[fw-mvc] Passing parameters to view scripts

I want to be able to pass some parameters to a template I include. For
example, in a template I would like to include another template,
'header.phtml', and telling it to show a logo or not:

----------------------
<div id="top">
<?php
// doesn't work: no parameters allowed
$header = $this->render('header.phtml', array('showLogo' => true));
echo $header;
?>
</div>
<div>
some other content
</div>

----------------------

The default Zend_View doesn't allow that. I think it's not possible to do
that with placeholders either. So I coded my own solution, but I want to be
sure there is not an already existing solution I didn't see!

My solution:

-----------------
// I use my own view class
class My_View extends Zend_View
{
protected $_renderParameters = array();
protected function setRenderParameters($renderParameters)
{
$this->_renderParameters = $renderParameters;
}
protected function addRenderParameters($parameters)
{
$this->_renderParameters = array_merge($this->_renderParameters,
$parameters);
}
protected function getRenderParameters()
{
return $this->_renderParameters;
}

public function renderWithParams($fileName, $parameters = array())
{
$previousParameters = $this->getRenderParameters();

$this->addRenderParameters($parameters);

// call real render() method
$content = $this->render($fileName);

// reset parameters
$this->setRenderParameters($previousParameters);

return $content;
}
}

----------------------

And then I can have a template to include another template with parameters:

----------------------
<div id="top">
<?php
$header = $this->renderWithParams('header.phtml', array('showLogo'
=> true));
echo $header;
?>
</div>
<div>
some other content
</div>

----------------------

And in "header.phtml":

----------------------
<?php
$params = $this->getRenderParameters();

if(isset($params['showLogo']) && $params['showLogo'] === true)
{
?>
/img/logo.jpg
<?php
}
?>
<div>
some other content
</div>

----------------------

Did I reinvented the wheel? Is there something I didn't see?

Thanks in advance!

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