Yii2 Automatically Login after Registration - yii2

Question

I'm creating a website using yii2 framework. I have a problem in registration. I have a modal in home and it contains the sign up form. Now when i trying to register, Yes it saved successful but it only stay in the modal. Now i want is after registering it will automatically login.
This is my sign up form_:
<div class="row">
<div class="col-lg-12">
<?php yii\widgets\Pjax::begin(['id' => 'sign-up']) ?>
<?php $form = ActiveForm::begin(['id' => 'form-signup', 'options' => ['data-pjax' => true]]); ?>
<div class="row">
<div class="col-sm-6">
<?= $form->field($model, 'role')->dropDownList(['2' => 'User', '1' => 'Encoder', '3' => 'Admin']) ?>
<?= $form->field($model, 'username')->textInput(['placeholder' => 'Username....']) ?>
<?= $form->field($model, 'email')->textInput(['placeholder' => 'Email....']) ?>
<?= $form->field($model, 'password')->passwordInput(['placeholder' => 'Password.....']) ?>
</div>
<div class="col-sm-6">
<?= $form->field($model, 'confirmPassword')->passwordInput(['placeholder' => 'Confirm Password.....']) ?>
<?= $form->field($model, 'first_name')->textInput(['placeholder' => 'First Name....']) ?>
<?= $form->field($model, 'middle_name')->textInput(['placeholder' => 'Middle Name....']) ?>
<?= $form->field($model, 'last_name')->textInput(['placeholder' => 'Last Name....']) ?>
</div>
</div>
<center>
<?= $form->field($model, 'verifyCode')->widget(Captcha::className()) ?>
</center>
<div class="form-group">
<?= Html::submitButton('Signup', ['class' => 'btn btn-primary', 'name' => 'signup-button', 'style' => 'width: 100%; padding: 10px;']) ?>
</div>
<?php ActiveForm::end(); ?>
<?php yii\widgets\Pjax::end() ?>
</div>
</div>
This is my model:
class SignupForm extends Model
{
public $role;
public $username;
public $email;
public $password;
public $first_name;
public $middle_name;
public $last_name;
public $confirmPassword;
public $verifyCode;
public function rules()
{
return [
['role', 'required'],
['username', 'trim'],
['username', 'required'],
['username', 'unique', 'targetClass' => '\common\models\User', 'message' => 'This username has already been taken.'],
['username', 'string', 'min' => 2, 'max' => 20],
['email', 'trim'],
['email', 'required'],
['email', 'email'],
['email', 'string', 'max' => 30],
['email', 'unique', 'targetClass' => '\common\models\User', 'message' => 'This email address has already been taken.'],
['password', 'required'],
['password', 'string', 'min' => 6],
['first_name', 'trim'],
['first_name', 'required'],
['middle_name', 'trim'],
['middle_name', 'required'],
['last_name', 'trim'],
['last_name', 'required'],
['verifyCode', 'captcha'],
['verifyCode', 'required'],
[['confirmPassword'], 'compare', 'compareAttribute' => 'password', 'message' => 'Passwords do not match.'],
];
}
/**
* Signs user up.
*
* #return User|null the saved model or null if saving fails
*/
public function signup()
{
if (!$this->validate()) {
return null;
}
$user = new User();
$user->username = $this->username;
$user->email = $this->email;
$user->setPassword($this->password);
$user->generateAuthKey();
$user->role = $this->role;
$user->first_name = $this->first_name;
$user->middle_name = $this->middle_name;
$user->last_name = $this->last_name;
return $user->save() ? $user : null;
}
}
This is my controller:
public function actionSignup()
{
$model = new SignupForm();
if ($model->load(Yii::$app->request->post())) {
if ($user = $model->signup()) {
if (Yii::$app->getUser()->login($user)) {
return $this->goHome();
}
}
}
return $this->renderAjax('signup', [
'model' => $model,
]);
}
I don't have any ideas, I think my codes is correct but i don't know why is not working.
UPDATED
When i clicked the button signup it stay only in the modal and when i clicked it again the button the validations is working. It means it saves to database but not automatically login.

Answer 1

you should get the user identity for login
public function actionSignup()
{
$model = new SignupForm();
if ($model->load(Yii::$app->request->post())) {
if ($user = $model->signup()) {
$identity = User::findOne(['username' => $model->$username]);
if (Yii::$app->user->login($identity)) {
return $this->goHome();
}
}
}
return $this->renderAjax('signup', [
'model' => $model,
]);
}
see this for more http://www.yiiframework.com/doc-2.0/guide-security-authentication.html
http://www.yiiframework.com/doc-2.0/yii-web-user.html

Answer 2

I have used below code and its working for me . Its also a standard code for YII2 .Controller Action Code :
public function actionSignup()
{
$model = new SignupForm();
if ($model->load(Yii::$app->request->post())) {
if ($user = $model->signup()) {
$model= \common\models\User::findOne([$user->id]); //you need to get complete model again and pass it to login function
if (Yii::$app->user->login($model) {
return $this->goHome();
}
}
}
return $this->renderAjax('signup', [
'model' => $model,
]);
}

Answer 3

After couple minutes of step by step debug - it works well
//Signup
public function actionSignup()
{
$model = new SignupForm();
if ($model->load(Yii::$app->request->post()) && $model->signup()) { /*Save
to DB first*/
$genmail = $model->email; //get model email value
$identity = User::findOne(['email' => $genmail]); //find user by email
if (Yii::$app->user->login($identity)) { // login user
return $this->redirect('account'); // show accaount page
}
}
return $this->render('signup', [
'model' => $model,
]);
}