I have a controller that is called with AJAX (sends JSON data), so I don't use a view.
I need to use a personnal view helper to format my data, but in my controller.
Is that possible ?
Or maybe I am doing it wrong (maybe I should have a view, but how with JSON) ?
You can access any ViewHelper from the Controller by
$this->view->helpername(/*params*/);
// or
$helper = $this->view->getHelper('helpername');
// or
$broker = Zend_Controller_Action_HelperBroker::getStaticHelper('ViewRenderer');
$broker->getView()->helpername(/*params*/);
See Zend: How to use a custom function from a view helper in the controller?
However, you might be right that you are doing it wrong (funny pic btw), but I cannot really tell from your question. Please refine it as to why you need to call the view helper and what it is supposed to format.
Zend_Controller_Front::getInstance()->getParam('bootstrap')->getResource('view');
Just be sure that the returned view is the view you want. Because down the line, the view may get overwritten and on the controller you have a spank new view.
And all those values you setup on the view on the action helper and the like... before the controller is kicked in? All gone with the wind!
So test before assuming that if you get a view resource. it is really the same view resource you expect, and that all your vars are still there.
You may be surprised as i was!
You can create an instance of a Helper .. this will work in Controllers, Models and everywhere you need the Helper.
eg.
// create Instance
$serverUrl_helper = new Zend_View_Helper_ServerUrl();
// get the ServerUrl
$serverUrl = $serverUrl_helper->serverUrl();
Another approach is to use the ContextSwitch or AjaxContext action-helpers. This allows you to use a view-script from which you can then call your view-helper in the standard manner.
Just use action helpers, many of view helpers are available as action helpers too.
Or directly by using Zend_Date or sprintf.
Related
There is a controller :
use Phalcon\Mvc\Controller;
class ReferentielClientController extends Controller
{
public function indexAction(){
// moteur de template pour une View
$this->view->act_form = 'ReferentielClient/ajouterClient';
return $this->view->pick("client/listerClient");
}
public function ajouterClientAction(){
$this->view->action_form = 'ajouterClientExec';
return $this->view->pick("client/ajouterClient");
}
...
}
From a view I want to call the indexAction method of the controller ReferentielClientController. How to do that ?
Short answer: You can't.
You can't since indexAction is not a normal method, it's an action. Actions aren't called by anyone in the usual way that methods are, they are called with routes an url. Let me explain this a little bit further:
Using MVC, we have the following route using :
http://www.example.org/a/b/c
a is which we call module.
b is which we call controller.
And c is which we call action.
Index actions and default modules will not appear in the URL.
So, how to call functions from view? Better not to. Best way to proceed is to do everything in your controller and pass that info to the view. I.e.:
public function indexAction(){
$this->view->myInfo = $allMyInformationInOneObject;
}
And then, in the view (index.phtml):
<p>
<?php echo $this->myInfo ?>
</p>
Summary:
You don't need to call any controller function from the view, just give it that info from the controller.
Added info about redirection
OK, answering to your commentary. What you want is not to call that function but to redirect the browser to that action.
So, I'll suppose you have your route created in your router, if not, please, go to the Zend documentation about routing. It's highly recommended to create routes instead of using the URL itself.
I guess that you will not be able to use the normal redirecting using href on a button or such, so you will need to use the redirector helper. Since you are not in a controller, you are not able to use the helper by using:
$this->_helper->redirector->gotoUrl($url);
So you will need to instance the redirector like this:
$redirector = Zend_Controller_Action_HelperBroker::getStaticHelper('redirector');
$redirector->gotoUrl($url);
Being this $url, the URL given by your router, as you can read in the link above.
This can be done but I strongly recommend not to redirect from the view but from the controller. It would be good that all the logic remains in the controller.
I hope this helps!
Ok I found it : I set the href to point to the controller : Annuler
I am calling an action using $this->view->action to get some response. Inside that action I am using $this->_forward(). however it does not work when I call it with $this->view->action.
I am calling:
$result = $this->view->action('search-results', 'controller', 'mobule', $requestParams);
Inside searchResulsAction() I am using
$this->_forward("get-listings", "controller", "module", $requestParams);
but call is not going to getListingsAction()
First of and straight from the Zend View Helpers documentation:
Actions that result in a _forward() or redirect are considered invalid, and will return an empty string.
Second when you have $this->view->action you should be still inside a controller which means you should actually use $this->_forward('search-results', 'controller', 'mobule', $requestParams). Unless you need to remain in that controller and view and don't want to end up in the getListingsAction() and view?
If you need to remain in that controller/view you should probably restructure your code by extracting those pieces from the other controller into Action Helpers or View Helpers. If in fact you like to end up in the getListingsAction then a forward is what you should do.
Well in ZF1 there was the isAllowed view helper to check the ACL in the view.
But I can't find an equivalent of it for ZF2. The closest I got was the ZF2 navigation view helper, but the problem with that is that it requires a AbstractPage. I just want to throw a resource/privilege to it, example:
$this->allowed('resource', 'privilege');
Is there not such a view helper, or am I looking at this all the wrong way?
Well I couldn't find any view helper, neither got any response so I wrote my own view helper.
isAllowed view helper code
I wanted the functionalities of view files to run in controller file also.
For example, I wanted $this->escapeHtml() which runs in view file alone to run in controller through some means like $this->...->escapeHtml()
Is this possible? Kindly help.
You need to get the ViewHelperManager and extract the EscapeHtml helper. This is a one example how to do it from the controller:
$viewHelperManager = $this->getServiceLocator()->get('ViewHelperManager');
$escapeHtml = $viewHelperManager->get('escapeHtml'); // $escapeHtml can be called as function because of its __invoke method
$escapedVal = $escapeHtml('string');
Note that it is recommended to escape and display the output in the view scripts and not in the controller.
I call an action helper in one of my views using the following code
echo $this->action('foo', 'bar');
The fooAction in the barController does its thing and outputs a list of pages. However, the list has the layout in the output again, which is mightily irritating. If I disable the layout in the fooAction, this causes layout to be completely disabled on the live side, as well.
I'm vexed. I could just create a view helper, and there are many ways around this, but out of curiousity I was wondering if anyone had a solution to this.
From the ZF Reference Guide on Action ViewHelper
The API for the Action view helper follows that of most MVC components that invoke controller actions: action($action, $controller, $module = null, array $params = array()). $action and $controller are required; if no module is specified, the default module is assumed.
Modify your controller to accept a param that controls whether the action should disable the layout. When using the action helper, pass this control flag.
On a sidenote: using the Action ViewHelper is considered bad practise as it will go through the entire dispatch process again and this will slow down your app. If possible, try to access the model directly.