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class JSONDataMetaclass(SerializerMetaclass): """Meta class to dynamically add SerializerMethodField and look up JSON data""" def __new__(cls, name, bases, attrs): for field in getattr(attrs.get('Meta'), 'json_fields', []): def _(self, obj): return obj.raw_data.get(field[1]) attrs[field[0]] = serializers.SerializerMethodField() attrs['get_{}'.format(field[0])] = _ return super(JSONDataMetaclass, cls).__new__(cls, name, bases, attrs) |
Then you can use it by:
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@six.add_metaclass(JSONDataMetaclass) class ItemSerializer(serializers.ModelSerializer): class Meta: """Serializer config.""" json_fields = [('asid', 'ASID'), ...] fields = [...] |