some change

@@ -21,8 +21,12 @@ const (
 
 var (
 	dataBaseCache = &_dbCache{cache: make(map[string]*alias)}
-	drivers       = make(map[string]driverType)
-	dbBasers      = map[driverType]dbBaser{
+	drivers       = map[string]driverType{
+		"mysql":    DR_MySQL,
+		"postgres": DR_Postgres,
+		"sqlite3":  DR_Sqlite,
+	}
+	dbBasers = map[driverType]dbBaser{
 		DR_MySQL:    newdbBaseMysql(),
 		DR_Sqlite:   newdbBaseSqlite(),
 		DR_Oracle:   newdbBaseMysql(),
@@ -122,9 +126,3 @@ func RegisterDriver(name string, typ driverType) {
 		}
 	}
 }
-
-func init() {
-	RegisterDriver("mysql", DR_MySQL)
-	RegisterDriver("postgres", DR_Postgres)
-	RegisterDriver("sqlite3", DR_Sqlite)
-}

@@ -58,12 +58,19 @@ type Manager struct {
 // 	}
 // }
 
-func (m *Manager) Init(model Modeler) Modeler {
+func (m *Manager) Init(model Modeler, args ...interface{}) Modeler {
 	if m.inited {
 		return m.ins
 	}
 	m.inited = true
 	m.ins = model
+	skipInitial := false
+	if len(args) > 0 {
+		if b, ok := args[0].(bool); ok && b {
+			skipInitial = true
+		}
+	}
+	_ = skipInitial
 	return model
 }
 

@@ -27,6 +27,7 @@ type orm struct {
 }
 
 func (o *orm) Object(md Modeler) ObjectSeter {
+	md.Init(md, true)
 	name := md.GetTableName()
 	if mi, ok := modelCache.get(name); ok {
 		return newObject(o, mi, md)
@@ -38,8 +39,9 @@ func (o *orm) QueryTable(ptrStructOrTableName interface{}) QuerySeter {
 	name := ""
 	if table, ok := ptrStructOrTableName.(string); ok {
 		name = snakeString(table)
-	} else if m, ok := ptrStructOrTableName.(Modeler); ok {
-		name = m.GetTableName()
+	} else if md, ok := ptrStructOrTableName.(Modeler); ok {
+		md.Init(md, true)
+		name = md.GetTableName()
 	}
 	if mi, ok := modelCache.get(name); ok {
 		return newQuerySet(o, mi)

@@ -17,6 +17,7 @@ func (o *insertSet) Insert(md Modeler) (int64, error) {
 	if o.closed {
 		return 0, ErrStmtClosed
 	}
+	md.Init(md, true)
 	val := reflect.ValueOf(md)
 	ind := reflect.Indirect(val)
 	if val.Type() != o.mi.addrField.Type() {

@@ -14,7 +14,7 @@ type Fielder interface {
 }
 
 type Modeler interface {
-	Init(Modeler) Modeler
+	Init(Modeler, ...interface{}) Modeler
 	IsInited() bool
 	Clean() IFieldErrors
 	CleanFields(string) IFieldErrors