFT = 'swift'
-REPLAY_STORAGE_TYPE_OSS = 'oss'
-REPLAY_STORAGE_TYPE_AZURE = 'azure'
-
-REPLAY_STORAGE_TYPE_EMPTY_FIELDS = []
-REPLAY_STORAGE_TYPE_S3_FIELDS = [
-    {'name': 'BUCKET'},
-    {'name': 'ACCESS_KEY', 'write_only': True},
-    {'name': 'SECRET_KEY', 'write_only': True},
-    {'name': 'ENDPOINT'}
-]
-REPLAY_STORAGE_TYPE_CEPH_FIELDS = [
-    {'name': 'BUCKET'},
-    {'name': 'ACCESS_KEY', 'write_only': True},
-    {'name': 'SECRET_KEY', 'write_only': True},
-    {'name': 'ENDPOINT'}
-]
-REPLAY_STORAGE_TYPE_SWIFT_FIELDS = [
-    {'name': 'BUCKET'},
-    {'name': 'ACCESS_KEY', 'write_only': True},
-    {'name': 'SECRET_KEY', 'write_only': True},
-    {'name': 'REGION'},
-    {'name': 'ENDPOINT'},
-    {'name': 'PROTOCOL'},
-]
-REPLAY_STORAGE_TYPE_OSS_FIELDS = [
-    {'name': 'BUCKET'},
-    {'name': 'ACCESS_KEY', 'write_only': True},
-    {'name': 'SECRET_KEY', 'write_only': True},
-    {'name': 'ENDPOINT'}
-]
-REPLAY_STORAGE_TYPE_AZURE_FIELDS = [
-    {'name': 'CONTAINER_NAME'},
-    {'name': 'ACCOUNT_NAME'},
-    {'name': 'ACCOUNT_KEY', 'write_only': True},
-    {'name': 'ENDPOINT_SUFFIX'}
-]
-
-REPLAY_STORAGE_TYPE_FIELDS_MAP = {
-    REPLAY_STORAGE_TYPE_NULL: REPLAY_STORAGE_TYPE_EMPTY_FIELDS,
-    REPLAY_STORAGE_TYPE_SERVER: REPLAY_STORAGE_TYPE_EMPTY_FIELDS,
-    REPLAY_STORAGE_TYPE_S3: REPLAY_STORAGE_TYPE_S3_FIELDS,
-    REPLAY_STORAGE_TYPE_CEPH: REPLAY_STORAGE_TYPE_CEPH_FIELDS,
-    REPLAY_STORAGE_TYPE_SWIFT: REPLAY_STORAGE_TYPE_SWIFT_FIELDS,
-    REPLAY_STORAGE_TYPE_OSS: REPLAY_STORAGE_TYPE_OSS_FIELDS,
-    REPLAY_STORAGE_TYPE_AZURE: REPLAY_STORAGE_TYPE_AZURE_FIELDS
-}
-
-REPLAY_STORAGE_TYPE_CHOICES_DEFAULT = [
-    (REPLAY_STORAGE_TYPE_NULL, 'Null'),
-    (REPLAY_STORAGE_TYPE_SERVER, 'Server'),
-]
-
-REPLAY_STORAGE_TYPE_CHOICES_EXTENDS = [
-    (REPLAY_STORAGE_TYPE_S3, 'S3'),
-    (REPLAY_STORAGE_TYPE_CEPH, 'Ceph'),
-    (REPLAY_STORAGE_TYPE_SWIFT, 'Swift'),
-    (REPLAY_STORAGE_TYPE_OSS, 'OSS'),
-    (REPLAY_STORAGE_TYPE_AZURE, 'Azure')
-]
-
-REPLAY_STORAGE_TYPE_CHOICES = REPLAY_STORAGE_TYPE_CHOICES_DEFAULT + \
-                              REPLAY_STORAGE_TYPE_CHOICES_EXTENDS
-
-
-# Command Storage
-
-COMMAND_STORAGE_TYPE_NULL = 'null'
-COMMAND_STORAGE_TYPE_SERVER = 'server'
-COMMAND_STORAGE_TYPE_ES = 'es'
-
-COMMAND_STORAGE_TYPE_EMPTY_FIELDS = []
-COMMAND_STORAGE_TYPE_ES_FIELDS = [
-    {'name': 'HOSTS'},
-    {'name': 'INDEX'},
-    {'name': 'DOC_TYPE'}
-]
-
-COMMAND_STORAGE_TYPE_FIELDS_MAP = {
-    COMMAND_STORAGE_TYPE_NULL: COMMAND_STORAGE_TYPE_EMPTY_FIELDS,
-    COMMAND_STORAGE_TYPE_SERVER: COMMAND_STORAGE_TYPE_EMPTY_FIELDS,
-    COMMAND_STORAGE_TYPE_ES: COMMAND_STORAGE_TYPE_ES_FIELDS,
-}
-
-COMMAND_STORAGE_TYPE_CHOICES_DEFAULT = [
-    (COMMAND_STORAGE_TYPE_NULL, 'Null'),
-    (COMMAND_STORAGE_TYPE_SERVER, 'Server'),
-]
-
-COMMAND_STORAGE_TYPE_CHOICES_EXTENDS = [
-    (COMMAND_STORAGE_TYPE_ES, 'Elasticsearch')
-]
-
-COMMAND_STORAGE_TYPE_CHOICES = COMMAND_STORAGE_TYPE_CHOICES_DEFAULT + \
-                               COMMAND_STORAGE_TYPE_CHOICES_EXTENDS
-
-
 from django.db.models import TextChoices
 from django.utils.translation import ugettext_lazy as _
 
+# Replay & Command Storage Choices
+# --------------------------------
+
+
+class ReplayStorageTypeChoices(TextChoices):
+    null = 'null', 'Null',
+    server = 'server', 'Server'
+    s3 = 's3', 'S3'
+    ceph = 'ceph', 'Ceph'
+    swift = 'swift', 'Swift'
+    oss = 'oss', 'OSS'
+    azure = 'azure', 'Azure'
+
+
+class CommandStorageTypeChoices(TextChoices):
+    null = 'null', 'Null',
+    server = 'server', 'Server'
+    es = 'es', 'Elasticsearch'
+
+
+# Component Status Choices
+# ------------------------
 
 class ComponentStatusChoices(TextChoices):
     critical = 'critical', _('Critical')
diff --git a/apps/terminal/models/storage.py b/apps/terminal/models/storage.py
index 66fbe393d..e3b7113c2 100644
--- a/apps/terminal/models/storage.py
+++ b/apps/terminal/models/storage.py
@@ -2,102 +2,113 @@ from __future__ import unicode_literals
 
 import os
 import jms_storage
-
 from django.db import models
 from django.utils.translation import ugettext_lazy as _
 from django.conf import settings
-
 from common.mixins import CommonModelMixin
 from common.fields.model import EncryptJsonDictTextField
-from .. import const
 from .terminal import Terminal
+from .. import const
 
 
 class CommandStorage(CommonModelMixin):
-    TYPE_CHOICES = const.COMMAND_STORAGE_TYPE_CHOICES
-    TYPE_DEFAULTS = dict(const.REPLAY_STORAGE_TYPE_CHOICES_DEFAULT).keys()
-    TYPE_SERVER = const.COMMAND_STORAGE_TYPE_SERVER
-
     name = models.CharField(max_length=128, verbose_name=_("Name"), unique=True)
     type = models.CharField(
-        max_length=16, choices=TYPE_CHOICES, verbose_name=_('Type'),
-        default=TYPE_SERVER
+        max_length=16, choices=const.CommandStorageTypeChoices.choices,
+        default=const.CommandStorageTypeChoices.server.value, verbose_name=_('Type'),
     )
     meta = EncryptJsonDictTextField(default={})
-    comment = models.TextField(
-        max_length=128, default='', blank=True, verbose_name=_('Comment')
-    )
+    comment = models.TextField(max_length=128, default='', blank=True, verbose_name=_('Comment'))
 
     def __str__(self):
         return self.name
 
+    @property
+    def type_null(self):
+        return self.type == const.CommandStorageTypeChoices.null.value
+
+    @property
+    def type_server(self):
+        return self.type == const.CommandStorageTypeChoices.server.value
+
+    @property
+    def type_null_or_server(self):
+        return self.type_null or self.type_server
+
     @property
     def config(self):
         config = self.meta
         config.update({'TYPE': self.type})
         return config
 
-    def in_defaults(self):
-        return self.type in self.TYPE_DEFAULTS
-
     def is_valid(self):
-        if self.in_defaults():
+        if self.type_null_or_server:
             return True
         storage = jms_storage.get_log_storage(self.config)
         return storage.ping()
 
-    def is_using(self):
+    def is_use(self):
         return Terminal.objects.filter(command_storage=self.name).exists()
 
 
 class ReplayStorage(CommonModelMixin):
-    TYPE_CHOICES = const.REPLAY_STORAGE_TYPE_CHOICES
-    TYPE_SERVER = const.REPLAY_STORAGE_TYPE_SERVER
-    TYPE_DEFAULTS = dict(const.REPLAY_STORAGE_TYPE_CHOICES_DEFAULT).keys()
-
     name = models.CharField(max_length=128, verbose_name=_("Name"), unique=True)
     type = models.CharField(
-        max_length=16, choices=TYPE_CHOICES, verbose_name=_('Type'),
-        default=TYPE_SERVER
+        max_length=16, choices=const.ReplayStorageTypeChoices.choices,
+        default=const.ReplayStorageTypeChoices.server.value, verbose_name=_('Type')
     )
     meta = EncryptJsonDictTextField(default={})
-    comment = models.TextField(
-        max_length=128, default='', blank=True, verbose_name=_('Comment')
-    )
+    comment = models.TextField(max_length=128, default='', blank=True, verbose_name=_('Comment'))
 
     def __str__(self):
         return self.name
 
-    def convert_type(self):
-        s3_type_list = [const.REPLAY_STORAGE_TYPE_CEPH]
-        tp = self.type
-        if tp in s3_type_list:
-            tp = const.REPLAY_STORAGE_TYPE_S3
-        return tp
+    @property
+    def type_null(self):
+        return self.type == const.ReplayStorageTypeChoices.null.value
 
-    def get_extra_config(self):
-        extra_config = {'TYPE': self.convert_type()}
-        if self.type == const.REPLAY_STORAGE_TYPE_SWIFT:
-            extra_config.update({'signer': 'S3SignerType'})
-        return extra_config
+    @property
+    def type_server(self):
+        return self.type == const.ReplayStorageTypeChoices.server.value
+
+    @property
+    def type_null_or_server(self):
+        return self.type_null or self.type_server
+
+    @property
+    def type_swift(self):
+        return self.type == const.ReplayStorageTypeChoices.swift.value
+
+    @property
+    def type_ceph(self):
+        return self.type == const.ReplayStorageTypeChoices.ceph.value
 
     @property
     def config(self):
-        config = self.meta
-        extra_config = self.get_extra_config()
-        config.update(extra_config)
-        return config
+        _config = {}
 
-    def in_defaults(self):
-        return self.type in self.TYPE_DEFAULTS
+        # add type config
+        if self.type_ceph:
+            _type = const.ReplayStorageTypeChoices.s3.value
+        else:
+            _type = self.type
+        _config.update({'TYPE': _type})
+
+        # add special config
+        if self.type_swift:
+            _config.update({'signer': 'S3SignerType'})
+
+        # add meta config
+        _config.update(self.meta)
+        return _config
 
     def is_valid(self):
-        if self.in_defaults():
+        if self.type_null_or_server:
             return True
         storage = jms_storage.get_object_storage(self.config)
         target = 'tests.py'
         src = os.path.join(settings.BASE_DIR, 'common', target)
         return storage.is_valid(src, target)
 
-    def is_using(self):
+    def is_use(self):
         return Terminal.objects.filter(replay_storage=self.name).exists()
diff --git a/apps/terminal/serializers/storage.py b/apps/terminal/serializers/storage.py
index 0e7db21a2..35606d40f 100644
--- a/apps/terminal/serializers/storage.py
+++ b/apps/terminal/serializers/storage.py
@@ -2,74 +2,197 @@
 #
 import copy
 from rest_framework import serializers
-
-from common.drf.fields import CustomMetaDictField
+from urllib.parse import urlparse
+from django.utils.translation import ugettext_lazy as _
+from django.db.models import TextChoices
+from common.drf.serializers import MethodSerializer
 from ..models import ReplayStorage, CommandStorage
 from .. import const
 
 
-class ReplayStorageMetaDictField(CustomMetaDictField):
-    type_fields_map = const.REPLAY_STORAGE_TYPE_FIELDS_MAP
-    default_type = const.REPLAY_STORAGE_TYPE_SERVER
-    convert_key_remove_type_prefix = True
-    convert_key_to_upper = True
+# Replay storage serializers
+# --------------------------
 
 
-class BaseStorageSerializerMixin:
-    type_fields_map = None
-
-    def process_meta(self, instance, validated_data):
-        new_meta = copy.deepcopy(validated_data.get('meta', {}))
-        tp = validated_data.get('type', '')
-
-        if tp != instance.type:
-            return new_meta
-
-        old_meta = instance.meta
-        fields = self.type_fields_map.get(instance.type, [])
-        for field in fields:
-            if not field.get('write_only', False):
-                continue
-            field_name = field['name']
-            new_value = new_meta.get(field_name, '')
-            old_value = old_meta.get(field_name, '')
-            field_value = new_value if new_value else old_value
-            new_meta[field_name] = field_value
-
-        return new_meta
-
-    def update(self, instance, validated_data):
-        meta = self.process_meta(instance, validated_data)
-        validated_data['meta'] = meta
-        return super().update(instance, validated_data)
+class ReplayStorageTypeBaseSerializer(serializers.Serializer):
+    BUCKET = serializers.CharField(
+        required=True, max_length=1024, label=_('Bucket'), allow_null=True
+    )
+    ACCESS_KEY = serializers.CharField(
+        max_length=1024, required=False, allow_blank=True, write_only=True, label=_('Access key'),
+        allow_null=True,
+    )
+    SECRET_KEY = serializers.CharField(
+        max_length=1024, required=False, allow_blank=True, write_only=True, label=_('Secret key'),
+        allow_null=True,
+    )
+    ENDPOINT = serializers.CharField(
+        required=True, max_length=1024, label=_('Endpoint'), allow_null=True,
+    )
 
 
-class ReplayStorageSerializer(BaseStorageSerializerMixin,
-                              serializers.ModelSerializer):
+class ReplayStorageTypeS3Serializer(ReplayStorageTypeBaseSerializer):
+    endpoint_help_text = '''
+        S3 format: http://s3.{REGION_NAME}.amazonaws.com
+        S3(China) format: http://s3.{REGION_NAME}.amazonaws.com.cn
+        Such as: http://s3.cn-north-1.amazonaws.com.cn
+    '''
+    ENDPOINT = serializers.CharField(
+        required=True, max_length=1024, label=_('Endpoint'), help_text=_(endpoint_help_text),
+        allow_null=True,
+    )
 
-    meta = ReplayStorageMetaDictField()
 
-    type_fields_map = const.REPLAY_STORAGE_TYPE_FIELDS_MAP
+class ReplayStorageTypeCephSerializer(ReplayStorageTypeBaseSerializer):
+    pass
+
+
+class ReplayStorageTypeSwiftSerializer(ReplayStorageTypeBaseSerializer):
+    class ProtocolChoices(TextChoices):
+        http = 'http', 'http'
+        https = 'https', 'https'
+
+    REGION = serializers.CharField(
+        required=True, max_length=1024, label=_('Region'), allow_null=True
+    )
+    PROTOCOL = serializers.ChoiceField(
+        choices=ProtocolChoices.choices, default=ProtocolChoices.http.value, label=_('Protocol'),
+        allow_null=True,
+    )
+
+
+class ReplayStorageTypeOSSSerializer(ReplayStorageTypeBaseSerializer):
+    endpoint_help_text = '''
+        OSS format: http://{REGION_NAME}.aliyuncs.com
+        Such as: http://oss-cn-hangzhou.aliyuncs.com
+    '''
+    ENDPOINT = serializers.CharField(
+        max_length=1024, label=_('Endpoint'), help_text=_(endpoint_help_text), allow_null=True,
+    )
+
+
+class ReplayStorageTypeAzureSerializer(serializers.Serializer):
+    class EndpointSuffixChoices(TextChoices):
+        china = 'core.chinacloudapi.cn', 'core.chinacloudapi.cn'
+        international = 'core.windows.net', 'core.windows.net'
+
+    CONTAINER_NAME = serializers.CharField(max_length=1024, label=_('Container'), allow_null=True)
+    ACCOUNT_NAME = serializers.CharField(max_length=1024, label=_('Account name'), allow_null=True)
+    ACCOUNT_KEY = serializers.CharField(max_length=1024, label=_('Account key'), allow_null=True)
+    ENDPOINT_SUFFIX = serializers.ChoiceField(
+        choices=EndpointSuffixChoices.choices, default=EndpointSuffixChoices.china.value,
+        label=_('Endpoint suffix'), allow_null=True,
+    )
+
+# mapping
+
+
+replay_storage_type_serializer_classes_mapping = {
+    const.ReplayStorageTypeChoices.s3.value: ReplayStorageTypeS3Serializer,
+    const.ReplayStorageTypeChoices.ceph.value: ReplayStorageTypeCephSerializer,
+    const.ReplayStorageTypeChoices.swift.value: ReplayStorageTypeSwiftSerializer,
+    const.ReplayStorageTypeChoices.oss.value: ReplayStorageTypeOSSSerializer,
+    const.ReplayStorageTypeChoices.azure.value: ReplayStorageTypeAzureSerializer
+}
+
+# ReplayStorageSerializer
+
+
+class ReplayStorageSerializer(serializers.ModelSerializer):
+    meta = MethodSerializer()
 
     class Meta:
         model = ReplayStorage
         fields = ['id', 'name', 'type', 'meta', 'comment']
 
+    def validate_meta(self, meta):
+        _meta = self.instance.meta if self.instance else {}
+        _meta.update(meta)
+        return _meta
 
-class CommandStorageMetaDictField(CustomMetaDictField):
-    type_fields_map = const.COMMAND_STORAGE_TYPE_FIELDS_MAP
-    default_type = const.COMMAND_STORAGE_TYPE_SERVER
-    convert_key_remove_type_prefix = True
-    convert_key_to_upper = True
+    def get_meta_serializer(self):
+        serializer_class = None
+        query_type = self.context['request'].query_params.get('type')
+        if query_type:
+            serializer_class = replay_storage_type_serializer_classes_mapping.get(query_type)
+        if isinstance(self.instance, ReplayStorage):
+            instance_type = self.instance.type
+            serializer_class = replay_storage_type_serializer_classes_mapping.get(instance_type)
+        if serializer_class is None:
+            serializer_class = serializers.Serializer
+        serializer = serializer_class()
+        return serializer
 
 
-class CommandStorageSerializer(BaseStorageSerializerMixin,
-                               serializers.ModelSerializer):
+# Command storage serializers
+# ---------------------------
 
-    meta = CommandStorageMetaDictField()
 
-    type_fields_map = const.COMMAND_STORAGE_TYPE_FIELDS_MAP
+def es_host_format_validator(host):
+    h = urlparse(host)
+    default_error_msg = _('The address format is incorrect')
+    if h.scheme not in ['http', 'https']:
+        raise serializers.ValidationError(default_error_msg)
+    if ':' not in h.netloc:
+        raise serializers.ValidationError(default_error_msg)
+    _host, _port = h.netloc.split(':')
+    if not _host:
+        error_msg = _('Host invalid')
+        raise serializers.ValidationError(error_msg)
+    if not _port.isdigit():
+        error_msg = _('Port invalid')
+        raise serializers.ValidationError(error_msg)
+    return host
+
+
+class CommandStorageTypeESSerializer(serializers.Serializer):
+
+    hosts_help_text = '''
+        Tip: If there are multiple hosts, use a comma (,) to separate them. 
+        (eg: http://www.jumpserver.a.com, http://www.jumpserver.b.com)
+    '''
+    HOSTS = serializers.ListField(
+        child=serializers.CharField(validators=[es_host_format_validator]), label=_('Hosts'),
+        help_text=_(hosts_help_text), allow_null=True
+    )
+    INDEX = serializers.CharField(
+        max_length=1024, default='jumpserver', label=_('Index'), allow_null=True
+    )
+    DOC_TYPE = serializers.CharField(
+        max_length=1024, read_only=True, default='command', label=_('Doc type'), allow_null=True
+    )
+
+# mapping
+
+
+command_storage_type_serializer_classes_mapping = {
+    const.CommandStorageTypeChoices.es.value: CommandStorageTypeESSerializer
+}
+
+# CommandStorageSerializer
+
+
+class CommandStorageSerializer(serializers.ModelSerializer):
+    meta = MethodSerializer()
 
     class Meta:
         model = CommandStorage
         fields = ['id', 'name', 'type', 'meta', 'comment']
+
+    def validate_meta(self, meta):
+        _meta = self.instance.meta if self.instance else {}
+        _meta.update(meta)
+        return _meta
+
+    def get_meta_serializer(self):
+        serializer_class = None
+        query_type = self.context['request'].query_params.get('type')
+        if query_type:
+            serializer_class = command_storage_type_serializer_classes_mapping.get(query_type)
+        if isinstance(self.instance, CommandStorage):
+            instance_type = self.instance.type
+            serializer_class = command_storage_type_serializer_classes_mapping.get(instance_type)
+        if serializer_class is None:
+            serializer_class = serializers.Serializer
+        serializer = serializer_class()
+        return serializer
diff --git a/apps/terminal/tasks.py b/apps/terminal/tasks.py
index 7efa7665d..b743f10f9 100644
--- a/apps/terminal/tasks.py
+++ b/apps/terminal/tasks.py
@@ -73,7 +73,6 @@ def clean_expired_session_period():
     logger.info("Clean session replay done")
 
 
-
 @shared_task
 def upload_session_replay_to_external_storage(session_id):
     logger.info(f'Start upload session to external storage: {session_id}')
diff --git a/apps/terminal/utils.py b/apps/terminal/utils.py
index 4f346868d..d2e5b8e91 100644
--- a/apps/terminal/utils.py
+++ b/apps/terminal/utils.py
@@ -39,7 +39,7 @@ def download_session_replay(session):
     configs = {
         storage.name: storage.config
         for storage in replay_storages
-        if not storage.in_defaults()
+        if not storage.type_null_or_server
     }
     if settings.SERVER_REPLAY_STORAGE:
         configs['SERVER_REPLAY_STORAGE'] = settings.SERVER_REPLAY_STORAGE
diff --git a/apps/tickets/api/ticket.py b/apps/tickets/api/ticket.py
index 3d68387da..775baccba 100644
--- a/apps/tickets/api/ticket.py
+++ b/apps/tickets/api/ticket.py
@@ -19,7 +19,7 @@ __all__ = ['TicketViewSet']
 
 class TicketViewSet(CommonApiMixin, viewsets.ModelViewSet):
     permission_classes = (IsValidUser,)
-    serializer_class = serializers.TicketSerializer
+    serializer_class = serializers.TicketDisplaySerializer
     serializer_classes = {
         'default': serializers.TicketDisplaySerializer,
         'display': serializers.TicketDisplaySerializer,
diff --git a/apps/tickets/models/ticket/mixin/meta/apply_application.py b/apps/tickets/models/ticket/mixin/meta/apply_application.py
index 35fefb024..000cd7338 100644
--- a/apps/tickets/models/ticket/mixin/meta/apply_application.py
+++ b/apps/tickets/models/ticket/mixin/meta/apply_application.py
@@ -10,9 +10,9 @@ from tickets.utils import convert_model_instance_data_field_name_to_verbose_name
 class ConstructDisplayFieldMixin:
     def construct_meta_apply_application_open_fields_display(self):
         meta_display_fields = ['apply_category_display', 'apply_type_display']
-        apply_category = self.meta['apply_category']
+        apply_category = self.meta.get('apply_category')
         apply_category_display = ApplicationCategoryChoices.get_label(apply_category)
-        apply_type = self.meta['apply_type']
+        apply_type = self.meta.get('apply_type')
         apply_type_display = ApplicationTypeChoices.get_label(apply_type)
         meta_display_values = [apply_category_display, apply_type_display]
         meta_display = dict(zip(meta_display_fields, meta_display_values))
@@ -20,8 +20,8 @@ class ConstructDisplayFieldMixin:
 
     def construct_meta_apply_application_approve_fields_display(self):
         meta_display_fields = ['approve_applications_snapshot', 'approve_system_users_snapshot']
-        approve_applications_id = self.meta['approve_applications']
-        approve_system_users_id = self.meta['approve_system_users']
+        approve_applications_id = self.meta.get('approve_applications', [])
+        approve_system_users_id = self.meta.get('approve_system_users', [])
         with tmp_to_org(self.org_id):
             approve_applications_snapshot = list(
                 Application.objects.filter(id__in=approve_applications_id).values(
@@ -42,12 +42,12 @@ class ConstructDisplayFieldMixin:
 class ConstructBodyMixin:
 
     def construct_apply_application_applied_body(self):
-        apply_category_display = self.meta['apply_category_display']
-        apply_type_display = self.meta['apply_type_display']
-        apply_application_group = self.meta['apply_application_group']
-        apply_system_user_group = self.meta['apply_system_user_group']
-        apply_date_start = self.meta['apply_date_start']
-        apply_date_expired = self.meta['apply_date_expired']
+        apply_category_display = self.meta.get('apply_category_display')
+        apply_type_display = self.meta.get('apply_type_display')
+        apply_application_group = self.meta.get('apply_application_group', [])
+        apply_system_user_group = self.meta.get('apply_system_user_group', [])
+        apply_date_start = self.meta.get('apply_date_start')
+        apply_date_expired = self.meta.get('apply_date_expired')
         applied_body = '''{}: {},
             {}: {},
             {}: {},
@@ -66,16 +66,16 @@ class ConstructBodyMixin:
 
     def construct_apply_application_approved_body(self):
         # 审批信息
-        approve_applications_snapshot = self.meta['approve_applications_snapshot']
+        approve_applications_snapshot = self.meta.get('approve_applications_snapshot', [])
         approve_applications_snapshot_display = convert_model_instance_data_field_name_to_verbose_name(
             Application, approve_applications_snapshot
         )
-        approve_system_users_snapshot = self.meta['approve_system_users_snapshot']
+        approve_system_users_snapshot = self.meta.get('approve_system_users_snapshot', [])
         approve_system_users_snapshot_display = convert_model_instance_data_field_name_to_verbose_name(
             SystemUser, approve_system_users_snapshot
         )
-        approve_date_start = self.meta['approve_date_start']
-        approve_date_expired = self.meta['approve_date_expired']
+        approve_date_start = self.meta.get('approve_date_start')
+        approve_date_expired = self.meta.get('approve_date_expired')
         approved_body = '''{}: {},
             {}: {},
             {}: {},
@@ -97,12 +97,12 @@ class CreatePermissionMixin:
             if application_permission:
                 return application_permission
 
-        apply_category = self.meta['apply_category']
-        apply_type = self.meta['apply_type']
-        approved_applications_id = self.meta['approve_applications']
-        approve_system_users_id = self.meta['approve_system_users']
-        approve_date_start = self.meta['approve_date_start']
-        approve_date_expired = self.meta['approve_date_expired']
+        apply_category = self.meta.get('apply_category')
+        apply_type = self.meta.get('apply_type')
+        approved_applications_id = self.meta.get('approve_applications', [])
+        approve_system_users_id = self.meta.get('approve_system_users', [])
+        approve_date_start = self.meta.get('approve_date_start')
+        approve_date_expired = self.meta.get('approve_date_expired')
         permission_name = '{}({})'.format(
             __('Created by ticket ({})'.format(self.title)), str(self.id)[:4]
         )
diff --git a/apps/tickets/models/ticket/mixin/meta/apply_asset.py b/apps/tickets/models/ticket/mixin/meta/apply_asset.py
index 15a8a2b90..eeae032e9 100644
--- a/apps/tickets/models/ticket/mixin/meta/apply_asset.py
+++ b/apps/tickets/models/ticket/mixin/meta/apply_asset.py
@@ -10,7 +10,7 @@ class ConstructDisplayFieldMixin:
     def construct_meta_apply_asset_open_fields_display(self):
         meta_display_fields = ['apply_actions_display']
 
-        apply_actions = self.meta['apply_actions']
+        apply_actions = self.meta.get('apply_actions', Action.NONE)
         apply_actions_display = Action.value_to_choices_display(apply_actions)
 
         meta_display_values = [apply_actions_display]
@@ -21,10 +21,10 @@ class ConstructDisplayFieldMixin:
         meta_display_fields = [
             'approve_actions_display', 'approve_assets_snapshot', 'approve_system_users_snapshot'
         ]
-        approve_actions = self.meta['approve_actions']
-        approve_assets_id = self.meta['approve_assets']
-        approve_system_users_id = self.meta['approve_system_users']
+        approve_actions = self.meta.get('approve_actions', Action.NONE)
         approve_actions_display = Action.value_to_choices_display(approve_actions)
+        approve_assets_id = self.meta.get('approve_assets', [])
+        approve_system_users_id = self.meta.get('approve_system_users', [])
         with tmp_to_org(self.org_id):
             approve_assets_snapshot = list(
                 Asset.objects.filter(id__in=approve_assets_id).values(
@@ -46,12 +46,12 @@ class ConstructDisplayFieldMixin:
 
 class ConstructBodyMixin:
     def construct_apply_asset_applied_body(self):
-        apply_ip_group = self.meta['apply_ip_group']
-        apply_hostname_group = self.meta['apply_hostname_group']
-        apply_system_user_group = self.meta['apply_system_user_group']
-        apply_actions_display = self.meta['apply_actions_display']
-        apply_date_start = self.meta['apply_date_start']
-        apply_date_expired = self.meta['apply_date_expired']
+        apply_ip_group = self.meta.get('apply_ip_group', [])
+        apply_hostname_group = self.meta.get('apply_hostname_group', [])
+        apply_system_user_group = self.meta.get('apply_system_user_group', [])
+        apply_actions_display = self.meta.get('apply_actions_display', [])
+        apply_date_start = self.meta.get('apply_date_start')
+        apply_date_expired = self.meta.get('apply_date_expired')
         applied_body = '''{}: {},
             {}: {},
             {}: {},
@@ -68,17 +68,17 @@ class ConstructBodyMixin:
         return applied_body
 
     def construct_apply_asset_approved_body(self):
-        approve_assets_snapshot = self.meta['approve_assets_snapshot']
+        approve_assets_snapshot = self.meta.get('approve_assets_snapshot', [])
         approve_assets_snapshot_display = convert_model_instance_data_field_name_to_verbose_name(
             Asset, approve_assets_snapshot
         )
-        approve_system_users_snapshot = self.meta['approve_system_users_snapshot']
+        approve_system_users_snapshot = self.meta.get('approve_system_users_snapshot', [])
         approve_system_users_snapshot_display = convert_model_instance_data_field_name_to_verbose_name(
             SystemUser, approve_system_users_snapshot
         )
-        approve_actions_display = self.meta['approve_actions_display']
-        approve_date_start = self.meta['approve_date_start']
-        approve_date_expired = self.meta['approve_date_expired']
+        approve_actions_display = self.meta.get('approve_actions_display', [])
+        approve_date_start = self.meta.get('approve_date_start')
+        approve_date_expired = self.meta.get('approve_date_expired')
         approved_body = '''{}: {},
             {}: {},
             {}: {},
@@ -101,11 +101,11 @@ class CreatePermissionMixin:
             if asset_permission:
                 return asset_permission
 
-        approve_assets_id = self.meta['approve_assets']
-        approve_system_users_id = self.meta['approve_system_users']
-        approve_actions = self.meta['approve_actions']
-        approve_date_start = self.meta['approve_date_start']
-        approve_date_expired = self.meta['approve_date_expired']
+        approve_assets_id = self.meta.get('approve_assets', [])
+        approve_system_users_id = self.meta.get('approve_system_users', [])
+        approve_actions = self.meta.get('approve_actions', Action.NONE)
+        approve_date_start = self.meta.get('approve_date_start')
+        approve_date_expired = self.meta.get('approve_date_expired')
         permission_name = '{}({})'.format(
             __('Created by ticket ({})'.format(self.title)), str(self.id)[:4]
         )
diff --git a/apps/tickets/models/ticket/mixin/meta/login_confirm.py b/apps/tickets/models/ticket/mixin/meta/login_confirm.py
index 92ac57194..681739d26 100644
--- a/apps/tickets/models/ticket/mixin/meta/login_confirm.py
+++ b/apps/tickets/models/ticket/mixin/meta/login_confirm.py
@@ -4,9 +4,9 @@ from django.utils.translation import ugettext as __
 class ConstructBodyMixin:
     
     def construct_login_confirm_applied_body(self):
-        apply_login_ip = self.meta['apply_login_ip']
-        apply_login_city = self.meta['apply_login_city']
-        apply_login_datetime = self.meta['apply_login_datetime']
+        apply_login_ip = self.meta.get('apply_login_ip')
+        apply_login_city = self.meta.get('apply_login_city')
+        apply_login_datetime = self.meta.get('apply_login_datetime')
         applied_body = '''{}: {},
             {}: {},
             {}: {}
diff --git a/apps/tickets/serializers/ticket/meta/meta.py b/apps/tickets/serializers/ticket/meta/meta.py
index 63a25207d..1b3c071a8 100644
--- a/apps/tickets/serializers/ticket/meta/meta.py
+++ b/apps/tickets/serializers/ticket/meta/meta.py
@@ -17,14 +17,17 @@ action_approve = const.TicketActionChoices.approve.value
 
 type_serializer_classes_mapping = {
     const.TicketTypeChoices.apply_asset.value: {
+        'default': apply_asset.ApplyAssetSerializer,
         action_open: apply_asset.ApplySerializer,
         action_approve: apply_asset.ApproveSerializer,
     },
     const.TicketTypeChoices.apply_application.value: {
+        'default': apply_application.ApplyApplicationSerializer,
         action_open: apply_application.ApplySerializer,
         action_approve: apply_application.ApproveSerializer,
     },
     const.TicketTypeChoices.login_confirm.value: {
+        'default': login_confirm.LoginConfirmSerializer,
         action_open: login_confirm.ApplySerializer,
     }
 }
diff --git a/apps/tickets/serializers/ticket/meta/ticket_type/apply_application.py b/apps/tickets/serializers/ticket/meta/ticket_type/apply_application.py
index f9b516970..50cd05a8f 100644
--- a/apps/tickets/serializers/ticket/meta/ticket_type/apply_application.py
+++ b/apps/tickets/serializers/ticket/meta/ticket_type/apply_application.py
@@ -1,88 +1,148 @@
 from rest_framework import serializers
 from django.utils.translation import ugettext_lazy as _
-
+from django.db.models import Q
 from applications.models import Application
 from applications.const import ApplicationCategoryChoices, ApplicationTypeChoices
 from assets.models import SystemUser
-from .mixin import BaseApproveSerializerMixin
+from orgs.utils import tmp_to_org
+from tickets.models import Ticket
 
 __all__ = [
-    'ApplyApplicationTypeSerializer', 'ApplySerializer', 'ApproveSerializer',
+    'ApplyApplicationSerializer', 'ApplySerializer', 'ApproveSerializer',
 ]
 
 
 class ApplySerializer(serializers.Serializer):
     # 申请信息
     apply_category = serializers.ChoiceField(
-        required=True, choices=ApplicationCategoryChoices.choices, label=_('Category')
+        required=True, choices=ApplicationCategoryChoices.choices, label=_('Category'),
+        allow_null=True,
     )
     apply_category_display = serializers.CharField(
-        read_only=True, label=_('Category display')
+        read_only=True, label=_('Category display'), allow_null=True,
     )
     apply_type = serializers.ChoiceField(
-        required=True, choices=ApplicationTypeChoices.choices, label=_('Type')
+        required=True, choices=ApplicationTypeChoices.choices, label=_('Type'),
+        allow_null=True
     )
     apply_type_display = serializers.CharField(
-        required=False, read_only=True, label=_('Type display')
+        required=False, read_only=True, label=_('Type display'),
+        allow_null=True
     )
     apply_application_group = serializers.ListField(
         required=False, child=serializers.CharField(), label=_('Application group'),
-        default=list,
+        default=list, allow_null=True
     )
     apply_system_user_group = serializers.ListField(
         required=False, child=serializers.CharField(), label=_('System user group'),
-        default=list,
+        default=list, allow_null=True
     )
     apply_date_start = serializers.DateTimeField(
-        required=True, label=_('Date start')
+        required=True, label=_('Date start'), allow_null=True
     )
     apply_date_expired = serializers.DateTimeField(
-        required=True, label=_('Date expired')
+        required=True, label=_('Date expired'), allow_null=True
     )
 
 
-class ApproveSerializer(BaseApproveSerializerMixin, serializers.Serializer):
+class ApproveSerializer(serializers.Serializer):
     # 审批信息
     approve_applications = serializers.ListField(
-        required=True, child=serializers.UUIDField(), label=_('Approve applications')
+        required=True, child=serializers.UUIDField(), label=_('Approve applications'),
+        allow_null=True
     )
     approve_applications_snapshot = serializers.ListField(
         required=False, read_only=True, child=serializers.CharField(),
-        label=_('Approve applications display'),
+        label=_('Approve applications display'), allow_null=True,
         default=list
     )
     approve_system_users = serializers.ListField(
-        required=True, child=serializers.UUIDField(), label=_('Approve system users')
+        required=True, child=serializers.UUIDField(), label=_('Approve system users'),
+        allow_null=True
     )
     approve_system_users_snapshot = serializers.ListField(
         required=False, read_only=True, child=serializers.CharField(),
-        label=_('Approve system user display'),
+        label=_('Approve system user display'), allow_null=True,
         default=list
     )
     approve_date_start = serializers.DateTimeField(
-        required=True, label=_('Date start')
+        required=True, label=_('Date start'), allow_null=True
     )
     approve_date_expired = serializers.DateTimeField(
-        required=True, label=_('Date expired')
+        required=True, label=_('Date expired'), allow_null=True
     )
 
     def validate_approve_applications(self, approve_applications):
-        application_type = self.root.instance.meta['apply_type']
-        queries = {'type': application_type}
-        applications_id = self.filter_approve_resources(
-            resource_model=Application, resources_id=approve_applications, queries=queries
-        )
-        return applications_id
+        if not isinstance(self.root.instance, Ticket):
+            return []
+
+        with tmp_to_org(self.root.instance.org_id):
+            apply_type = self.root.instance.meta.get('apply_type')
+            queries = Q(type=apply_type)
+            queries &= Q(id__in=approve_applications)
+            applications_id = Application.objects.filter(queries).values_list('id', flat=True)
+            applications_id = [str(application_id) for application_id in applications_id]
+            if applications_id:
+                return applications_id
+
+        raise serializers.ValidationError(_(
+            'No `Application` are found under Organization `{}`'.format(self.root.instance.org_name)
+        ))
 
     def validate_approve_system_users(self, approve_system_users):
-        application_type = self.root.instance.meta['apply_type']
-        protocol = SystemUser.get_protocol_by_application_type(application_type)
-        queries = {'protocol': protocol}
-        system_users_id = self.filter_approve_system_users(approve_system_users, queries)
-        return system_users_id
+        if not isinstance(self.root.instance, Ticket):
+            return []
+
+        with tmp_to_org(self.root.instance.org_id):
+            apply_type = self.root.instance.meta.get('apply_type')
+            protocol = SystemUser.get_protocol_by_application_type(apply_type)
+            queries = Q(protocol=protocol)
+            queries &= Q(id__in=approve_system_users)
+            system_users_id = SystemUser.objects.filter(queries).values_list('id', flat=True)
+            system_users_id = [str(system_user_id) for system_user_id in system_users_id]
+            if system_users_id:
+                return system_users_id
+
+        raise serializers.ValidationError(_(
+            'No `SystemUser` are found under Organization `{}`'.format(self.root.instance.org_name)
+        ))
 
 
-class ApplyApplicationTypeSerializer(ApplySerializer, ApproveSerializer):
-    pass
+class ApplyApplicationSerializer(ApplySerializer, ApproveSerializer):
+    # 推荐信息
+    recommend_applications = serializers.SerializerMethodField()
+    recommend_system_users = serializers.SerializerMethodField()
 
+    def get_recommend_applications(self, value):
+        if not isinstance(self.root.instance, Ticket):
+            return []
 
+        apply_application_group = value.get('apply_application_group', [])
+        apply_type = value.get('apply_type')
+        queries = Q()
+        for application in apply_application_group:
+            queries |= Q(name__icontains=application)
+        queries &= Q(type=apply_type)
+
+        with tmp_to_org(self.root.instance.org_id):
+            applications_id = Application.objects.filter(queries).values_list('id', flat=True)[:5]
+            applications_id = [str(application_id) for application_id in applications_id]
+            return applications_id
+
+    def get_recommend_system_users(self, value):
+        if not isinstance(self.root.instance, Ticket):
+            return []
+
+        apply_type = value.get('apply_type')
+        apply_system_user_group = value.get('apply_system_user_group', [])
+        protocol = SystemUser.get_protocol_by_application_type(apply_type)
+        queries = Q()
+        for system_user in apply_system_user_group:
+            queries |= Q(username__icontains=system_user)
+            queries |= Q(name__icontains=system_user)
+        queries &= Q(protocol=protocol)
+
+        with tmp_to_org(self.root.instance.org_id):
+            system_users_id = SystemUser.objects.filter(queries).values_list('id', flat=True)[:5]
+            system_users_id = [str(system_user_id) for system_user_id in system_users_id]
+            return system_users_id
diff --git a/apps/tickets/serializers/ticket/meta/ticket_type/apply_asset.py b/apps/tickets/serializers/ticket/meta/ticket_type/apply_asset.py
index dd983bbcf..4d2104ff4 100644
--- a/apps/tickets/serializers/ticket/meta/ticket_type/apply_asset.py
+++ b/apps/tickets/serializers/ticket/meta/ticket_type/apply_asset.py
@@ -1,8 +1,10 @@
 from django.utils.translation import ugettext_lazy as _
+from django.db.models import Q
 from rest_framework import serializers
 from perms.serializers import ActionsField
 from assets.models import Asset, SystemUser
-from .mixin import BaseApproveSerializerMixin
+from orgs.utils import tmp_to_org
+from tickets.models import Ticket
 
 
 __all__ = [
@@ -14,74 +16,129 @@ class ApplySerializer(serializers.Serializer):
     # 申请信息
     apply_ip_group = serializers.ListField(
         required=False, child=serializers.IPAddressField(), label=_('IP group'),
-        default=list,
+        default=list, allow_null=True,
     )
     apply_hostname_group = serializers.ListField(
         required=False, child=serializers.CharField(), label=_('Hostname group'),
-        default=list,
+        default=list, allow_null=True,
     )
     apply_system_user_group = serializers.ListField(
         required=False, child=serializers.CharField(), label=_('System user group'),
-        default=list,
+        default=list, allow_null=True
     )
     apply_actions = ActionsField(
-        required=True
+        required=True, allow_null=True
     )
     apply_actions_display = serializers.ListField(
         required=False, read_only=True, child=serializers.CharField(),
-        label=_('Approve assets display'),
+        label=_('Approve assets display'), allow_null=True,
         default=list,
     )
     apply_date_start = serializers.DateTimeField(
-        required=True, label=_('Date start')
+        required=True, label=_('Date start'), allow_null=True,
     )
     apply_date_expired = serializers.DateTimeField(
-        required=True, label=_('Date expired')
+        required=True, label=_('Date expired'), allow_null=True,
     )
 
 
-class ApproveSerializer(BaseApproveSerializerMixin, serializers.Serializer):
+class ApproveSerializer(serializers.Serializer):
     # 审批信息
     approve_assets = serializers.ListField(
-        required=True, child=serializers.UUIDField(), label=_('Approve assets')
+        required=True, allow_null=True, child=serializers.UUIDField(), label=_('Approve assets')
     )
     approve_assets_snapshot = serializers.ListField(
         required=False, read_only=True, child=serializers.DictField(),
-        label=_('Approve assets display'),
+        label=_('Approve assets display'), allow_null=True,
         default=list,
     )
     approve_system_users = serializers.ListField(
-        required=True, child=serializers.UUIDField(), label=_('Approve system users')
+        required=True, allow_null=True, child=serializers.UUIDField(),
+        label=_('Approve system users')
     )
     approve_system_users_snapshot = serializers.ListField(
         required=False, read_only=True, child=serializers.DictField(),
-        label=_('Approve assets display'),
+        label=_('Approve assets display'), allow_null=True,
         default=list,
     )
     approve_actions = ActionsField(
-        required=True
+        required=True, allow_null=True,
     )
     approve_actions_display = serializers.ListField(
         required=False, read_only=True, child=serializers.CharField(),
-        label=_('Approve assets display'),
+        label=_('Approve assets display'), allow_null=True,
         default=list,
     )
     approve_date_start = serializers.DateTimeField(
-        required=True, label=_('Date start')
+        required=True, label=_('Date start'), allow_null=True,
     )
     approve_date_expired = serializers.DateTimeField(
-        required=True, label=_('Date expired')
+        required=True, label=_('Date expired'), allow_null=True
     )
 
     def validate_approve_assets(self, approve_assets):
-        assets_id = self.filter_approve_resources(resource_model=Asset, resources_id=approve_assets)
-        return assets_id
+        if not isinstance(self.root.instance, Ticket):
+            return []
+
+        with tmp_to_org(self.root.instance.org_id):
+            assets_id = Asset.objects.filter(id__in=approve_assets).values_list('id', flat=True)
+            assets_id = [str(asset_id) for asset_id in assets_id]
+            if assets_id:
+                return assets_id
+
+        raise serializers.ValidationError(_(
+            'No `Asset` are found under Organization `{}`'.format(self.root.instance.org_name)
+        ))
 
     def validate_approve_system_users(self, approve_system_users):
-        queries = {'protocol__in': SystemUser.ASSET_CATEGORY_PROTOCOLS}
-        system_users_id = self.filter_approve_system_users(approve_system_users, queries)
-        return system_users_id
+        if not isinstance(self.root.instance, Ticket):
+            return []
+
+        with tmp_to_org(self.root.instance.org_id):
+            queries = Q(protocol__in=SystemUser.ASSET_CATEGORY_PROTOCOLS)
+            queries &= Q(id__in=approve_system_users)
+            system_users_id = SystemUser.objects.filter(queries).values_list('id', flat=True)
+            system_users_id = [str(system_user_id) for system_user_id in system_users_id]
+            if system_users_id:
+                return system_users_id
+
+        raise serializers.ValidationError(_(
+            'No `Asset` are found under Organization `{}`'.format(self.root.instance.org_name)
+        ))
 
 
 class ApplyAssetSerializer(ApplySerializer, ApproveSerializer):
-    pass
+    # 推荐信息
+    recommend_assets = serializers.SerializerMethodField()
+    recommend_system_users = serializers.SerializerMethodField()
+
+    def get_recommend_assets(self, value):
+        if not isinstance(self.root.instance, Ticket):
+            return []
+
+        apply_ip_group = value.get('apply_ip_group', [])
+        apply_hostname_group = value.get('apply_hostname_group', [])
+        queries = Q(ip__in=apply_ip_group)
+        for hostname in apply_hostname_group:
+            queries |= Q(hostname__icontains=hostname)
+
+        with tmp_to_org(self.root.instance.org_id):
+            assets_id = Asset.objects.filter(queries).values_list('id', flat=True)[:5]
+            assets_id = [str(asset_id) for asset_id in assets_id]
+            return assets_id
+
+    def get_recommend_system_users(self, value):
+        if not isinstance(self.root.instance, Ticket):
+            return []
+
+        apply_system_user_group = value.get('apply_system_user_group', [])
+        queries = Q()
+        for system_user in apply_system_user_group:
+            queries |= Q(username__icontains=system_user)
+            queries |= Q(name__icontains=system_user)
+        queries &= Q(protocol__in=SystemUser.ASSET_CATEGORY_PROTOCOLS)
+
+        with tmp_to_org(self.root.instance.org_id):
+            system_users_id = SystemUser.objects.filter(queries).values_list('id', flat=True)[:5]
+            system_users_id = [str(system_user_id) for system_user_id in system_users_id]
+            return system_users_id
diff --git a/apps/tickets/serializers/ticket/meta/ticket_type/login_confirm.py b/apps/tickets/serializers/ticket/meta/ticket_type/login_confirm.py
index 27bcad02f..9308d0ee2 100644
--- a/apps/tickets/serializers/ticket/meta/ticket_type/login_confirm.py
+++ b/apps/tickets/serializers/ticket/meta/ticket_type/login_confirm.py
@@ -4,19 +4,22 @@ from django.utils.translation import ugettext_lazy as _
 
 
 __all__ = [
-    'ApplySerializer',
+    'ApplySerializer', 'LoginConfirmSerializer',
 ]
 
 
 class ApplySerializer(serializers.Serializer):
     # 申请信息
     apply_login_ip = serializers.IPAddressField(
-        required=True, label=_('Login ip')
+        required=True, label=_('Login ip'), allow_null=True
     )
     apply_login_city = serializers.CharField(
-        required=True, max_length=64, label=_('Login city')
+        required=True, max_length=64, label=_('Login city'), allow_null=True
     )
     apply_login_datetime = serializers.DateTimeField(
-        required=True, label=_('Login datetime')
+        required=True, label=_('Login datetime'), allow_null=True
     )
 
+
+class LoginConfirmSerializer(ApplySerializer):
+    pass
diff --git a/apps/tickets/serializers/ticket/meta/ticket_type/mixin.py b/apps/tickets/serializers/ticket/meta/ticket_type/mixin.py
deleted file mode 100644
index 9539267fb..000000000
--- a/apps/tickets/serializers/ticket/meta/ticket_type/mixin.py
+++ /dev/null
@@ -1,39 +0,0 @@
-from rest_framework import serializers
-from django.utils.translation import ugettext_lazy as _
-
-from orgs.utils import tmp_to_org
-from assets.models import SystemUser
-
-
-class BaseApproveSerializerMixin:
-
-    def _filter_approve_resources_by_org(self, model, resources_id):
-        with tmp_to_org(self.root.instance.org_id):
-            org_resources = model.objects.filter(id__in=resources_id)
-        if not org_resources:
-            error = _('None of the approved `{}` belong to Organization `{}`'
-                      ''.format(model.__name__, self.root.instance.org_name))
-            raise serializers.ValidationError(error)
-        return org_resources
-
-    @staticmethod
-    def _filter_approve_resources_by_queries(model, resources, queries=None):
-        if queries:
-            resources = resources.filter(**queries)
-        if not resources:
-            error = _('None of the approved `{}` does not comply with the filtering rules `{}`'
-                      ''.format(model.__name__, queries))
-            raise serializers.ValidationError(error)
-        return resources
-
-    def filter_approve_resources(self, resource_model, resources_id, queries=None):
-        resources = self._filter_approve_resources_by_org(resource_model, resources_id)
-        resources = self._filter_approve_resources_by_queries(resource_model, resources, queries)
-        resources_id = list(resources.values_list('id', flat=True))
-        return resources_id
-
-    def filter_approve_system_users(self, system_users_id, queries=None):
-        system_users_id = self.filter_approve_resources(
-            resource_model=SystemUser, resources_id=system_users_id, queries=queries
-        )
-        return system_users_id
diff --git a/apps/tickets/serializers/ticket/ticket.py b/apps/tickets/serializers/ticket/ticket.py
index 35a49048d..521d8dc3e 100644
--- a/apps/tickets/serializers/ticket/ticket.py
+++ b/apps/tickets/serializers/ticket/ticket.py
@@ -22,6 +22,9 @@ class TicketSerializer(OrgResourceModelSerializerMixin):
     type_display = serializers.ReadOnlyField(source='get_type_display', label=_('Type'))
     action_display = serializers.ReadOnlyField(source='get_action_display', label=_('Action'))
     status_display = serializers.ReadOnlyField(source='get_status_display', label=_('Status'))
+    action = ReadableHiddenField(default=const.TicketActionChoices.open.value)
+    applicant = ReadableHiddenField(default=serializers.CurrentUserDefault())
+    processor = ReadableHiddenField(default=serializers.CurrentUserDefault())
     meta = MethodSerializer()
 
     class Meta:
@@ -38,48 +41,55 @@ class TicketSerializer(OrgResourceModelSerializerMixin):
 
     def get_meta_serializer(self):
         request = self.context['request']
-        view = self.context['view']
-        query_type = request.query_params.get('type')
-        query_action = request.query_params.get('action')
-        view_action = view.action
-        action = query_action if query_action else view_action
-        if query_type:
-            serializer_class = type_serializer_classes_mapping.get(query_type, {}).get(action)
+        default_serializer_class = serializers.Serializer
+        if isinstance(self.instance, Ticket):
+            _type = self.instance.type
         else:
-            serializer_class = None
-        if serializer_class is None:
-            serializer_class = serializers.Serializer
-        serializer = serializer_class()
-        return serializer
+            _type = request.query_params.get('type')
+
+        if not _type:
+            return default_serializer_class()
+
+        action_serializer_classes_mapping = type_serializer_classes_mapping.get(_type)
+        if not action_serializer_classes_mapping:
+            return default_serializer_class()
+
+        query_action = request.query_params.get('action')
+        _action = query_action if query_action else self.context['view'].action
+        serializer_class = action_serializer_classes_mapping.get(_action)
+        if serializer_class:
+            return serializer_class()
+
+        serializer_class = action_serializer_classes_mapping.get('default')
+        if serializer_class:
+            return serializer_class()
+
+        return default_serializer_class()
 
 
 class TicketDisplaySerializer(TicketSerializer):
 
-    class Meta(TicketSerializer.Meta):
+    class Meta:
+        model = Ticket
+        fields = TicketSerializer.Meta.fields
         read_only_fields = TicketSerializer.Meta.fields
 
 
-class TicketActionSerializer(TicketSerializer):
-    action = ReadableHiddenField(default=const.TicketActionChoices.open.value)
-
-    class Meta(TicketSerializer.Meta):
-        required_fields = ['action']
-        read_only_fields = list(set(TicketDisplaySerializer.Meta.fields) - set(required_fields))
-
-
-class TicketApplySerializer(TicketActionSerializer):
-    applicant = ReadableHiddenField(default=serializers.CurrentUserDefault())
+class TicketApplySerializer(TicketSerializer):
     org_id = serializers.CharField(
         max_length=36, allow_blank=True, required=True, label=_("Organization")
     )
 
-    class Meta(TicketActionSerializer.Meta):
-        required_fields = TicketActionSerializer.Meta.required_fields + [
-            'id', 'title', 'type', 'applicant', 'meta', 'assignees', 'comment', 'org_id'
+    class Meta:
+        model = Ticket
+        fields = TicketSerializer.Meta.fields
+        required_fields = [
+            'id', 'title', 'type', 'applicant', 'action', 'meta', 'assignees', 'comment', 'org_id'
         ]
-        read_only_fields = list(set(TicketDisplaySerializer.Meta.fields) - set(required_fields))
+        read_only_fields = list(set(fields) - set(required_fields))
         extra_kwargs = {
             'type': {'required': True},
+            'org_id': {'required': True},
         }
 
     def validate_type(self, tp):
@@ -115,37 +125,43 @@ class TicketApplySerializer(TicketActionSerializer):
         return const.TicketActionChoices.open.value
 
 
-class TicketProcessSerializer(TicketActionSerializer):
-    processor = ReadableHiddenField(default=serializers.CurrentUserDefault())
+class TicketApproveSerializer(TicketSerializer):
 
-    class Meta(TicketActionSerializer.Meta):
-        required_fields = TicketActionSerializer.Meta.required_fields + ['processor']
-        read_only_fields = list(set(TicketDisplaySerializer.Meta.fields) - set(required_fields))
-
-
-class TicketApproveSerializer(TicketProcessSerializer):
-
-    class Meta(TicketProcessSerializer.Meta):
-        required_fields = TicketProcessSerializer.Meta.required_fields + ['meta']
-        read_only_fields = list(set(TicketDisplaySerializer.Meta.fields) - set(required_fields))
+    class Meta:
+        model = Ticket
+        fields = TicketSerializer.Meta.fields
+        required_fields = ['processor', 'action', 'meta']
+        read_only_fields = list(set(fields) - set(required_fields))
 
     def validate_meta(self, meta):
-        instance_meta = self.instance.meta
-        instance_meta.update(meta)
-        return instance_meta
+        _meta = self.instance.meta if self.instance else {}
+        _meta.update(meta)
+        return _meta
 
     @staticmethod
     def validate_action(action):
         return const.TicketActionChoices.approve.value
 
 
-class TicketRejectSerializer(TicketProcessSerializer):
+class TicketRejectSerializer(TicketSerializer):
+    meta = MethodSerializer(read_only=True)
+
+    class Meta:
+        model = Ticket
+        fields = TicketSerializer.Meta.fields
+        read_only_fields = fields
 
     def validate_action(self, action):
         return const.TicketActionChoices.reject.value
 
 
-class TicketCloseSerializer(TicketProcessSerializer):
+class TicketCloseSerializer(TicketSerializer):
+    meta = MethodSerializer(read_only=True)
+
+    class Meta:
+        model = Ticket
+        fields = TicketSerializer.Meta.fields
+        read_only_fields = fields
 
     def validate_action(self, action):
         return const.TicketActionChoices.close.value
diff --git a/apps/tickets/signals_handler.py b/apps/tickets/signals_handler.py
index 887cc1a79..0afd2a587 100644
--- a/apps/tickets/signals_handler.py
+++ b/apps/tickets/signals_handler.py
@@ -17,26 +17,27 @@ logger = get_logger(__name__)
 
 @receiver(pre_save, sender=Ticket)
 def on_ticket_pre_save(sender, instance=None, **kwargs):
+    instance.set_display_fields()
+
     if instance.has_processed:
         instance.set_status_closed()
-    instance.set_display_fields()
 
 
 @receiver(post_save, sender=Ticket)
-def on_ticket_post_save(sender, instance=None, **kwargs):
-    instance.create_action_comment()
-    if instance.action_open:
+def on_ticket_post_save(sender, instance=None, created=False, **kwargs):
+
+    if created and instance.action_open:
+        instance.create_action_comment()
         instance.create_applied_comment()
-        return
-    if instance.action_approve:
-        instance.create_permission()
-        instance.create_approved_comment()
-    logger.debug(
-        'Ticket () has processed, send mail to applicant: {}'.format(
-            instance.title, instance.applicant_display
-        )
-    )
-    send_ticket_processed_mail_to_applicant(instance)
+
+    if not created and instance.has_processed:
+        instance.create_action_comment()
+        msg = 'Ticket () has processed, send mail to applicant: {}'
+        logger.debug(msg.format(instance.title, instance.applicant_display))
+        send_ticket_processed_mail_to_applicant(instance)
+        if instance.action_approve:
+            instance.create_permission()
+            instance.create_approved_comment()
 
 
 @receiver(m2m_changed, sender=Ticket.assignees.through)