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71 lines
2.4 KiB
71 lines
2.4 KiB
from rest_framework import serializers
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example_info = [
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{"name": "name", "label": "姓名", "required": False, "default": "广州老广", "type": "str"},
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{"name": "age", "label": "年龄", "required": False, "default": 18, "type": "int"},
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]
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type_field_map = {
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"str": serializers.CharField,
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"password": serializers.CharField,
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"int": serializers.IntegerField,
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"bool": serializers.BooleanField,
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"text": serializers.CharField,
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"choice": serializers.ChoiceField,
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"list": serializers.ListField,
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}
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def set_default_if_need(data, i):
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field_name = data.pop('name', 'Attr{}'.format(i + 1))
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data['name'] = field_name
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if not data.get('label'):
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data['label'] = field_name
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return data
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def set_default_by_type(tp, data, field_info):
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if tp == 'str':
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data['max_length'] = 4096
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elif tp == 'password':
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data['write_only'] = True
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elif tp == 'choice':
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choices = field_info.pop('choices', [])
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if isinstance(choices, str):
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choices = choices.split(',')
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choices = [
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(c, c.title()) if not isinstance(c, (tuple, list)) else c
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for c in choices
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]
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data['choices'] = choices
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return data
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def create_serializer_class(serializer_name, fields_info):
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serializer_fields = {}
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fields_name = ['name', 'label', 'default', 'required', 'type', 'help_text']
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for i, field_info in enumerate(fields_info):
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data = {k: field_info.get(k) for k in fields_name}
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field_type = data.pop('type', 'str')
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# 用户定义 default 和 required 可能会冲突, 所以要处理一下
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default = data.get('default', None)
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if default is None:
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data.pop('default', None)
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data['required'] = True
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elif default == '':
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data['required'] = False
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data['allow_blank'] = True
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else:
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data['required'] = False
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data = set_default_by_type(field_type, data, field_info)
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data = set_default_if_need(data, i)
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if field_type in ['int', 'bool', 'list'] and "allow_blank" in data.keys():
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data.pop('allow_blank')
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field_name = data.pop('name')
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field_class = type_field_map.get(field_type, serializers.CharField)
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serializer_fields[field_name] = field_class(**data)
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return type(serializer_name, (serializers.Serializer,), serializer_fields)
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