form : Add redirectIfError method to simplify the code in index files

$form = new \form ();
      $values = $form->values ();
      $errors = $spaceObj->verify ($values);
      $form->redirectIfError ($values, $errors, $route, "/admin/space/");
      $spaceuuid = $spaceObj->spaceCreateConceal ($values["spacename"]);
      $route->redirect ("/admin/space/");


git-svn-id: https://svn.fournier38.fr/svn/ProgSVN/trunk@4174 bf3deb0d-5f1a-0410-827f-c0cc1f45334c

form.php

@@ -337,6 +337,31 @@ class form
     return $errors;
   }
 
+  /** If there is at least one error reported in $errors, save the old values
+    * and the errors in the session, and redirect to the provided url.
+    * If there is no error, do nothing
+    * @param array $values The values of the fields filled by the user
+    * @param array $errors The errors detected by a verify
+    * @param object $route the route object
+    * @param string $url The URL to redirect
+    *
+    * Example :
+      $form = new \form ();
+      $form->logging (array ('\apps\general\controllers\logging', 'log'),
+                      $authHTML["email"]);
+      $values = $form->values ();
+      $errors = $spaceObj->verify ($values);
+      $form->redirectIfError ($values, $errors, $route, "/admin/space/");
+      $spaceuuid = $spaceObj->spaceCreateConceal ($values["spacename"]);
+      $route->redirect ("/admin/space/");
+    */
+  public function redirectIfError ($values, $errors, $route, $url)
+  {
+    $this->saveValuesErrors ($values, $errors);
+    if (count ($errors)) $route->redirect ($url);
+    $form->saveValuesErrorsReset ();
+  }
+
   /** Save the values and errors to be displayed in the next page if the session
     * is available
     * Need the session to work