Presenter variable unchanged by Ajax

richard

I am trying to add one to a presenter variable.

<?php
class TestPresenter extends BasePresenter
{

	/**
	 * Sign in form component factory.
	 * @return Nette\Application\UI\Form
	 */

	protected $testValue = 0;

	public function startup()
	{
	  parent::startup();
	}

    	public function renderDefault()
	{
	    $this->template->testValue = $this->testValue;
	}

	public function handleAddCount() {
	    $this->testValue++;
	    $this->invalidateControl('testSnippet');
	}
}
?>

and the template:

<?php
{block content}
    <a href="{link addCount!}" class="ajax">Add Count</a>
    {snippet testSnippet}
	{$testValue}
    {/snippet}
{/block}
?>

The $testValue won't change as expected. It is always 0 and handleAddCount() changes it to 1 only. I was studying the coffee machine tutorial for 0.9 and something similar worked there OK.

xxxObiWan

Shouldn`t the $testValue be persistent ?

/** @persistent */
protected $testValue = 0;

Last edited by xxxObiWan (2011-08-23 18:16)

richard

Yeah, /** @persistent */ works but only without ajax class on the link:

This adds one to the counter but is not ajax:

<?php
<a href="{link addCount!}">Add Count</a>
?>

This does the ajax spin but always prints 1, meaning the variable is not persistent…?

<?php
<a href="{link addCount!}" class="ajax">Add Count</a>
?>

Last edited by richard (2011-08-23 19:12)

na1k

How about

<?php
public function handleAddCount() {
   $this->testValue++;

   if ($this->isAjax()) {
      $this->invalidateControl('testSnippet');
   } else {
      $this->redirect('this');
   }
}
?>

(I have no idea why your code doesn't work, but I came around the same behavior once and the code above helped)

Patrik Votoček

Do you have ‘testSnippet’ in payload response? (May need invalidate some parent snippet(s))

richard

My fault, like usually. The link with action needs to be wrapped by snippet and invalidated…
Thanks for yor response.