How to use a helper function in a controller?

问题

I wrote some function in app_helper file. now i need to call that function in my controller how i can do this in CAKEPHP

回答1:

You can't.*

If your functions are so universal as to be used outside of views, create them in bootstrap.php or make a custom library/class in the libs/ directory.

* _{You can load anything anywhere using App::import('Helper', 'NameOfHelper') or ClassRegistry::init, but you really shouldn't. The point of MVC separation is to keep your app well organized.}

回答2:

App::uses('HtmlHelper', 'View/Helper');
$yourTmpHtmlHelper = new HtmlHelper(new View());

Is finally the version which works with Cakephp 2.3

回答3:

App::import('Helper', 'Forum.Common');
    $commonHelper = new CommonHelper(new View())

回答4:

You can use the helper in Controller as bellow

App::uses('YourHelper', 'View/Helper');

class yourController extends AppController {

public function index(){
    $yourHelper = new YourHelper(new View());
    $yourHelper->yourMethod();
  }

}

回答5:

If you want to use some common functions in all of your controllers like the helper does for views, you must use Components http://book.cakephp.org/2.0/en/controllers/components.html

rather using App::import('Helper', 'NameOfHelper'), this keeps the MVC standard correct and your app well organized.

回答6:

you can call helper function this way. suppose you helper is DemoHelp and call to helper function call_function() then you can use this.

App::import('Helper', 'DemoHelp');
$DemoHelp = new DemoHelpHelper();

$DemoHelp->call_function()

回答7:

You can use Component, they are stored in Controller/Component/

For example if you have Controller/Component/SomeComponent.php and want call it on the fly in single action inside controller:

$this->SomeComponent = $this->Components->load('SomeComponent');
$this->SomeComponent->someFunction();

来源：https://stackoverflow.com/questions/6450519/how-to-use-a-helper-function-in-a-controller

标签

cakephp

cakephp-1.3