django rest framework: set field-level error from serializer validate() method

Question

I have a serializer that validates fields based on the values of other fields, In the error response I would like to show each field error as a field error as opposed to showing

Answer 1

If you have logic that applies to all the fields, you can still get the desired result by doing this:

def validate(self, data):
    for key, value in data.items():
        # checks if value is empty
        if not value:
            raise serializers.ValidationError({key: "This field should not be left empty."})

    return data