Yii2模型验证

Question

I am working on Yii2, however I have a model this model have some attributes, some are required on insert/create mode and some are required on update mode, let say mode = scenario, So I created a Form model with 2 scenarios insert and update, then I set validation rules for the attributes as the scenario, the question is: shall I define the scenarios in both models(Active Record and Form Model)?

Thank you in advance.

Answer 1

Scenarios should be defined in your model ..

and you should set the scenario youwant use in your related action

    public function  actionUpdate(){

    ....

    $model->scenario = 'update';
    ...

Answer 2

    ActiveRecord read from the database has the "update" scenario, while a new record has the "insert" scenario.
    $modelA = User::model()->findByPk(1); // $model->scenario = 'update'
    $modelB = new User();                 // $model->scenario = 'insert'
    $modelB->scenario = 'light';          // custom scenario
    if ($modelB->validate()) {            // will only apply rules of the "light" scenario
     ...............
     ..............
    }

Answer 3

You can do so, in your model:

class YourModel extends \yii\db\ActiveRecord
{
    const SCENARIO_CREATE = 'create';
    const SCENARIO_UPDATE = 'update';

...
public function scenarios(){
    $scenarios = parent::scenarios();
    $scenarios[static::SCENARIO_CREATE] = ['field_1', 'field_2'];
    $scenarios[static::SCENARIO_UPDATE] = ['field_1', 'field_3'];
    return $scenarios;
}

...
}

In Your conttroller:

class YourController extends Controller {

...

    public function actionCreate(){
        $model = new YourModel()

        $model->scenario = YourModel::SCENARIO_CREATE;

        if($model->validate()){ // validate fields specifed in YourModel SCENARIO_CREATE
            ...
        }

        ...
    }

...

    public function actionUpdate(){
        $model = new YourModel()

        $model->scenario = YourModel::SCENARIO_UPDATE;

        if($model->validate()){ // validate fields specifed in YourModel SCENARIO_UPDATE 
            ...
        }

        ...
    }

}

If my answer helpful, please put a tick))