How not to save a field marked as required and unique in the model when editing?

Question

Yii

there is a User model
here is the rule

public function rules()
        {
            return [
                ['username', 'required'],
                //['username', 'match', 'pattern' => '#^(p{L}|p{Zs}|p{N}|,|-|_ | |)+$#i'],
                ['username', 'unique', 'targetClass' => self::className(), 'message' => 'This username has already been taken.'],
                ['username', 'string', 'min' => 2, 'max' => 255],
    
                ['email', 'required'],
                ['email', 'email'],
                ['email', 'unique', 'targetClass' => self::className(), 'message' => 'This email address has already been taken.'],
                ['email', 'string', 'max' => 255],
    
                ['status', 'integer'],
                ['status', 'default', 'value' => self::STATUS_ACTIVE],
                ['status', 'in', 'range' => array_keys(self::getStatusesArray())],
            ];
        }

there is a need to allow the user to change only the nickname, the question is, how in this case to disable email validation because the model is not validated due to the fact that either the email is not unique or it needs to be filled in?

Answer 1

use scripts. You can read more about them here

Answer 2

class UserModel extends ActiveRecord {
  const SCENARIO_UPDATE = 'update';

  public function scenarios(){
    return [
      self::SCENARIO_DEFAULT => ['username', 'email', 'password'],
      self::SCENARIO_UPDATE => ['username', 'password'],
    ];
  }
}

class UserController extends Controller {
  public function actionUpdate(){
    $model = new UserModel();
    $model->scenario = UserModel::SCENARIO_UPDATE;
    // ...
  }
}