PHP Notice – yii\base\ErrorException (Array to string conversion) Yii

Question

My data is succesfully entering into database. But, not redirecting to register.php page after inserting.

Showing Notice like:

PHP Notice – yii\\base\\ErrorException

Array to string conversion

But, I Noticed that as soon i'm replacing this line return $this->refresh($post); from SiteController.php, All working fine.

So, why this refresh($post) not working.. as it was working fine in other page.

I'm not getting how to resolve this issue. I need help. Please help me.

register.php

<?php
use yii\helpers\Html;
use yii\bootstrap\ActiveForm;
?>

<?php $form = ActiveForm::begin(['id' => 'register-form']); ?>
    <?= $form->field($model, 'fname')->textInput()->label('First Name') ?>
    <?= $form->field($model, 'lname')->textInput()->label('Last Name') ?>
    <?= $form->field($model, 'email')->textInput()->label('Email') ?>
    <?= $form->field($model, 'password')->passwordInput()->label('Password') ?>
    <div class="form-group">
        <?= Html::submitButton('Register', ['class' => 'btn btn-success', 'name' => 'register-button' ]) ?>
    </div>
<?php ActiveForm::end(); ?>

SiteController.php (Controller)

<?php
namespace app\controllers;

use Yii;
use yii\filters\AccessControl;
use yii\web\Controller;
use yii\filters\VerbFilter;

class SiteController extends Controller
{
    public function actionRegister()
        {
        $model = new RegisterForm();
        if ($model->load(Yii::$app->request->post())) 
        {
            $post = Yii::$app->request->post('RegisterForm');

            Yii::$app->db->createCommand("INSERT INTO members SET FirstName=:fname, LastName=:lname, EmailID=:email, Password=:password",
                        array(':fname' => $post['fname'],':lname'=>$post['lname'],':email'=>$post['email'],':password'=>$post['password']))->execute();

            Yii::$app->session->setFlash('registerFormSubmitted');

            return $this->refresh($post);
        }
        return $this->render('register', [
            'model' => $model,
        ]);
        }
}

RegisterForm.php (model)

<?php

namespace app\models;

use Yii;
use yii\base\Model;


class RegisterForm extends Model
{
    public $fname;
    public $lname;
    public $email;
    public $password;


    public function rules()
    {
        return [
            [['fname','lname', 'email', 'password'], 'required'],
            ['email', 'email'],
        ];
    }


    public function register()
    {
        if ($this->validate()) 
    {
        /*
                $form= new Form();
        $form->name=$this->name;
        $form->email=$this->email;
        $form->passowrd=$this->passowrd;
        $form->save();
        */
            return true;
        }
        return false;
    }

}

Here is Print screen of error coming.

Answer 1

You can easily see on the error screen you have shown us that $anchor being sent to the method named refresh() is an array, and you are trying to concatenate it as if it was a string. That is it.

Since the documentation on that screen says $anchor is expected to be a string in that method, the only reason left is the fact that you are sending it incorrect data.