From 8d47034f09852f37f5fb9dabab85a031b901a7fd Mon Sep 17 00:00:00 2001
From: JKingsnorth <john@johnkingsnorth.co.uk>
Date: Tue, 4 Aug 2015 10:35:41 +0100
Subject: [PATCH] CRM-16959 - Support multiple contact/group IDs in a more
 standard format

---
 api/v3/GroupContact.php | 53 ++++++++++++++++++++++++++++-------------
 1 file changed, 36 insertions(+), 17 deletions(-)

diff --git a/api/v3/GroupContact.php b/api/v3/GroupContact.php
index c39f826d13..98efb573bb 100644
--- a/api/v3/GroupContact.php
+++ b/api/v3/GroupContact.php
@@ -73,6 +73,16 @@ function civicrm_api3_group_contact_get($params) {
   return civicrm_api3_create_success($values, $params, 'GroupContact');
 }
 
+/**
+ * Adjust metadata for Create action.
+ *
+ * @param array $params
+ */
+function _civicrm_api3_group_contact_create_spec(&$params) {
+  $params['contact_id']['api.required'] = 1;
+  $params['group_id']['api.required'] = 1;
+}
+
 /**
  * Add contact(s) to group(s).
  *
@@ -101,12 +111,13 @@ function civicrm_api3_group_contact_get($params) {
  * @endcode
  *
  * @param array $params
- *   Input parameters.
- *   - "contact_id" (required) : first contact to add
- *   - "group_id" (required): first group to add contact(s) to
- *   - "contact_id.1" etc. (optional) : another contact to add
- *   - "group_id.1" etc. (optional) : additional group to add contact(s) to
- *   - "status" (optional) : one of "Added", "Pending" or "Removed" (default is "Added")
+ *   Input parameters:
+ *   - "contact_id" (required): First contact to add, or array of Contact IDs
+ *   - "group_id" (required): First group to add contact(s) to, or array of Group IDs
+ *   - "status" (optional): "Added" (default), "Pending" or "Removed"
+ *   Legacy input parameters (will be deprecated):
+ *   - "contact_id.1" etc. (optional): Additional contact_id to add to group(s)
+ *   - "group_id.1" etc. (optional): Additional groups to add contact(s) to
  *
  * @return array
  *   Information about operation results
@@ -121,7 +132,6 @@ function civicrm_api3_group_contact_create($params) {
       $params['contact_id'] = $info['values'][$params['id']]['contact_id'];
     }
   }
-  civicrm_api3_verify_mandatory($params, NULL, array('group_id', 'contact_id'));
   $action = CRM_Utils_Array::value('status', $params, 'Added');
   return _civicrm_api3_group_contact_common($params, $action);
 }
@@ -179,23 +189,32 @@ function _civicrm_api3_group_contact_common($params, $op = 'Added') {
 
   $contactIDs = array();
   $groupIDs = array();
+
+  // CRM-16959: Handle multiple Contact IDs and Group IDs in legacy format 
+  // (contact_id.1, contact_id.2) or as an array
   foreach ($params as $n => $v) {
     if (substr($n, 0, 10) == 'contact_id') {
-      $contactIDs[] = $v;
+      if (is_array($v)) {
+        foreach ($v as $arr_v) {
+          $contactIDs[] = $arr_v;
+        }
+      }
+      else {
+        $contactIDs[] = $v;
+      }
     }
     elseif (substr($n, 0, 8) == 'group_id') {
-      $groupIDs[] = $v;
+      if (is_array($v)) {
+        foreach ($v as $arr_v) {
+          $groupIDs[] = $arr_v;
+        }
+      }
+      else {
+        $groupIDs[] = $v;
+      }
     }
   }
 
-  if (empty($contactIDs)) {
-    return civicrm_api3_create_error('contact_id is a required field');
-  }
-
-  if (empty($groupIDs)) {
-    return civicrm_api3_create_error('group_id is a required field');
-  }
-
   $method = CRM_Utils_Array::value('method', $params, 'API');
   $status = CRM_Utils_Array::value('status', $params, $op);
   $tracking = CRM_Utils_Array::value('tracking', $params);
-- 
2.25.1