CODEWITHSUNDEEP
pythondjangodjango-rest-framework
artem
artem

Reputation: 16808

Field Field name `test` is not valid for model `Ability`

I have a model without field 'test'. I'm assigning this field in runtime:

ability = Ability.objects.first()
ability.test = 'TEST!!'

I also have the serilizer:

class AbilitySerializer(serializers.ModelSerializer):
    class Meta:
        model = Ability
        fields = ('name', 'test',)

And when I use it:

return Response(AbilitySerializer(ability).data)

I'm getting error:

Field Field name `test` is not valid for model `Ability`.

EDIT: I'm still facing this issue when I'm passing array of objects to serializer (with many=True). It's OK when I pass single instance.

Why and how to fix it?

Upvotes: 0

Views: 2373

Answers (1)

Mark Galloway
Mark Galloway

Reputation: 4151

As Ajay Gupta indicated, non-model fields/methods/properties must be explicitly declared:

class AbilitySerializer(serializers.ModelSerializer):
    # read_only since test is not a model field
    test = serializers.CharField(read_only=True)

    class Meta:
        model = Ability
        fields = ('name', 'test',)

Additionally, if you do not always provide test, consider:

test = serializers.CharField(required=False, read_only=True)

Upvotes: 2

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