vendor/symfony/form/Symfony/Component/Form/Extension/Core/DataMapper/PropertyPathMapper.php

   1 <?php
   2
   3 /*
   4  * This file is part of the Symfony package.
   5  *
   6  * (c) Fabien Potencier <fabien@symfony.com>
   7  *
   8  * For the full copyright and license information, please view the LICENSE
   9  * file that was distributed with this source code.
  10  */
  11
  12 namespace Symfony\Component\Form\Extension\Core\DataMapper;
  13
  14 use Symfony\Component\Form\DataMapperInterface;
  15 use Symfony\Component\Form\Exception\UnexpectedTypeException;
  16 use Symfony\Component\PropertyAccess\PropertyAccess;
  17 use Symfony\Component\PropertyAccess\PropertyAccessorInterface;
  18
  19 /**
  20  * A data mapper using property paths to read/write data.
  21  *
  22  * @author Bernhard Schussek <bschussek@gmail.com>
  23  */
  24 class PropertyPathMapper implements DataMapperInterface
  25 {
  26     /**
  27      * @var PropertyAccessorInterface
  28      */
  29     private $propertyAccessor;
  30
  31     /**
  32      * Creates a new property path mapper.
  33      *
  34      * @param PropertyAccessorInterface $propertyAccessor
  35      */
  36     public function __construct(PropertyAccessorInterface $propertyAccessor = null)
  37     {
  38         $this->propertyAccessor = $propertyAccessor ?: PropertyAccess::getPropertyAccessor();
  39     }
  40
  41     /**
  42      * {@inheritdoc}
  43      */
  44     public function mapDataToForms($data, $forms)
  45     {
  46         if (null === $data || array() === $data) {
  47             return;
  48         }
  49
  50         if (!is_array($data) && !is_object($data)) {
  51             throw new UnexpectedTypeException($data, 'object, array or empty');
  52         }
  53
  54         foreach ($forms as $form) {
  55             $propertyPath = $form->getPropertyPath();
  56             $config = $form->getConfig();
  57
  58             if (null !== $propertyPath && $config->getMapped()) {
  59                 $form->setData($this->propertyAccessor->getValue($data, $propertyPath));
  60             }
  61         }
  62     }
  63
  64     /**
  65      * {@inheritdoc}
  66      */
  67     public function mapFormsToData($forms, &$data)
  68     {
  69         if (null === $data) {
  70             return;
  71         }
  72
  73         if (!is_array($data) && !is_object($data)) {
  74             throw new UnexpectedTypeException($data, 'object, array or empty');
  75         }
  76
  77         foreach ($forms as $form) {
  78             $propertyPath = $form->getPropertyPath();
  79             $config = $form->getConfig();
  80
  81             // Write-back is disabled if the form is not synchronized (transformation failed)
  82             // and if the form is disabled (modification not allowed)
  83             if (null !== $propertyPath && $config->getMapped() && $form->isSynchronized() && !$form->isDisabled()) {
  84                 // If the data is identical to the value in $data, we are
  85                 // dealing with a reference
  86                 if (!is_object($data) || !$config->getByReference() || $form->getData() !== $this->propertyAccessor->getValue($data, $propertyPath)) {
  87                     $this->propertyAccessor->setValue($data, $propertyPath, $form->getData());
  88                 }
  89             }
  90         }
  91     }
  92 }