CraftCMS 3 - Custom model validation

craft_custom_model_validation.php

<?php

    // CraftCMS3 is using Yii2 framework which doesn't have a decoupled validator class.
    // If you create a dummy model filled with the attributes coming from a POST request
    // you can use custom validations for the incoming attributes.

    $testPostData = [
        'name' => 'Tamas Erdelyi',
        'email' => '[email protected]'
    ];

    $model = new TestModel();
    $model->setAttributes($testPostData);

    if ($model->validate()) {
        var_dump($model->getAttributes());
    } else {
        var_dump($model->getErrors());
    }


    class TestModel extends \craft\base\Model
    {
        public $name;
        public $email;
        
        public function rules()
        {
            return [
                [['name', 'email'], 'required'],
                ['email', 'email'],
            ];
        }
    }