code fix #941 caution: undertest

models/models.go

@@ -24,12 +24,22 @@ import (
 type Engine interface {
 	Delete(interface{}) (int64, error)
 	Exec(string, ...interface{}) (sql.Result, error)
+	Find(interface{}, ...interface{}) error
 	Get(interface{}) (bool, error)
 	Insert(...interface{}) (int64, error)
+	InsertOne(interface{}) (int64, error)
 	Id(interface{}) *xorm.Session
+	Sql(string, ...interface{}) *xorm.Session
 	Where(string, ...interface{}) *xorm.Session
 }
 
+func sessionRelease(sess *xorm.Session) {
+	if !sess.IsCommitedOrRollbacked {
+		sess.Rollback()
+	}
+	sess.Close()
+}
+
 var (
 	x         *xorm.Engine
 	tables    []interface{}