2016-09-19 07:47:58 +00:00
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# coding: utf-8
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from django.db import models
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2016-10-01 12:26:43 +00:00
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from django.http import JsonResponse
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2017-12-26 17:29:23 +00:00
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from django.utils import timezone
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2019-05-21 08:24:01 +00:00
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from django.core.cache import cache
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2016-09-19 07:47:58 +00:00
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from django.utils.translation import ugettext_lazy as _
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2019-06-13 10:58:43 +00:00
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from django.contrib import messages
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2019-04-25 02:11:50 +00:00
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from rest_framework.utils import html
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from rest_framework.settings import api_settings
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from rest_framework.exceptions import ValidationError
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from rest_framework.fields import SkipField
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2018-07-20 10:42:01 +00:00
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2019-05-21 08:24:01 +00:00
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from .const import KEY_CACHE_RESOURCES_ID
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2016-09-19 07:47:58 +00:00
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class NoDeleteQuerySet(models.query.QuerySet):
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def delete(self):
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2017-12-26 17:29:23 +00:00
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return self.update(is_discard=True, discard_time=timezone.now())
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2016-09-19 07:47:58 +00:00
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class NoDeleteManager(models.Manager):
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def get_all(self):
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return NoDeleteQuerySet(self.model, using=self._db)
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def get_queryset(self):
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return NoDeleteQuerySet(self.model, using=self._db).filter(is_discard=False)
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def get_deleted(self):
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return NoDeleteQuerySet(self.model, using=self._db).filter(is_discard=True)
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class NoDeleteModelMixin(models.Model):
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is_discard = models.BooleanField(verbose_name=_("is discard"), default=False)
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discard_time = models.DateTimeField(verbose_name=_("discard time"), null=True, blank=True)
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objects = NoDeleteManager()
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class Meta:
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abstract = True
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def delete(self):
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self.is_discard = True
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2017-12-26 17:29:23 +00:00
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self.discard_time = timezone.now()
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2016-09-19 07:47:58 +00:00
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return self.save()
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2016-10-01 12:26:43 +00:00
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class JSONResponseMixin(object):
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"""JSON mixin"""
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2016-11-24 09:08:20 +00:00
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@staticmethod
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def render_json_response(context):
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2016-10-01 12:26:43 +00:00
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return JsonResponse(context)
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2016-10-02 03:09:27 +00:00
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2018-02-02 09:06:08 +00:00
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class IDInFilterMixin(object):
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2016-10-02 03:09:27 +00:00
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def filter_queryset(self, queryset):
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2018-02-02 09:06:08 +00:00
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queryset = super(IDInFilterMixin, self).filter_queryset(queryset)
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2016-10-02 03:09:27 +00:00
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id_list = self.request.query_params.get('id__in')
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if id_list:
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import json
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try:
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ids = json.loads(id_list)
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except Exception as e:
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return queryset
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if isinstance(ids, list):
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queryset = queryset.filter(id__in=ids)
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return queryset
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2017-12-12 04:19:45 +00:00
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2019-05-21 08:24:01 +00:00
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class IDInCacheFilterMixin(object):
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def filter_queryset(self, queryset):
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queryset = super(IDInCacheFilterMixin, self).filter_queryset(queryset)
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spm = self.request.query_params.get('spm')
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cache_key = KEY_CACHE_RESOURCES_ID.format(spm)
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resources_id = cache.get(cache_key)
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if resources_id and isinstance(resources_id, list):
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queryset = queryset.filter(id__in=resources_id)
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return queryset
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class IDExportFilterMixin(object):
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def filter_queryset(self, queryset):
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# 下载导入模版
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if self.request.query_params.get('template') == 'import':
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return []
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else:
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return super(IDExportFilterMixin, self).filter_queryset(queryset)
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2017-12-12 04:19:45 +00:00
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class BulkSerializerMixin(object):
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"""
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Become rest_framework_bulk not support uuid as a primary key
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so rewrite it. https://github.com/miki725/django-rest-framework-bulk/issues/66
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"""
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def to_internal_value(self, data):
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from rest_framework_bulk import BulkListSerializer
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ret = super(BulkSerializerMixin, self).to_internal_value(data)
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id_attr = getattr(self.Meta, 'update_lookup_field', 'id')
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2018-09-07 04:40:26 +00:00
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if self.context.get('view'):
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request_method = getattr(getattr(self.context.get('view'), 'request'), 'method', '')
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# add update_lookup_field field back to validated data
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# since super by default strips out read-only fields
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# hence id will no longer be present in validated_data
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if all((isinstance(self.root, BulkListSerializer),
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id_attr,
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request_method in ('PUT', 'PATCH'))):
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id_field = self.fields[id_attr]
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if data.get("id"):
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id_value = id_field.to_internal_value(data.get("id"))
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else:
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id_value = id_field.to_internal_value(data.get("pk"))
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ret[id_attr] = id_value
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2017-12-12 04:19:45 +00:00
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return ret
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2019-04-25 02:11:50 +00:00
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class BulkListSerializerMixin(object):
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"""
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Become rest_framework_bulk doing bulk update raise Exception:
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'QuerySet' object has no attribute 'pk' when doing bulk update
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so rewrite it .
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https://github.com/miki725/django-rest-framework-bulk/issues/68
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"""
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def to_internal_value(self, data):
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"""
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List of dicts of native values <- List of dicts of primitive datatypes.
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"""
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if html.is_html_input(data):
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data = html.parse_html_list(data)
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if not isinstance(data, list):
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message = self.error_messages['not_a_list'].format(
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input_type=type(data).__name__
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)
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raise ValidationError({
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api_settings.NON_FIELD_ERRORS_KEY: [message]
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}, code='not_a_list')
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if not self.allow_empty and len(data) == 0:
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if self.parent and self.partial:
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raise SkipField()
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message = self.error_messages['empty']
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raise ValidationError({
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api_settings.NON_FIELD_ERRORS_KEY: [message]
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}, code='empty')
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ret = []
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errors = []
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for item in data:
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try:
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# prepare child serializer to only handle one instance
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2019-05-21 08:24:01 +00:00
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if 'id' in item.keys():
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self.child.instance = self.instance.get(id=item['id']) if self.instance else None
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if 'pk' in item.keys():
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self.child.instance = self.instance.get(id=item['pk']) if self.instance else None
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2019-04-25 02:11:50 +00:00
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self.child.initial_data = item
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# raw
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validated = self.child.run_validation(item)
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except ValidationError as exc:
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errors.append(exc.detail)
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else:
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ret.append(validated)
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errors.append({})
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if any(errors):
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raise ValidationError(errors)
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return ret
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2017-12-12 04:19:45 +00:00
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2017-12-26 17:29:23 +00:00
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class DatetimeSearchMixin:
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2018-01-01 07:08:33 +00:00
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date_format = '%Y-%m-%d'
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2017-12-26 17:29:23 +00:00
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date_from = date_to = None
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2018-07-19 10:36:52 +00:00
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def get_date_range(self):
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2017-12-26 17:29:23 +00:00
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date_from_s = self.request.GET.get('date_from')
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date_to_s = self.request.GET.get('date_to')
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if date_from_s:
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2018-01-01 07:08:33 +00:00
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date_from = timezone.datetime.strptime(date_from_s, self.date_format)
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2018-03-02 07:39:01 +00:00
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tz = timezone.get_current_timezone()
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self.date_from = tz.localize(date_from)
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2017-12-26 17:29:23 +00:00
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else:
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self.date_from = timezone.now() - timezone.timedelta(7)
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if date_to_s:
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date_to = timezone.datetime.strptime(
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2018-01-01 07:08:33 +00:00
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date_to_s + ' 23:59:59', self.date_format + ' %H:%M:%S'
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2017-12-26 17:29:23 +00:00
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)
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self.date_to = date_to.replace(
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tzinfo=timezone.get_current_timezone()
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)
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else:
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self.date_to = timezone.now()
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2018-07-19 10:36:52 +00:00
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def get(self, request, *args, **kwargs):
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self.get_date_range()
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2018-01-11 12:10:27 +00:00
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return super().get(request, *args, **kwargs)
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2019-06-13 10:58:43 +00:00
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class ApiMessageMixin:
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success_message = _("%(name)s was %(action)s successfully")
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_action_map = {"create": _("create"), "update": _("update")}
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def get_success_message(self, cleaned_data):
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2019-06-19 08:45:14 +00:00
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if not isinstance(cleaned_data, dict):
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return ''
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2019-06-13 10:58:43 +00:00
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data = {k: v for k, v in cleaned_data.items()}
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action = getattr(self, "action", "create")
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data["action"] = self._action_map.get(action)
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2019-06-19 11:25:21 +00:00
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try:
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message = self.success_message % data
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except:
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message = ''
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2019-06-13 10:58:43 +00:00
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return message
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def dispatch(self, request, *args, **kwargs):
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resp = super().dispatch(request, *args, **kwargs)
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2019-06-21 04:01:18 +00:00
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if request.method.lower() in ("get", "delete", "patch"):
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2019-06-13 10:58:43 +00:00
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return resp
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if resp.status_code >= 400:
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return resp
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message = self.get_success_message(resp.data)
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if message:
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messages.success(request, message)
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return resp
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