Unexpected Enum Component Naming for SerializerMethodField with List[TextChoices]

[zhuang42]

When using a SerializerMethodField to describe a list of values from a Django TextChoices enum, drf‑spectacular generates the referenced enum component name based on the serializer field name rather than the underlying enum class. In our case, even though we use a ChoiceField with choices from the ModelAction enum, the generated OpenAPI schema refers to the component as AllowedActionsEnum (derived from the field name) instead of ModelActionEnum (which is expected from the enum’s class name).

Does this behavior work as intended, or is there a recommended way to override the enum naming?

Minimal Reproducible Example:

1. model.py

class ModelAction(models.TextChoices):
    SEND = "send", _("Send")
    ACCEPT = "accept", _("Accept")

class ModelA(models.Model):
   

    def get_action(self) -> list[ModelAction]:
        return [ModelAction.SEND, ModelAction.ACCEPT]

2. serializers.py

class ModelASerializer(serializers.ModelSerializer):
    allowed_actions = serializers.SerializerMethodField()

    @extend_schema_field(
        serializers.ListField(
            child=serializers.ChoiceField(choices=ModelAction.choices)
        )
    )
    def get_allowed_actions(self, obj) -> list[ModelAction]:
        return obj.get_action()

    class Meta:
        model = ModelA
        fields = ["allowed_actions"]

3. Generated OpenAPI Schema
The generated schema uses AllowedActionsEnum (derived from the serializer field name) with a definition similar to:

ModelA:
  type: object
  properties:
    allowed_actions:
      type: array
      items:
        $ref: '#/components/schemas/AllowedActionsEnum'
      readOnly: true

AllowedActionsEnum:
  type: string
  enum:
    - send
    - accept
  description: |-
    * `send` - send
    * `accept` - accept

4. Expected schema

I want to the enum should be referenced as ModelActionEnum (based on the TextChoices class name):

ModelA:
  type: object
  properties:
    allowed_actions:
      type: array
      items:
        $ref: '#/components/schemas/ModelActionEnum'
      readOnly: true

ModelActionEnum:
  type: string
  enum:
    - send
    - accept
  description: |-
    * `send` - send
    * `accept` - accept