Optimize Scenarios for yii2

Tutorials

2.0

model, model validation, model,validation rules

One way to avoid this disorder is to encapsulate the information defined for the scenarios and to have a single point of customization.

For this we need to create constants for each scenario, note: once you define a scenario, you will need to use scenarios for any database edition that uses this model.

**In model**

```php
class MyModel extends \yii\db\ActiveRecord { const SCENARIOCRIEATE = 'scenariocrieate';
const SCENARIOUPDATE = 'scenarioupdate';return [
self::SCENARIOCRIEATE => ['user_id', 'name', 'desc', 'published','date_create'],
self::SCENARIOUPDATE => ['user_id', 'name', 'desc', 'date_update'],
];$allscenarios = $this->getCustomScenarios();
// published not required
$allscenarios[self::SCENARIOCRIEATE] = array_diff($allscenarios[self::SCENARIOCRIEATE], ['published']);
return $allscenarios;$allscenarios = $this->ModifyRequired();
return [
[$allscenarios[self::SCENARIOCRIEATE], 'required', 'on' => self::SCENARIOCRIEATE],
[$allscenarios[self::SCENARIOUPDATE], 'required', 'on' => self::SCENARIOUPDATE],
[['user_id'], 'integer'],```

O gGetCustomScenarios será usado para quando for necessário fazer modificações de colunawill be used for when you need to make column modifications. OThe ModifyRequired é utilizado para remover do required, pois neste momento será utilizadois used to remove from the required, because at this point will be used getCustomScenarios para ofor the save. **In Controller**
```php
public function actionIndex() { $model = new MyModel; $model->scenario = 'scenariocrieate'; if ($model->load(\Yii::$app->request->post())){        // get all scenarios
 
        $allscenarios=$model->getCustomScenarios(); // force my columns if($model->save(true, $allscenarios[$this->scenario])){
//return true
}
}
}
```