php - How to pass param from controller to layout in YII2

Question

I want to send a parameter from controller to layout (i.e. main.php). But I am not able to get the param in main.php

I tried:

Controller Code:

$this->render('index',array('param' => $paramValue));

And this is how i was trying to get this in layout ie. main.php

1. $this->param (as in yii 1)
2. $param

But i am not able to get param value in layout. Can anyone tell me how to do this?

Answer 1

yiiaseView has special $params property.

For example it's used for building breadcrumbs in default generated CRUD code templates with Gii.

You can set it like this before rendering:

use Yii;

Yii::$app->view->params['customParam'] = 'customValue';

Inside a controller you can set it like this:

$this->view->params['customParam'] = 'customValue';

Then it will be available in views (including main layout):

/* @var $this yiiwebView */

echo $this->params['customParam'];

You can also find it in official guide.