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How do you create and use custom Yii components? - Code Stap
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How do you create and use custom Yii components?

How do you create and use custom Yii components?

 

Creating and using custom components in Yii allows you to encapsulate reusable functionality that can be shared across your application. Here’s a concise guide to creating and using custom Yii components:

Minimal Steps to Create and Use Custom Yii Components

Create a Custom Component:

  • Create a new PHP file for your custom component in the components directory (e.g., components/MyComponent.php).

Example: MyComponent.php

Example

<?php
namespace app\components;

use Yii;
use yii\base\Component;

class MyComponent extends Component
{
    public $property;

    public function myMethod()
    {
        return "Hello from MyComponent! Property value: " . $this->property;
    }
}
?>

Register the Component in Configuration:

  • Register your component in the config/web.php file under the components section.

Example

<?php
'components' => [
    'myComponent' => [
        'class' => 'app\components\MyComponent',
        'property' => 'some value', // Initialize properties if needed
    ],
],
?>

Use the Custom Component:

  • Access and use your component in controllers, views, or anywhere within your application using Yii::$app->myComponent.

Example: Using in a Controller

Example

<?php
namespace app\controllers;

use yii\web\Controller;

class SiteController extends Controller
{
    public function actionIndex()
    {
        $message = Yii::$app->myComponent->myMethod();
        return $this->render('index', ['message' => $message]);
    }
}
?>

Call the Component Method in a View:

  • You can also access the component directly in your view file.

Example: views/site/index.php

Example

<?php
<h1>My Custom Component</h1>
<p><?= Yii::$app->myComponent->myMethod(); ?></p>
?>

Test Your Component:

  • Run your application and access the appropriate route to see the output of your custom component in action.

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