Trouble handling recursive definitions.

[ngnpope]

djangorestframework-recursive provides a RecursiveField(), e.g.

    class TreeSerializer(serializers.Serializer):
        children = ListField(child=RecursiveField())

    class ListSerializer(serializers.Serializer):
        next = RecursiveField(allow_null=True)

I started thinking how to use OpenApiSerializerFieldExtension, but wasn't sure how to refer to the serializer/component that contains the field:

class RecursiveFieldFix(OpenApiSerializerFieldExtension):
    target_class = "rest_framework_recursive.fields.RecursiveField"
    priority = 1

    def map_serializer_field(self, auto_schema: AutoSchema, direction):
        # Somehow reference the serializer that contains this field. 

How might this be achieved?

[tfranzel]

Hey,

we do support recursion, but i achieved this manually before: https://github.com/tfranzel/drf-spectacular/blob/master/tests/test_recursion.py

had a quick look and by accident implemented it in a couple of minutes. 😄 usually we achieve this through self.target.parent, but somehow their magic prevents this from working. they introduce the proxied variable for that purpose. have a look at the commit. rather easy actually.

[ngnpope]

Sorry for the delay getting back to you. The fix seems to work nicely. Thanks! 😄