Added the transformer

core/lib/Thelia/Coupon/ExpirationDateTransformer.php

@@ -0,0 +1,105 @@
+<?php
+/*************************************************************************************/
+/*      This file is part of the Thelia package.                                     */
+/*                                                                                   */
+/*      Copyright (c) OpenStudio                                                     */
+/*      email : dev@thelia.net                                                       */
+/*      web : http://www.thelia.net                                                  */
+/*                                                                                   */
+/*      For the full copyright and license information, please view the LICENSE.txt  */
+/*      file that was distributed with this source code.                             */
+/*************************************************************************************/
+
+namespace Thelia\Coupon;
+
+use Symfony\Component\Form\DataTransformerInterface;
+use Symfony\Component\Form\Exception\TransformationFailedException;
+use Thelia\Model\LangQuery;
+
+/**
+ * @author Franck Allimant <franck@cqfdev.fr>
+ *
+ * Creation date: 02/05/14 15:20
+ */
+class ExpirationDateTransformer implements DataTransformerInterface
+{
+
+    /**
+     * Transforms a value from the original representation to a transformed representation.
+     *
+     * This method is called on two occasions inside a form field:
+     *
+     * 1. When the form field is initialized with the data attached from the datasource (object or array).
+     * 2. When data from a request is bound using {@link Form::bind()} to transform the new input data
+     *    back into the renderable format. For example if you have a date field and bind '2009-10-10' onto
+     *    it you might accept this value because its easily parsed, but the transformer still writes back
+     *    "2009/10/10" onto the form field (for further displaying or other purposes).
+     *
+     * This method must be able to deal with empty values. Usually this will
+     * be NULL, but depending on your implementation other empty values are
+     * possible as well (such as empty strings). The reasoning behind this is
+     * that value transformers must be chainable. If the transform() method
+     * of the first value transformer outputs NULL, the second value transformer
+     * must be able to process that value.
+     *
+     * By convention, transform() should return an empty string if NULL is
+     * passed.
+     *
+     * @param mixed $value The value in the original representation
+     *
+     * @return mixed The value in the transformed representation
+     *
+     * @throws TransformationFailedException When the transformation fails.
+     */
+    public function transform($value)
+    {
+        if (empty($value)) return '';
+
+        // Get the default language
+        $lang = LangQuery::create()->findOneByByDefault(1);
+
+        if (false !== $dt = \DateTime::createFromFormat($lang->getDateFormat(), $value)) {
+            return $dt->format("Y-m-d");
+        }
+
+        throw new TransformationFailedException(sprintf('Failed to transform "%s" using format "%s"', $value, $lang->getDateFormat()));
+    }
+
+    /**
+     * Transforms a value from the transformed representation to its original
+     * representation.
+     *
+     * This method is called when {@link Form::bind()} is called to transform the requests tainted data
+     * into an acceptable format for your data processing/model layer.
+     *
+     * This method must be able to deal with empty values. Usually this will
+     * be an empty string, but depending on your implementation other empty
+     * values are possible as well (such as empty strings). The reasoning behind
+     * this is that value transformers must be chainable. If the
+     * reverseTransform() method of the first value transformer outputs an
+     * empty string, the second value transformer must be able to process that
+     * value.
+     *
+     * By convention, reverseTransform() should return NULL if an empty string
+     * is passed.
+     *
+     * @param mixed $value The value in the transformed representation
+     *
+     * @return mixed The value in the original representation
+     *
+     * @throws TransformationFailedException When the transformation fails.
+     */
+    public function reverseTransform($value)
+    {
+        if (empty($value)) return '';
+
+        // Get the default language
+        $lang = LangQuery::create()->findOneByByDefault(1);
+
+        if (false !== $dt = \DateTime::createFromFormat('Y-m-d', $value)) {
+            return $dt->format($lang->getDateFormat());
+        }
+
+        throw new TransformationFailedException(sprintf('Failed to reverse transform "%s" using format "%s"', $value, $lang->getDateFormat()));
+    }
+}