Cakephp Override HtmlHelper::link

I want to setup HtmlHelper::link() method so the default options array have escape = false.开发者_开发问答

How can I achieve this without changing the core class?

OBS: I already sanitized form input, so I guess this will have no problem.

Thanks in advance.

Cake 2.1.5

I just implemented this and I wanted to point out a few things:

Your custom html helper should extend HTML helper (and don't forget to include the HTML helper class)

App::uses('HtmlHelper', 'View/Helper');
class CustomHtmlHelper extends HtmlHelper {
   //yadda yadda
}

Additionally, your call in AppController should not include the word Helper:

'Html'=> array('className' =>'CustomHtml'),

In Cake 2.0

Create your OwnHelper class containing a link method, which extends HtmlHelper, in AppController specify:

$helpers = array('Html' => array('className' => 'OwnHelper'));

via ADmad

Why don't you create your own custom helper and create a method that returns the HTMLHelper's link with the options set?

http://book.cakephp.org/view/102/Including-other-Helpers

class MyHelper extends AppHelper {
  var $helpers = array('html');

  function linkNoEscape($title, $url)
    $options = array(); //set custom options, e.g. no escape 

    return $this->Html->link($title, $url, $options);
  }
}

I'm never comfortable overriding methods higher up in the hierarchy (ie in AppHelper) because there is always a good chance you break other helpers that are dependent.

Hoping to be able to comment soon, instead of giving rubbish half answers!

Also relevant: I heard that CakePHP 2.0 will allow helpers, components etc to be aliased. Eg you want to change the output from HtmlHelper, you can replace it with your own version without changing all your view templates.

You could copy the original HTMLHelper from cake/libs/view/helpers to app/views/helpers and modify the link() method there.

another good practice that I think cakephp should implement that you also can implement is a simple Factory Pattern Helper. The following should be consider just psuedo not real code.

$this->Factory->getHelper('Html')->link();

instead of

$this->Html->link();

take the following for example

class FactoryHelper extends  Helper {
    public function getHelper($name) {
        if(Configure::read('Overrides.{$name}')) {
            return $this->{Configure::read('Overrides.{$name}')};
        }
        return (isset($this->{$name})?$this->{$name}:false);
    }

}

//Bootstrap is where you will set all your overrides
Configure::write('Overrides',array(
    'Html'=>'NewHtml'
));

//so now when you want to override any helper you can

So now in the bootstrap that you set to override Html Helper. Throughout your entire site, your new 'NewHtml' helper will be called instead of the traditional helper.

you can overwrite any helper method from AppHelper, so

class AppHelper extends Helper{
    function link($params, $go, $here){ ... code ...}
}