Added addColumn() function and rewrited migration v180

Author: POPSuL

models/migrations/migrations.go

@@ -891,3 +891,13 @@ func modifyColumn(x *xorm.Engine, tableName string, col *schemas.Column) error {
 	}
 	return nil
 }
+
+// addColumn adds new column to the specified table
+func addColumn(x *xorm.Engine, tableName string, col *schemas.Column) error {
+	alterSQL := x.Dialect().AddColumnSQL(tableName, col)
+	if _, err := x.Exec(alterSQL); err != nil {
+		log.Error("Add column %s to table %s failed: %v", col.Name, tableName, err)
+		return err
+	}
+	return nil
+}

models/migrations/v180.go

@@ -6,12 +6,16 @@ package migrations
 
 import (
 	"xorm.io/xorm"
+	"xorm.io/xorm/schemas"
 )
 
 func addWhitespaceBehaviorUserColumn(x *xorm.Engine) error {
-	type User struct {
-		WhitespaceBehavior bool `xorm:"NOT NULL DEFAULT false"`
-	}
-
-	return x.Sync2(new(User))
+	return addColumn(x, "user", &schemas.Column{
+		Name: "WhitespaceBehavior",
+		SQLType: schemas.SQLType{
+			Name: schemas.Text,
+		},
+		Default:  "",
+		Nullable: false,
+	})
 }