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lib/symfony/addon/propel/validator/sfPropelUniqueValidator.class.php

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+<?php
+
+/*
+ * This file is part of the symfony package.
+ * (c) 2004-2006 Fabien Potencier <fabien.potencier@symfony-project.com>
+ * 
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * sfPropelUniqueValidator validates that the uniqueness of a column.
+ * This validator only works for single column primary key.
+ *
+ * <b>Required parameters:</b>
+ *
+ * # <b>class</b>        - [none]               - Propel class name.
+ * # <b>column</b>       - [none]               - Propel column name.
+ *
+ * <b>Optional parameters:</b>
+ *
+ * # <b>unique_error</b> - [Uniqueness error]   - An error message to use when
+ *                                                the value for this column already
+ *                                                exists in the database.
+ *
+ * @package    symfony
+ * @subpackage validator
+ * @author     Fabien Potencier <fabien.potencier@symfony-project.com>
+ * @author     Fédéric Coelho <frederic.coelho@symfony-project.com>
+ * @version    SVN: $Id: sfPropelUniqueValidator.class.php 2995 2006-12-09 18:01:32Z fabien $
+ */
+class sfPropelUniqueValidator extends sfValidator
+{
+  public function execute(&$value, &$error)
+  {
+    $className  = $this->getParameter('class').'Peer';
+    $columnName = call_user_func(array($className, 'translateFieldName'), $this->getParameter('column'), BasePeer::TYPE_FIELDNAME, BasePeer::TYPE_COLNAME);
+
+    $c = new Criteria();
+    $c->add($columnName, $value);
+    $object = call_user_func(array($className, 'doSelectOne'), $c);
+
+    if ($object)
+    {
+      $tableMap = call_user_func(array($className, 'getTableMap'));
+      foreach ($tableMap->getColumns() as $column)
+      {
+        if (!$column->isPrimaryKey())
+        {
+          continue;
+        }
+
+        $method = 'get'.$column->getPhpName();
+        $primaryKey = call_user_func(array($className, 'translateFieldName'), $column->getPhpName(), BasePeer::TYPE_PHPNAME, BasePeer::TYPE_FIELDNAME);
+        if ($object->$method() != $this->getContext()->getRequest()->getParameter($primaryKey))
+        {
+          $error = $this->getParameter('unique_error');
+
+          return false;
+        }
+      }
+    }
+
+    return true;
+  }
+
+  /**
+   * Initialize this validator.
+   *
+   * @param sfContext The current application context.
+   * @param array   An associative array of initialization parameters.
+   *
+   * @return bool true, if initialization completes successfully, otherwise false.
+   */
+  public function initialize($context, $parameters = null)
+  {
+    // initialize parent
+    parent::initialize($context);
+
+    // set defaults
+    $this->setParameter('unique_error', 'Uniqueness error');
+
+    $this->getParameterHolder()->add($parameters);
+
+    // check parameters
+    if (!$this->getParameter('class'))
+    {
+      throw new sfValidatorException('The "class" parameter is mandatory for the sfPropelUniqueValidator validator.');
+    }
+
+    if (!$this->getParameter('column'))
+    {
+      throw new sfValidatorException('The "column" parameter is mandatory for the sfPropelUniqueValidator validator.');
+    }
+
+    return true;
+  }
+}