How to check if password and password_repeat match given password hashing?

Question

Yii

Good day.
Stuck at the moment of checking the re-entered password, taking into account hashing. Throws a mismatch.
More. Controller:

public function actionRegistration() {

        if (!Yii::$app->user->isGuest) {
            return $this->redirect('/');
        }

        $model = new User();

        if ($model->load(Yii::$app->request->post())) {
                if (!User::find()->where(['username' => $model->username])->limit(1)->all()) {
                    $model->setPassword($model->password);
                    if ($model->save()) {
                        $login = new LoginForm();
                        $login->username = $model->username;
                        $login->password = $model->password;
                        $login->login();
                        return $this->redirect('/page/contact');
                    } else {
                        Yii::$app->session->setFlash('er', "Произошла ошибка, введите данные повторно.");
                    }
                } else {
                    Yii::$app->session->setFlash('exist', "Пользователь с таким именем существует.");
                }
        }

        return $this->render('registration', compact('model'));
    }

In the User model.

public function rules()
    {
        return [
            ['username', 'required', 'message' => 'Поле является обязательным.'],
            ['password', 'required', 'message' => 'Поле является обязательным.'],
            ['username', 'unique', 'message' => 'Пользователь с таким логином существует.'],
            ['password', 'string', 'min' => 6],
            ['password_repeat', 'required'],
            ['password_repeat', 'compare', 'compareAttribute'=> 'password'],
            [['created_at', 'invite'],  'safe'],

        ];
    }

public function setPassword($password) {
        $this->password = Yii::$app->security->generatePasswordHash($password);
    }

    public function validatePassword($password)
    {
        return Yii::$app->security->validatePassword($password, $this->password);
    }

What I get as an output:
1) The password is hashed at the setPassword stage
2) The repeated password remains without hashing.
3) The comparison fails.
What stupid things I tried:
1) Hashed password_repeat and compared with password. It is logical that nothing happened.
2) Circled around validatePassword but didn't get anything. Looks like he's completely screwed up.

Answer 1

Good Morning.

public function validatePassword($password)
    {
        return Yii::$app->security->validatePassword($password, $this->password_hash);
    }

    public function setPassword($password) 
    {
        $this->password_hash = Yii::$app->security->generatePasswordHash($password);
    }

This can be moved to rules()

} else {
   Yii::$app->session->setFlash('exist', "Пользователь с таким именем существует.");
}

Accordingly, such verification is not necessary.

if (!User::find()->where(['username' => $model->username])->limit(1)->all()) {