orm add Exist func

2013-10-12 06:57:14 +08:00
parent 3f91dfbca3
commit 5d55ca19be
2 changed files with 6 additions and 0 deletions
--- a/orm/orm_queryset.go
+++ b/orm/orm_queryset.go
@@ -114,6 +114,11 @@ func (o *querySet) Count() (int64, error) {
 	return o.orm.alias.DbBaser.Count(o.orm.db, o, o.mi, o.cond, o.orm.alias.TZ)
 }

+func (o *querySet) Exist() bool {
+	cnt, _ := o.orm.alias.DbBaser.Count(o.orm.db, o, o.mi, o.cond, o.orm.alias.TZ)
+	return cnt > 0
+}
+
 func (o *querySet) Update(values Params) (int64, error) {
 	return o.orm.alias.DbBaser.UpdateBatch(o.orm.db, o, o.mi, o.cond, values, o.orm.alias.TZ)
 }