如何配置Django Rest Framework以自定义文本返回错误 [英] How Configure Django Rest Framework to return errors with custom text
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问题描述
我想在向数据库添加新项目时自定义JSON响应,返回以下内容。
I want to customize the JSON response when adding a new item to the database it returns the following.
HTTP 400 BAD REQUEST
Content-Type: application/json Vary:
Accept Allow: POST, OPTIONS
{
"nick": [
"Users with this Nick already exists."
]
}
和
{
"nick": [
"Your username is empty"
]
}
我希望它返回(此用户名已存在,请使用其他的)。
I want it to return (This username already exists, please use a different one.)
或
"Username %s already exists", (self.nick)
我使用以下示例,但如果值为空或无效,则不起作用。
I used the following sample but does not work if the value is empty or invalid.
def validate_title(self, attrs, source):
"""
Check that the blog post is about Django.
"""
value = attrs[source]
if "django" not in value.lower():
raise serializers.ValidationError("Blog post is not about Django")
return attrs
这是发送到API的JSON。
this is the JSON that gets sent to the API.
{
"name": "myname",
"nick":"",
"type_account":"1",
"email":"my-email@gmail.com",
"pass_field":"12345"
}
serializers.py
serializers.py
class userSerializer(serializers.ModelSerializer):
class Meta:
model = users
fields = ('nick', 'email', 'pass_field', 'type_account')
def validate_nick(self, attrs, source):
value = attrs[source]
if not value:
raise serializers.ValidationError('Username cannot be empty')
elif self.Meta.model.objects.filter(nick=value).exists():
raise serializers.ValidationError("Username "+value+" is in use")
return attrs
views.py
@api_view(['POST'])
def user_add(request):
"""
Saves a new user on the database
"""
if request.method == 'POST':
serializer = userSerializer(data=request.DATA)
if serializer.is_valid():
serializer.save()
return Response(serializer.data, status=status.HTTP_201_CREATED)
else:
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
推荐答案
此问题的答案还会添加以下内容作为@Fiver回答
the answer to this question also adds the following as @Fiver answered
class userLoginSerializer(serializers.ModelSerializer):
nick = serializers.CharField(error_messages={'required':'Please Type a Username'})
pass_field = serializers.CharField(error_messages={'required':'Please Type a Password'})
class Meta:
model = users
fields = ('nick', 'pass_field')
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