From: Anthony Nemirovsky <anemirovsky@giantrabbit.com>
Date: Thu, 13 Nov 2014 18:23:17 +0000 (-0800)
Subject: Add hook_civicrm_preProcess function.
X-Git-Url: https://vcs.fsf.org/?a=commitdiff_plain;h=21d2903d2270e61157cad6f831dcee4424ece80a;p=civicrm-core.git

Add hook_civicrm_preProcess function.

This seems to be a generically useful spot to intercept the form object and
change things before the form is processed. Specifically, we need this hook
for integrating the Event Cart with the CiviDiscount extension.
---

diff --git a/CRM/Core/Form.php b/CRM/Core/Form.php
index deb7eac180..3e92e6f4bf 100644
--- a/CRM/Core/Form.php
+++ b/CRM/Core/Form.php
@@ -435,6 +435,8 @@ class CRM_Core_Form extends HTML_QuickForm_Page {
 
     $this->preProcess();
 
+    CRM_Utils_Hook::preProcess(get_class($this), $this);
+
     $this->assign('translatePermission', CRM_Core_Permission::check('translate CiviCRM'));
 
     if (
diff --git a/CRM/Utils/Hook.php b/CRM/Utils/Hook.php
index 3ca5709eb2..63239d4f9d 100644
--- a/CRM/Utils/Hook.php
+++ b/CRM/Utils/Hook.php
@@ -302,6 +302,18 @@ abstract class CRM_Utils_Hook {
     return self::singleton()->invoke(6, $op, $objectName, $objectId, $links, $mask, $values, 'civicrm_links');
   }
 
+  /**
+   * This hook is invoked during the CiviCRM form preProcess phase.
+   *
+   * @param string $formName the name of the form
+   * @param object $form     reference to the form object
+   *
+   * @return null the return value is ignored
+   */
+  static function preProcess($formName, &$form) {
+    return self::singleton()->invoke(2, $formName, $form, $formName, $formName,
+  }
+
   /**
    * This hook is invoked when building a CiviCRM form. This hook should also
    * be used to set the default values of a form element