How to create your own validation for certain conditions?

Question

Yii

I have 2 models, I need validation to check for certain conditions, I can’t implement it. Validation should check the amount that came in should not exceed the amount that is indicated for payment, so that there is no change. The deposit amount is specified by the user. In the controller, here's how I implemented

public function actionFinancy($oplata, $sum)
    {
        $validat = new DynamicModel(compact('oplata', 'sum'));
        $validat->addRule([['oplata', 'sum'], 'number', 'when' => function($oplata, $sum){
            return $oplata <= $sum;
    }])->validate();

        if ($validat->hasErrors()){
            return 'Сумма превышает всего суммы';
        }
    }
public function actionDraft($id)
    {
        $model = $this->findModel($id);
        $financy = new Financy();
        $validate = $this->actionFinancy($model->oplata, $financy->sum);

        if ($financy->load(Yii::$app->request->post()) && $financy->validate()){
            if (!$financy->save()){
                print_r($financy->getErrors());
            } else {
                $model->fact_oplata = $model->fact_oplata + $financy->sum;
                if ($model->oplata === $model->fact_oplata){
                    $model->action = 0;
                    $model->save();
                    Yii::$app->session->addFlash('update', 'Заказ был закрыт');
                }
            }
            return $this->redirect(['admin']);
        }

        return $this->renderAjax('draft', [
            'model' => $model,
            'financy' => $financy,
        ]);
    }

I just get the error Missing argument 2 for yii\base\DynamicModel::addRule(), called in C:\OpenServer\domains\crm\frontend\controllers\ZakazController.php on line 990 and
defined

Answer 1

You just have to read the documentation. The addRule method takes three arguments