Django filter based on SerializerMethodField

Question

I have a similar type of code provided below.

serializer.py

class FooSerailizer(BaseModelSerializer):
    value = serializers.SerializerMethodField(read_only=True)
    
    def get_value(self,obj):
        # some statement of code
        # return statement

    class meta:
        model = Foo
        fields = '__all__'

filters.py

class FooFilter(filters.FilterSet):
    class meta:
        model = models.Foo
        fields = '__all__'

The API request is http://127.0.0.1:8000/api/?value=some_value.

The response I am getting when I am calling the above API:

{
    "value": [
        "Select a valid choice. That choice is not one of the available choices."
    ]
}

How to get the JSON response correctly?

Answer 1

Django cannot filter based on serializer, you will need to create a custom filter field in your filterset. Check out https://django-filter.readthedocs.io/en/stable/ref/filters.html.