skip yii2 unique validation on update action if new value equals to prev value

Question

Because of unique validator get error on update action ('this username is already taken') i wanna validate username on update action when new username value not equals to prev value, it's my rule:

        [['username'], 'unique', 'on'=>'update', 'when' => function($model){
                return static::getOldUsername($model->id) !== $model->username;
            }
        ],

and it's my function to get prev username value:

public static function getOldUsername($id)
{
    return static::findIdentity($id)->username;
}

but it doesn't work, i think $model->getId() return nothing because of with static id (e.g: 23) its work.

        [['username'], 'unique', 'on'=>'update', 'when' => function($model){
                return static::getOldUsername(23) !== $model->username;
            }
        ],

how can i get model id? or if you have other ways to skip yii2 unique validation on update action if new value equals to prev value, please explain it.

thanks in advance

score 6 · Answer 1 · edited Mar 22 '17 at 12:30

6

I think you can use $user->isAttributeChanged('username');

Example (I'm not testing this code):

[['username'], 'unique', 'on'=>'update', 'when' => function($model){
    return $model->isAttributeChanged('username')
}],

edited Mar 22 '17 at 12:30

RavatSinh Sisodiya

1,538
1
18
38

answered Mar 22 '17 at 08:12

user3265030

184
1
3

score 2 · Answer 2 · answered Nov 08 '16 at 12:43

2

i should say that my code is right and it works good now, error comes from a ,. Oops!!

I hope this question be useful for other viewers, thanks.

answered Nov 08 '16 at 12:43

SADi

195
1
12

very useful :-) – msoa Dec 18 '16 at 21:12

score 0 · Answer 3 · edited Mar 27 '18 at 14:11

0

[
    'login', 'unique', 
    'targetAttribute' => ['login'], 
    'filter' => ['!=', 'id', Yii::$app->request->get('id')], 
    'targetClass' => '\app\models\User', 
    'message' => 'This login has already been taken.',
],

edited Mar 27 '18 at 14:11

Leonardo Alves Machado

2,481
7
31
43

answered Mar 27 '18 at 13:38

user9558633

1

2

While this code may answer the question, providing additional context regarding **how** and/or **why** it solves the problem would improve the answer's long-term value. – Alexander Mar 27 '18 at 14:12

skip yii2 unique validation on update action if new value equals to prev value

3 Answers3