Form which includes different models in Yii2

Question

I'm new with Yii2 framework, so. I have created 4 tables in my database and generated 4 models according to the tables. Now I need to create 1 form, which includes information of all 4 tables.

Fe Sale table containts information of sale code and Category table contains information of category name . I need to create a form in which I could enter all the information and it would store in a different tables according to the information.

Here is my SiteController action :

public function actionCreate()
{
    $category = new Category();
    $sale = new Sale();

    if ($category && $sale->load(Yii::$app->request->post())) {
        if ($category && $sale->save()) {
            return $this->redirect(['create']);
        }
    }
    return $this->render('create', [
        'category' => $category,
        'sale' => $sale,
    ]);
} 

And here is my Create view:

<?php

use yii\helpers\Html;
use yii\widgets\ActiveForm;

/* @var $this yii\web\View */
/* @var $category app\models\Category */
/* @var $form ActiveForm */
?>
<div class="site-create">

<?php $form = ActiveForm::begin(); ?>

    <?= $form->field($category, 'name') ?>
    <?= $form->field($sale, 'code') ?>
    <div class="form-group">
        <?= Html::submitButton(Yii::t('app', 'Submit'), ['class' => 'btn 
btn-primary']) ?>
    </div>
<?php ActiveForm::end(); ?>

What I'm doing wrong? Thanks for any help

Answer 1

Change in SiteController action :

public function actionCreate()
{
    $category = new Category();
    $sale = new Sale();

    // load request parameters for both category and sale model
    if ($category->load(Yii::$app->request->post()) && $sale->load(Yii::$app->request->post())) {
        if ($category->save() && $sale->save()) { // saving both model
            return $this->redirect(['create']);
        }
    }
    return $this->render('create', [
        'category' => $category,
        'sale' => $sale,
    ]);
}