[ENG-8052] Fixed FilterMixin issue with multiple values of notification subscription field (#11150)

Author: ihorsokhanexoft

api/base/filters.py

@@ -160,6 +160,8 @@ class FilterMixin:
     LIST_FIELDS = (ser.ListField,)
     RELATIONSHIP_FIELDS = (RelationshipField, TargetField)
 
+    MULTIPLE_VALUES_FIELDS = ['_id', 'guid._id', 'journal_id', 'moderation_state', 'event_name']
+
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
         if not self.serializer_class:
@@ -292,7 +294,7 @@ def parse_query_params(self, query_params):
                         query.get(key).update({
                             field_name: self._parse_date_param(field, source_field_name, op, value),
                         })
-                    elif not isinstance(value, int) and source_field_name in ['_id', 'guid._id', 'journal_id', 'moderation_state']:
+                    elif not isinstance(value, int) and source_field_name in self.MULTIPLE_VALUES_FIELDS:
                         query.get(key).update({
                             field_name: {
                                 'op': 'in',

api_tests/subscriptions/views/test_subscriptions_list.py

@@ -54,3 +54,9 @@ def test_cannot_post_patch_put_or_delete(self, app, url, user):
         assert patch_res.status_code == 405
         assert put_res.status_code == 405
         assert delete_res.status_code == 405
+
+    def test_multiple_values_filter(self, app, url, global_user_notification, user):
+        res = app.get(url + '?filter[event_name]=comments,global', auth=user.auth)
+        assert len(res.json['data']) == 2
+        for subscription in res.json['data']:
+            subscription['attributes']['event_name'] in ['global', 'comments']