migrate controllers

backend_v1/app/services/medias.go

@@ -86,3 +86,22 @@ func (m *medias) GetRelations(ctx context.Context, hash string) ([]*models.Media
 	tbl, query := models.MediaQuery.QueryContext(ctx)
 	return query.Where(tbl.Metas.KeyEq("parent_hash", hash)).Find()
 }
+
+// FindByID
+func (m *medias) FindByID(ctx context.Context, id int64) (*models.Media, error) {
+	tbl, query := models.MediaQuery.QueryContext(ctx)
+	item, err := query.Where(tbl.ID.Eq(id)).First()
+	if err != nil {
+		return nil, errors.Wrapf(err, "failed to find media by id: %d", id)
+	}
+	return item, nil
+}
+
+// Count
+func (m *medias) Count(ctx context.Context, conds ...gen.Condition) (int64, error) {
+	_, query := models.MediaQuery.QueryContext(ctx)
+	if len(conds) > 0 {
+		query = query.Where(conds...)
+	}
+	return query.Count()
+}