/
FieldByClassEnhancer.php
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/
FieldByClassEnhancer.php
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<?php
/*
* This file is part of the Symfony CMF package.
*
* (c) 2011-2015 Symfony CMF
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Cmf\Component\Routing\Enhancer;
use Symfony\Component\HttpFoundation\Request;
/**
* This enhancer sets a field if not yet existing from the class of an object
* in another field.
*
* The comparison is done with instanceof to support proxy classes and such.
*
* Only works with RouteObjectInterface routes that can return a referenced
* content.
*
* @author David Buchmann
*/
class FieldByClassEnhancer implements RouteEnhancerInterface
{
/**
* @var string field for the source class
*/
protected $source;
/**
* @var string field to write hashmap lookup result into
*/
protected $target;
/**
* @var array containing the mapping between a class name and the target value
*/
protected $map;
/**
* @param string $source the field name of the class
* @param string $target the field name to set from the map
* @param array $map the map of class names to field values
*/
public function __construct($source, $target, $map)
{
$this->source = $source;
$this->target = $target;
$this->map = $map;
}
/**
* If the source field is instance of one of the entries in the map,
* target is set to the value of that map entry.
*
* {@inheritDoc}
*/
public function enhance(array $defaults, Request $request)
{
if (isset($defaults[$this->target])) {
// no need to do anything
return $defaults;
}
if (! isset($defaults[$this->source])) {
return $defaults;
}
// we need to loop over the array and do instanceof in case the content
// class extends the specified class
// i.e. phpcr-odm generates proxy class for the content.
foreach ($this->map as $class => $value) {
if ($defaults[$this->source] instanceof $class) {
// found a matching entry in the map
$defaults[$this->target] = $value;
return $defaults;
}
}
return $defaults;
}
}