feat: return override fields from properties when they are populated

course_discovery/apps/course_metadata/management/commands/populate_product_catalog.py

@@ -105,7 +105,8 @@ def get_products(self, product_type, product_source):
                 subject_translations
             )
         elif product_type == 'degree':
-            queryset = Program.objects.marketable().exclude(degree__isnull=True).select_related('partner', 'type')
+            queryset = Program.objects.marketable().exclude(degree__isnull=True) \
+                .select_related('partner', 'type', 'primary_subject_override', 'language_override')
 
             if product_source:
                 queryset = queryset.filter(product_source__slug=product_source)
@@ -164,12 +165,12 @@ def get_transformed_data(self, product, product_type):
             })
         elif product_type == 'degree':
             data.update({
-                "Subjects": ", ".join(subject.name for subject in product.subjects),
+                "Subjects": ", ".join(subject.name for subject in product.active_subjects),
                 "Subjects Spanish": ", ".join(
                     translation.name for subject in product.subjects
                     for translation in subject.spanish_translations
                 ),
-                "Languages": ", ".join(language.code for language in product.languages),
+                "Languages": ", ".join(language.code for language in product.active_languages),
                 "Marketing Image": product.card_image.url if product.card_image else "",
             })
 
@@ -198,7 +199,7 @@ def handle(self, *args, **options):
                 raise CommandError('No products found for the given criteria.')
             products_count = products.count()
 
-            logger.info(f'Fetched {products_count} courses from the database')
+            logger.info(f'Fetched {products_count} {product_type}s from the database')
             if output_csv:
                 with open(output_csv, 'w', newline='') as output_file:
                     output_writer = self.write_csv_header(output_file)

course_discovery/apps/course_metadata/management/commands/tests/test_populate_product_catalog.py

@@ -14,8 +14,9 @@
 from course_discovery.apps.course_metadata.models import Course, CourseType, ProgramType
 from course_discovery.apps.course_metadata.tests.factories import (
     CourseFactory, CourseRunFactory, CourseTypeFactory, DegreeFactory, OrganizationFactory, PartnerFactory,
-    ProgramTypeFactory, SeatFactory, SourceFactory
+    ProgramTypeFactory, SeatFactory, SourceFactory, SubjectFactory
 )
+from course_discovery.apps.ietf_language_tags.models import LanguageTag
 
 
 class PopulateProductCatalogCommandTests(TestCase):
@@ -218,6 +219,48 @@ def test_populate_product_catalog_excludes_non_marketable_degrees(self):
                 self.assertEqual(len(matching_rows), 1,
                                  f"Marketable degree '{marketable_degree.title}' should be in the CSV")
 
+    def test_populate_product_catalog_with_degrees_having_overrides(self):
+        """
+        Test that the populate_product_catalog command includes the overridden subjects and languages for degrees.
+        """
+        degree = DegreeFactory.create(
+            product_source=self.source,
+            partner=self.partner,
+            additional_metadata=None,
+            type=self.program_type,
+            status=ProgramStatus.Active,
+            marketing_slug="valid-marketing-slug",
+            title="Marketable Degree",
+            authoring_organizations=[self.organization],
+            card_image=factory.django.ImageField(),
+            primary_subject_override=SubjectFactory(name='Subject1'),
+            language_override=LanguageTag.objects.get(code='es'),
+        )
+
+        with NamedTemporaryFile() as output_csv:
+            call_command(
+                "populate_product_catalog",
+                product_type="degree",
+                output_csv=output_csv.name,
+                product_source="edx",
+                gspread_client_flag=False,
+            )
+
+            with open(output_csv.name, "r") as output_csv_file:
+                csv_reader = csv.DictReader(output_csv_file)
+                rows = list(csv_reader)
+
+                matching_rows = [
+                    row for row in rows if row["UUID"] == str(degree.uuid.hex)
+                ]
+                self.assertEqual(len(matching_rows), 1)
+
+                row = matching_rows[0]
+                self.assertEqual(row["UUID"], str(degree.uuid.hex))
+                self.assertEqual(row["Title"], degree.title)
+                self.assertIn(degree.primary_subject_override.name, row["Subjects"])
+                self.assertEqual(row["Languages"], degree.language_override.code)
+
     @mock.patch(
         "course_discovery.apps.course_metadata.management.commands.populate_product_catalog.Command.get_products"
     )
@@ -309,8 +352,8 @@ def test_get_transformed_data_for_degree(self):
                 org.logo_image.url for org in product_authoring_orgs if org.logo_image
             ),
             "Organizations Abbr": ", ".join(org.key for org in product_authoring_orgs),
-            "Languages": ", ".join(language.code for language in product.languages),
-            "Subjects": ", ".join(subject.name for subject in product.subjects),
+            "Languages": ", ".join(language.code for language in product.active_languages),
+            "Subjects": ", ".join(subject.name for subject in product.active_subjects),
             "Subjects Spanish": ", ".join(
                 translation.name for subject in product.subjects
                 for translation in subject.spanish_translations

course_discovery/apps/course_metadata/models.py

@@ -3518,6 +3518,16 @@ def course_run_statuses(self):
     def languages(self):
         return {course_run.language for course_run in self.course_runs if course_run.language is not None}
 
+    @property
+    def active_languages(self):
+        """
+        :return: The list of languages; It gives preference to the language_override over the languages
+        extracted from the course runs.
+        """
+        if self.language_override:
+            return {self.language_override}
+        return self.languages
+
     @property
     def transcript_languages(self):
         languages = [course_run.transcript_languages.all() for course_run in self.course_runs]
@@ -3540,6 +3550,25 @@ def subjects(self):
         common_others = [s for s, _ in Counter(course_subjects).most_common() if s not in common_primary]
         return common_primary + common_others
 
+    @property
+    def active_subjects(self):
+        """
+        :return: The list of subjects; the first subject should be the most common primary subjects of its courses,
+        other subjects should be collected and ranked by frequency among the courses.
+
+        Note: This method gives preference to the primary_subject_override over the primary subject of the courses.
+        """
+        subjects = self.subjects
+
+        if self.primary_subject_override:
+            if self.primary_subject_override not in subjects:
+                subjects = [self.primary_subject_override] + subjects
+            else:
+                subjects = [self.primary_subject_override] + \
+                    [subject for subject in subjects if subject != self.primary_subject_override]
+
+        return subjects
+
     @property
     def topics(self):
         """

course_discovery/apps/course_metadata/tests/test_models.py

@@ -3519,6 +3519,65 @@ def test_program_duration_override(self):
         self.program.program_duration_override = ''
         assert self.program.program_duration_override is not None
 
+    def test_active_subjects_with_no_override(self):
+        """
+        Test that active_subjects returns the subjects from the associated courses
+        when no primary_subject_override is set.
+        """
+
+        subject1 = SubjectFactory.create(name='Subject 1')
+        subject2 = SubjectFactory.create(name='Subject 2')
+        course1 = CourseFactory.create(subjects=[subject1])
+        course2 = CourseFactory.create(subjects=[subject2])
+        program = ProgramFactory.create(primary_subject_override=None, courses=[course1, course2])
+
+        expected_subjects = [subject1, subject2]
+        self.assertEqual(program.active_subjects, expected_subjects)
+
+    def test_active_subjects_with_primary_subject_override(self):
+        """
+        Test that active_subjects includes the primary_subject_override at the beginning
+        when it is set.
+        """
+        primary_subject_override = SubjectFactory.create(name='Primary Subject')
+        other_subject = SubjectFactory.create(name='Other Subject')
+        course = CourseFactory.create(subjects=[other_subject])
+
+        program = ProgramFactory.create(primary_subject_override=primary_subject_override, courses=[course])
+
+        expected_subjects = [primary_subject_override, other_subject]
+        self.assertEqual(program.active_subjects, expected_subjects)
+
+    def test_active_languages_with_no_override(self):
+        """
+        Test that active_languages returns the languages from the associated courses
+        when no language_override is set.
+        """
+
+        language_en = LanguageTag.objects.create(code='en', name='English')
+        language_fr = LanguageTag.objects.get(code='fr')
+
+        course_run1 = CourseRunFactory.create(language=language_en)
+        course_run2 = CourseRunFactory.create(language=language_fr)
+
+        program = ProgramFactory.create(language_override=None, courses=[course_run1.course, course_run2.course])
+
+        expected_languages = {language_en, language_fr}
+        self.assertEqual(program.active_languages, expected_languages)
+
+    def test_active_languages_with_language_override(self):
+        """
+        Test that active_languages returns the language_override when it is set.
+        """
+
+        language_es = LanguageTag.objects.get(code='es')
+        language_de = LanguageTag.objects.get(code='de')
+        course_run = CourseRunFactory.create(language=language_de)
+        program = ProgramFactory.create(language_override=language_es, courses=[course_run.course])
+
+        expected_languages = {language_es}
+        self.assertEqual(program.active_languages, expected_languages)
+
 
 class ProgramSubscriptionTests(TestCase):