To activate zendframework plugin, set it with its config file in the [coordplugins] section of your application configuration file:

[coordplugins]
zendframework = zendframework.coord.ini.php

Copy the zendframework.coord.ini.php config file in the var/config/ directory of your application, from lib/jelix/plugins/coord/zendframework/zendframework.coord.ini.php.dist.

Then edit the zendframework.coord.ini.php file and fill the zendLibPath variable to tell the path to Zend Framework on your server.

Though zendframework plugin is activated in your application, Zend Framework is not loaded. Because there is no point including it at every step considering some of its libraries will be useful to you only in few occasions.

So you have to declare explicitly you want to use Zend Framework libraries for the actions you need.

You can do that using $pluginParamsclass variable in the controller.

Example with the index action:

public $pluginParams = array(
        'index' => array('zf.active'=>true)
);

Now you can use Zend Framework libraries with your index action, as in this example with Zend_Pdf :

function index() {
    $rep = $this->getResponse('binary');

    Zend_Loader::loadClass('Zend_Pdf');
    $pdf = new Zend_Pdf();
    $pdf->pages = ($page = $pdf->newPage('A4'));
    $font = Zend_Pdf_Font::fontWithName(Zend_Pdf_Font::FONT_HELVETICA);
    $page->setFont($font, 32);
    $page->drawText('Zend Framework with Jelix !', 120, 500);        
       
    $rep->content = $pdf->render();
    $rep->outputFileName = 'fooo.pdf';
    $rep->mimeType = 'application/pdf';

    return $rep;
}