🐛 [BUG] Prevent objects from being returned several times in APIv2 by…

… filtering on ManyToMany (refs #4448)

docs/changelog.rst

@@ -15,6 +15,10 @@ CHANGELOG
 - Move Treks' accessibility pictures into the attached files tab (refs #2967)
 - Removes the display of an object's structure in its properties tab title
 
+**Bug fixes**
+
+- Prevent objects from being returned several times in APIv2 by filtering on ManyToMany (#4448)
+
 **Documentation**
 
 - Update theme color

geotrek/api/tests/test_v2.py

@@ -1031,6 +1031,13 @@ def test_trek_theme_filter(self):
         json_response = response.json()
         self.assertEqual(len(json_response.get('results')), 0)
 
+        # Test result is not duplicated
+        self.parent.themes.add(self.theme3)
+        response = self.get_trek_list({'themes': f"{self.theme2.pk},{self.theme3.pk}"})
+        self.assertEqual(response.status_code, 200)
+        json_response = response.json()
+        self.assertEqual(len(json_response.get('results')), 1)
+
     def test_trek_portal_filter(self):
         response = self.get_trek_list({'portals': self.portal.pk})
         #  test response code

geotrek/api/v2/filters.py

@@ -743,7 +743,7 @@ def filter_queryset(self, request, queryset, view):
                 Q(name__icontains=q) | Q(description__icontains=q)
                 | Q(description_teaser__icontains=q) | Q(ambiance__icontains=q)
             )
-        return qs
+        return qs.distinct()
 
     def get_schema_fields(self, view):
         return (