fix: errors during swagger api-docs generation (#273)

* ObjectTag.name is no longer a field, using export_id instead
* KeyError: 'pk'
* chore: bumps package version
* fix: swagger docs missing queryset issue

---------

Co-authored-by: Navin Karkera <navin@opencraft.com>

openedx_learning/__init__.py

@@ -2,4 +2,4 @@
 Open edX Learning ("Learning Core").
 """
 
-__version__ = "0.18.1"
+__version__ = "0.18.2"

openedx_tagging/core/tagging/rest_api/v1/serializers.py

@@ -157,8 +157,7 @@ class ObjectTagSerializer(ObjectTagMinimalSerializer):
     class Meta:
         model = ObjectTag
         fields = ObjectTagMinimalSerializer.Meta.fields + [
-            # The taxonomy name
-            "name",
+            "export_id",
             "taxonomy_id",
             # If the Tag or Taxonomy has been deleted, this ObjectTag shouldn't be shown to users.
             "is_deleted",

openedx_tagging/core/tagging/rest_api/v1/views.py

@@ -782,8 +782,8 @@ def get_taxonomy(self) -> Taxonomy:
         The current taxonomy is cached in the view.
         """
         if not self._taxonomy:
-            taxonomy_id = int(self.kwargs["pk"])
-            taxonomy = get_taxonomy(taxonomy_id)
+            taxonomy_id = self.kwargs.get("pk")
+            taxonomy = get_taxonomy(int(taxonomy_id)) if taxonomy_id else None
             if not taxonomy:
                 raise Http404("Taxonomy not found")
             self.check_object_permissions(self.request, taxonomy)
@@ -799,6 +799,9 @@ def get_serializer_context(self):
         context['request'] = self.request
         serializer = self.serializer_class(self, context=context)
 
+        if getattr(self, 'swagger_fake_view', False):
+            # queryset just for schema generation metadata
+            return context
         # Instead of checking permissions for each TagData instance, we just check them once for the whole taxonomy
         # (since that's currently how our rules work). This might change if Tag-specific permissions are needed.
         taxonomy = self.get_taxonomy()
@@ -814,6 +817,9 @@ def get_queryset(self) -> TagDataQuerySet:
         """
         Builds and returns the queryset to be paginated.
         """
+        if getattr(self, 'swagger_fake_view', False):
+            # queryset just for schema generation metadata
+            return Taxonomy.objects.none()  # type: ignore[return-value]
         taxonomy = self.get_taxonomy()
         parent_tag_value = self.request.query_params.get("parent_tag", None)
         include_counts = "include_counts" in self.request.query_params