interface/modules/zend_modules/library/Zend/Mvc/View/Console/DefaultRenderingStrategy.php

   1 <?php
   2 /**
   3  * Zend Framework (http://framework.zend.com/)
   4  *
   5  * @link      http://github.com/zendframework/zf2 for the canonical source repository
   6  * @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
   7  * @license   http://framework.zend.com/license/new-bsd New BSD License
   8  */
   9
  10 namespace Zend\Mvc\View\Console;
  11
  12 use Zend\Console\Response as ConsoleResponse;
  13 use Zend\EventManager\AbstractListenerAggregate;
  14 use Zend\EventManager\EventManagerInterface;
  15 use Zend\EventManager\ListenerAggregateInterface;
  16 use Zend\Mvc\MvcEvent;
  17 use Zend\Stdlib\ResponseInterface as Response;
  18 use Zend\View\Model\ConsoleModel as ConsoleViewModel;
  19
  20 class DefaultRenderingStrategy extends AbstractListenerAggregate
  21 {
  22     /**
  23      * {@inheritDoc}
  24      */
  25     public function attach(EventManagerInterface $events)
  26     {
  27         $this->listeners[] = $events->attach(MvcEvent::EVENT_RENDER, array($this, 'render'), -10000);
  28     }
  29
  30     /**
  31      * Render the view
  32      *
  33      * @param  MvcEvent $e
  34      * @return Response
  35      */
  36     public function render(MvcEvent $e)
  37     {
  38         $result = $e->getResult();
  39         if ($result instanceof Response) {
  40             return $result; // the result is already rendered ...
  41         }
  42
  43         // marshal arguments
  44         $response  = $e->getResponse();
  45
  46         if (empty($result)) {
  47             // There is absolutely no result, so there's nothing to display.
  48             // We will return an empty response object
  49             return $response;
  50         }
  51
  52         // Collect results from child models
  53         $responseText = '';
  54         if ($result->hasChildren()) {
  55             foreach ($result->getChildren() as $child) {
  56                 // Do not use ::getResult() method here as we cannot be sure if
  57                 // children are also console models.
  58                 $responseText .= $child->getVariable(ConsoleViewModel::RESULT);
  59             }
  60         }
  61
  62         // Fetch result from primary model
  63         if ($result instanceof ConsoleViewModel) {
  64             $responseText .= $result->getResult();
  65         } else {
  66             $responseText .= $result->getVariable(ConsoleViewModel::RESULT);
  67         }
  68
  69         // Append console response to response object
  70         $response->setContent(
  71             $response->getContent() . $responseText
  72         );
  73
  74         // Pass on console-specific options
  75         if ($response instanceof ConsoleResponse
  76             && $result instanceof ConsoleViewModel
  77         ) {
  78             $errorLevel = $result->getErrorLevel();
  79             $response->setErrorLevel($errorLevel);
  80         }
  81
  82         return $response;
  83     }
  84 }