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