Global view variables in Kohana

StackOverflow https://stackoverflow.com/questions/20220106

  •  05-08-2022
  •  | 
  •  

Вопрос

I'm trying to figure out how to use global View variables in Kohana properly. I have a Controller_Base class which provides a basic layout of a page:

abstract class Controller_Base extends Controller_Template {

  public $template = 'base';

  public function before () {
    parent::before();
    View::set_global('title' , '');
  }
}

My base.php view looks like this:

<!doctype html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title><?php echo $title; ?></title>
</head>
<body>
  <?php echo $content; ?>
</body>
</html>

And I also have a Controller_Welcome class inheriting from Controller_Base:

class Controller_Welcome extends Controller_Base {

  public function action_index () {
    $this->template->content = View::factory('welcome');
  }
}

welcome.php view looks like this:

<?php $title = 'Some title'; ?>
<h1>Hello, world!</h1>

The question is: how can I modify that global $title variable from welcome.php so in the end of the view chain base.php could get it? I don't want to put anything related to views into a controller.

Это было полезно?

Решение

You should be able to do it like this:

welcome.php view:

<?php View::set_global('title', 'Some title'); ?>
<h1>Hello, world!</h1>

Controller_Welcome class:

class Controller_Welcome extends Controller_Base {

    public function action_index () {
        $this->template->content = View::factory('welcome')->render();
    }
}

Note the call to render() - it is very important in order for this to work! In the normal execution flow, the base view will be evaluated first, followed by the inside. In order for the call to set_global to be made before the base is rendered, you must explicitly render the inside first.

Aside: If you are doing any significant templating stuff, you really should consider using Kostache with proper "ViewModel" classes, which are a much more elegant way to solve this problem.

Лицензировано под: CC-BY-SA с атрибуция
Не связан с StackOverflow
scroll top