diff --git a/src/jiaowuxitong/common.go b/src/jiaowuxitong/common.go
index cb6fb42..9ac52d7 100644
--- a/src/jiaowuxitong/common.go
+++ b/src/jiaowuxitong/common.go
@@ -50,3 +50,5 @@ func (s Table) recordEventWithName(m *ice.Message, info string) {
 type Tables struct{ Table }
 
 func (s Tables) BeforeMigrate(m *ice.Message, arg ...string) {}
+
+func newTable() Table { return Table{Table: gonganxitong.NewTable(userClass{}, class{}, school{})} }
diff --git a/src/jiaowuxitong/model/model.go b/src/jiaowuxitong/model/model.go
index 4c732e2..50683b1 100644
--- a/src/jiaowuxitong/model/model.go
+++ b/src/jiaowuxitong/model/model.go
@@ -24,14 +24,14 @@ type UserClass struct {
 	db.ModelWithUID
 	UserUID  string `gorm:"type:char(32);index"`
 	ClassUID string `gorm:"type:char(32);index"`
-	Role     uint8
+	Role     uint8  `gorm:"default:0"`
 }
 type Class struct {
 	db.ModelWithUID
 	SchoolUID string `gorm:"type:char(32);index"`
 	Grade     string `gorm:"type:varchar(32)"`
 	Name      string `gorm:"type:varchar(64)"`
-	Type      uint8
+	Type      uint8  `gorm:"default:0"`
 }
 type School struct {
 	db.ModelWithUID
diff --git a/src/jiaowuxitong/userClass.go b/src/jiaowuxitong/userClass.go
index 51d03c5..61b6085 100644
--- a/src/jiaowuxitong/userClass.go
+++ b/src/jiaowuxitong/userClass.go
@@ -39,7 +39,7 @@ func (s userClass) List(m *ice.Message, arg ...string) {
 	s.SelectJoinCity(m)
 }
 
-func init() { ice.TeamCtxCmd(userClass{}) }
+func init() { ice.TeamCtxCmd(userClass{Table: newTable()}) }
 
 type UserClassRole int