Fixed getting a single saved filter from db

pkg/db/fixtures/saved_filters.yml

@@ -1,5 +1,5 @@
 - id: 1
-  filters: ''
+  filters: '{"sort_by":null,"order_by":null,"filter_by":["start_date","end_date","due_date"],"filter_value":["2018-12-11T03:46:40+00:00","2018-12-13T11:20:01+00:00","2018-11-29T14:00:00+00:00"],"filter_comparator":["greater","less","greater"],"filter_concat":"","filter_include_nulls":false}'
   title: testfilter1
   owner_id: 1
   updated: 2020-09-08 15:13:12

pkg/integrations/task_collection_test.go

@@ -258,6 +258,29 @@ func TestTaskCollection(t *testing.T) {
 				assertHandlerErrorCode(t, err, models.ErrCodeInvalidTaskFilterValue)
 			})
 		})
+		t.Run("saved filter", func(t *testing.T) {
+			t.Run("date range", func(t *testing.T) {
+				rec, err := testHandler.testReadAllWithUser(
+					nil,
+					map[string]string{"list": "-2"}, // Actually a saved filter - contains the same filter arguments as the start and end date filter from above
+				)
+				assert.NoError(t, err)
+				assert.NotContains(t, rec.Body.String(), `task #1`)
+				assert.NotContains(t, rec.Body.String(), `task #2`)
+				assert.NotContains(t, rec.Body.String(), `task #3`)
+				assert.NotContains(t, rec.Body.String(), `task #4`)
+				assert.Contains(t, rec.Body.String(), `task #5`)
+				assert.Contains(t, rec.Body.String(), `task #6`)
+				assert.Contains(t, rec.Body.String(), `task #7`)
+				assert.Contains(t, rec.Body.String(), `task #8`)
+				assert.Contains(t, rec.Body.String(), `task #9`)
+				assert.NotContains(t, rec.Body.String(), `task #10`)
+				assert.NotContains(t, rec.Body.String(), `task #11`)
+				assert.NotContains(t, rec.Body.String(), `task #12`)
+				assert.NotContains(t, rec.Body.String(), `task #13`)
+				assert.NotContains(t, rec.Body.String(), `task #14`)
+			})
+		})
 	})
 
 	t.Run("ReadAll for all tasks", func(t *testing.T) {

pkg/models/saved_filters.go

@@ -106,7 +106,10 @@ func (s *SavedFilter) Create(auth web.Auth) error {
 }
 
 func getSavedFilterSimpleByID(id int64) (s *SavedFilter, err error) {
-	exists, err := x.Where("id = ?", id).Get(s)
+	s = &SavedFilter{}
+	exists, err := x.
+		Where("id = ?", id).
+		Get(s)
 	if err != nil {
 		return nil, err
 	}

pkg/models/saved_filters_test.go

@@ -46,7 +46,7 @@ func TestSavedFilter_Create(t *testing.T) {
 	sf := &SavedFilter{
 		Title:       "test",
 		Description: "Lorem Ipsum dolor sit amet",
-		Filters:     &TaskCollection{},
+		Filters:     &TaskCollection{}, // Empty filter
 	}
 
 	u := &user.User{ID: 1}