From 53b2809af7b667d7aa5d17b31648ff0b2332fc96 Mon Sep 17 00:00:00 2001
From: eileen <emcnaughton@wikimedia.org>
Date: Thu, 18 Jan 2018 11:17:56 +1300
Subject: [PATCH] CRM-21672 fix intra-rc regression, fatal when deleting
 participants

Change-Id: Iccbd17d53f07a93c74ce46e9539d1768019a2532
---
 CRM/Core/Form.php        | 20 ++++++++++++++++++++
 CRM/Core/Form/Search.php |  3 +++
 2 files changed, 23 insertions(+)

diff --git a/CRM/Core/Form.php b/CRM/Core/Form.php
index d6035cad3def..5cb75a5b2b08 100644
--- a/CRM/Core/Form.php
+++ b/CRM/Core/Form.php
@@ -2388,4 +2388,24 @@ public function getCurrency($submittedValues = array()) {
     return $currency;
   }
 
+  /**
+   * Is the form in view or edit mode.
+   *
+   * The 'addField' function relies on the form action being one of a set list
+   * of actions. Checking for these allows for an early return.
+   *
+   * @return bool
+   */
+  function isFormInViewOrEditMode() {
+    return in_array($this->_action, [
+      CRM_Core_Action::UPDATE,
+      CRM_Core_Action::ADD,
+      CRM_Core_Action::VIEW,
+      CRM_Core_Action::BROWSE,
+      CRM_Core_Action::BASIC,
+      CRM_Core_Action::ADVANCED,
+      CRM_Core_Action::PREVIEW,
+    ]);
+  }
+
 }
diff --git a/CRM/Core/Form/Search.php b/CRM/Core/Form/Search.php
index dabab8620fea..3b3dcda18b6f 100644
--- a/CRM/Core/Form/Search.php
+++ b/CRM/Core/Form/Search.php
@@ -203,6 +203,9 @@ public function getDefaultContext() {
    * Add generic fields that specify the contact.
    */
   protected function addContactSearchFields() {
+    if (!$this->isFormInViewOrEditMode()) {
+      return;
+    }
     $this->addSortNameField();
 
     $this->_group = CRM_Core_PseudoConstant::nestedGroup();