remove: questionnaire API endpoints (announced 2.56, EOL in 2.59)

Removes the five deprecated questionnaire REST endpoints and their
backing viewsets/serializers. The questionnaire UI feature itself
(under dojo/survey/) and all underlying models stay untouched — this
PR only removes the API surface that was announced for removal in
DefectDojo 2.56.0 and is now end-of-life per the 2.59 release notes.

Endpoints removed:
- /api/v2/questionnaire_answered_questionnaires/
- /api/v2/questionnaire_answers/
- /api/v2/questionnaire_engagement_questionnaires/
- /api/v2/questionnaire_general_questionnaires/
- /api/v2/questionnaire_questions/

Drops the corresponding ViewSets, serializers, and the
QuestionSubClassFieldsMixin / AnswerSubClassFieldsMixin helpers that
existed solely to support these viewsets. Removes the matching
endpoint registrations in dojo/urls.py and prunes the corresponding
test classes from unittests/test_rest_framework.py and the
expected-endpoint list in unittests/test_apiv2_methods_and_endpoints.py.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: Maffooch

dojo/api_v2/mixins.py

@@ -8,7 +8,6 @@
 from rest_framework.decorators import action
 
 from dojo.api_v2 import serializers
-from dojo.models import Answer, Question
 
 
 class DeletePreviewModelMixin:
@@ -46,13 +45,3 @@ def flatten(elem):
 
         serializer = serializers.DeletePreviewSerializer(page, many=True)
         return self.get_paginated_response(serializer.data)
-
-
-class QuestionSubClassFieldsMixin:
-    def get_queryset(self):
-        return Question.objects.select_subclasses()
-
-
-class AnswerSubClassFieldsMixin:
-    def get_queryset(self):
-        return Answer.objects.select_subclasses()

dojo/api_v2/serializers.py

@@ -48,13 +48,9 @@
     SEVERITY_CHOICES,
     STATS_FIELDS,
     Announcement,
-    Answer,
-    Answered_Survey,
     App_Analysis,
     BurpRawRequestResponse,
     Check_List,
-    ChoiceAnswer,
-    ChoiceQuestion,
     Cred_Mapping,
     Cred_User,
     Development_Environment,
@@ -67,12 +63,10 @@
     Endpoint_Status,
     Engagement,
     Engagement_Presets,
-    Engagement_Survey,
     FileUpload,
     Finding,
     Finding_Group,
     Finding_Template,
-    General_Survey,
     Global_Role,
     Language_Type,
     Languages,
@@ -87,7 +81,6 @@
     Product_Type,
     Product_Type_Group,
     Product_Type_Member,
-    Question,
     Regulation,
     Risk_Acceptance,
     Role,
@@ -100,8 +93,6 @@
     Test_Import,
     Test_Import_Finding_Action,
     Test_Type,
-    TextAnswer,
-    TextQuestion,
     Tool_Configuration,
     Tool_Product_Settings,
     Tool_Type,
@@ -3120,111 +3111,6 @@ class Meta:
         exclude = ("content_type",)
 
 
-class QuestionnaireQuestionSerializer(serializers.ModelSerializer):
-    def to_representation(self, instance):
-        if isinstance(instance, TextQuestion):
-            return TextQuestionSerializer(instance=instance).data
-        if isinstance(instance, ChoiceQuestion):
-            return ChoiceQuestionSerializer(instance=instance).data
-        return QuestionSerializer(instance=instance).data
-
-    class Meta:
-        model = Question
-        exclude = ("polymorphic_ctype",)
-
-
-class QuestionSerializer(serializers.ModelSerializer):
-    class Meta:
-        model = Question
-        exclude = ("polymorphic_ctype",)
-
-
-class TextQuestionSerializer(serializers.ModelSerializer):
-    class Meta:
-        model = TextQuestion
-        exclude = ("polymorphic_ctype",)
-
-
-class ChoiceQuestionSerializer(serializers.ModelSerializer):
-    choices = serializers.StringRelatedField(many=True)
-
-    class Meta:
-        model = ChoiceQuestion
-        exclude = ("polymorphic_ctype",)
-
-
-class QuestionnaireAnsweredSurveySerializer(serializers.ModelSerializer):
-    class Meta:
-        model = Answered_Survey
-        fields = "__all__"
-
-
-class QuestionnaireAnswerSerializer(serializers.ModelSerializer):
-    def to_representation(self, instance):
-        if isinstance(instance, TextAnswer):
-            return TextAnswerSerializer(instance=instance).data
-        if isinstance(instance, ChoiceAnswer):
-            return ChoiceAnswerSerializer(instance=instance).data
-        return AnswerSerializer(instance=instance).data
-
-    class Meta:
-        model = Answer
-        exclude = ("polymorphic_ctype",)
-
-
-class AnswerSerializer(serializers.ModelSerializer):
-    question = serializers.StringRelatedField()
-    answered_survey = QuestionnaireAnsweredSurveySerializer()
-
-    class Meta:
-        model = Answer
-        exclude = ("polymorphic_ctype",)
-
-
-class TextAnswerSerializer(serializers.ModelSerializer):
-    question = serializers.StringRelatedField()
-    answered_survey = QuestionnaireAnsweredSurveySerializer()
-
-    class Meta:
-        model = TextAnswer
-        exclude = ("polymorphic_ctype",)
-
-
-class ChoiceAnswerSerializer(serializers.ModelSerializer):
-    answer = serializers.StringRelatedField(many=True)
-    question = serializers.StringRelatedField()
-    answered_survey = QuestionnaireAnsweredSurveySerializer()
-
-    class Meta:
-        model = ChoiceAnswer
-        exclude = ("polymorphic_ctype",)
-
-
-class QuestionnaireEngagementSurveySerializer(serializers.ModelSerializer):
-    questions = serializers.SerializerMethodField()
-
-    @extend_schema_field(serializers.ListField(child=serializers.CharField()))
-    def get_questions(self, obj):
-        questions = obj.questions.all()
-        formated_questions = []
-        for question in questions:
-            formated_question = f"Order #{question.order} - {question.text}{' (Optional)' if question.optional else ''}"
-            formated_questions.append(formated_question)
-        return formated_questions
-
-    class Meta:
-        model = Engagement_Survey
-        fields = "__all__"
-
-
-class QuestionnaireGeneralSurveySerializer(serializers.ModelSerializer):
-    survey = QuestionnaireEngagementSurveySerializer()
-
-    class Meta:
-        model = General_Survey
-        fields = "__all__"
-
-
 class AnnouncementSerializer(serializers.ModelSerializer):
 
     class Meta: