CODEWITHSUNDEEP
phpcakephp
Cameron
Cameron

Reputation: 28803

Use CakePHP $this inside PHP function

I have the following code:

function search_reset ()
{
    $search_query = $_GET['q'];

    if($search_query)
    {
        echo $this->Html->link('Clear', array('controller' => 'home', 'action' => 'index'), array('title' => 'Clear search query'));
    }   
}

But it causes the following error: Fatal error: Using $this when not in object context in /Users/cameron/Sites/smplr/app/views/search/index.ctp on line 9

I have two questions:

1.) What do I use INSTEAD of $this when inside a function? 2.) Where would I put a custom function like this? As I can't put it inside my controller as it's NOT an action.

Upvotes: 2

Views: 4176

Answers (3)

Chuck Burgess
Chuck Burgess

Reputation: 11574

@Cameron, Here is how you make this available site wide. First, create your custom helper and put it in the views/helpers/ directory as search_reset.php

<?php
class SearchResetHelper extends AppHelper {

  var $helpers = array('Html');  // include the HTML helper

  /**
  * @param string $query, This is the search query you will pass from the view
  */
  function reset_link($query = null) {
     if($query == null) {
        return;
     }    

    if(!empty($query)) {
        return $this->Html->link('Clear', array('controller' => 'home', 'action' => 'index'),  array('title' => 'Clear search query'));
    }
  }
}

Now, in your controller, make sure you include this in the $helpers array at the top:

var $helpers = array('SearchReset','any','other','helpers');

Now in your view, you simple call:

<?php echo $this->SearchReset->reset_link($_GET['q']); ?>

Then you will get the link as needed. It will work in any view as long as you call the helper in the controller.

Happy Coding!

Upvotes: 4

deceze
deceze

Reputation: 522135

I'm looking to make these functions accessible SITE-WIDE any ideas on how I could this?

Create your own Helper or add it as a method in the AppHelper.

Upvotes: 4

Jage
Jage

Reputation: 8086

Since it's in your ctp, you have access to it directly (without $this). You should just be able to write a function in your template and include as a global:

function search_reset ()
{
    global $html;
    $search_query = $_GET['q'];

    if($search_query)
    {
        echo $html->link('Clear', array('controller' => 'home', 'action' => 'index'), array('title' => 'Clear search query'));
    }   
}

To include html helper in your app controller:

class AppController extends Controller {    
    public function constructClasses(){
        //Apply App helpers and merge with controller helpers 
        $helpers = array('Html','Javascript' /*add whatever you want, these are global*/);
        //merge global, controller helpers
            $this->helpers = array_merge($this->helpers, $helpers); 
        parent::constructClasses(); 
    }
}

The above code will merge the helpers specified there with any other helpers specified in your controller. Then you can use $html helper in any ctp file.

Upvotes: -1

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