REST framework serializer 数据data校验失败返回状态码

serializer raise 状态码修改

## rest-framework serializer 数据校验失败时默认为 code=400,但是因为业务需求需要将状态码改为200
## 可以按以下操作使用

class TestSerializer(serializers.ModelSerializer):

	def create(self, validated_data):
		hos = test.objects.filter(name=validated_data['name']).first()
		if hos:
		   res = serializers.ValidationError({"code":10400, "msg":"Hospital name already exists", "data":[]})
		   res.status_code = 200
		   raise res
	
		instance = Test.objects.create(**validated_data)
		return instance
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rest-framework 自定义异常

tools/exception_handler.py

from rest_framework.views import exception_handler
from rest_framework import exceptions
from rest_framework.response import Response

def custom_exception_handler(exc, context):
    if type(exc) is exceptions.ValidationError:
        # Triggered when serialization resolution fails
        response = Response(status=200)

        # for k,v in exc.detail.items():
        #     print(k,v[0])

        ## Custom return error message 
        data = [v[0] for k,v in exc.detail.items()][0]

        response.data = {'code':10400,'msg':data, 'data':{}}

    ## AuthenticationFailed
    elif isinstance(exc, exceptions.AuthenticationFailed):
        # msg is username or password is incorrect!
        # Modified default parameters
        response = Response(status=200)
        response.data = {'code':10404,'msg':exc.detail, 'data':{}}

    ## ParseError
    elif isinstance(exc, exceptions.ParseError):
        # msg is JSON parse error - Expecting property name enclosed in double quotes: line 7 column 1 (char 114)
        # Triggered on JSON exception
        response = Response(status=200)
        response.data = {'code':10400,'msg':exc.detail, 'data':{}}

    else:
        # Call REST framework's default exception handler first,
        # to get the standard error response.
        response = exception_handler(exc, context)
        print(response.data.get('detail'))

    return response

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配置文件中加入

REST_FRAMEWORK = {
	'EXCEPTION_HANDLER': 'tools.exception_handler.custom_exception_handler',
}
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