feat: add course language to courseware API (#34392)

openedx/core/djangoapps/courseware_api/serializers.py

@@ -91,6 +91,7 @@ class CourseInfoSerializer(serializers.Serializer):  # pylint: disable=abstract-
     entrance_exam_data = serializers.DictField()
     id = serializers.CharField()  # pylint: disable=invalid-name
     license = serializers.CharField()
+    language = serializers.CharField(allow_null=True)
     media = _CourseApiMediaCollectionSerializer(source='*')
     name = serializers.CharField(source='display_name_with_default_escaped')
     offer = serializers.DictField()

openedx/core/djangoapps/courseware_api/views.py

@@ -134,6 +134,10 @@ class CoursewareMeta:
     def license(self):
         return self.course.license
 
+    @property
+    def language(self):
+        return self.course.language
+
     @property
     def notes(self):
         """
@@ -418,6 +422,7 @@ class CoursewareInformation(RetrieveAPIView):
             * entrance_exam_passed: (bool) Indicates if the entrance exam has been passed
         * id: A unique identifier of the course; a serialized representation
             of the opaque key identifying the course.
+        * language: The language code for the course
         * media: An object that contains named media items.  Included here:
             * course_image: An image to show for the course.  Represented
               as an object with the following fields: