yii2.0框架场景的简单使用示例

public function rules()
{
  return [
    [['name','product_id'],'required','on'=>'add],
  ];
}

$model->scenario = "add";

$model = new User(['scenario' => 'add']);

$model->load(Yii::$app->request->post()) //加载值
$model->validate() //证规则

return $this->refresh();

public function scenarios()
{
  return [
    'default' => ['table_name', 'field_name'],//默认所有场景都可以操作
 'add' => ['age', 'name'],
 'update' => ['age'],
  ];
}