Merge pull request #48 from dlobo/CRM-11435

fix CRM-11435

CRM/Event/BAO/Event.php

@@ -2006,5 +2006,26 @@ LEFT  JOIN  civicrm_price_field_value value ON ( value.id = lineItem.price_field
     $defaults = array();
     return CRM_Event_BAO_Event::retrieve($params, $defaults);
   }
+
+  /*
+   * Update the Campaign Id of all the participants of the given event
+   *
+   * @params int $eventID event id.
+   * @params int $eventCampaignID campaign id of that event
+   *
+   */
+  static function updateParticipantCampaignID($eventID, $eventCampaignID) {
+    $params = array();
+    $params[1] = array($eventID, 'Integer');
+
+    if(empty($eventCampaignID)) {
+      $query = "UPDATE civicrm_participant SET campaign_id = NULL WHERE event_id = %1";
+    }
+    else {
+      $query = "UPDATE civicrm_participant SET campaign_id = %2 WHERE event_id = %1";
+      $params[2] = array($eventCampaignID, 'Integer');
+    }
+    CRM_Core_DAO::executeQuery($query, $params);
+  }
 }
 

CRM/Event/Form/ManageEvent.php

@@ -79,6 +79,12 @@ class CRM_Event_Form_ManageEvent extends CRM_Core_Form {
 
   protected $_cancelURL = NULL;
 
+  /**
+   * The campaign id of the existing event, we use this to know if we need to update
+   * the participant records
+   */
+  protected $_campaignID = NULL;
+
   /**
    * Function to set variables up before form is built
    *
@@ -214,6 +220,8 @@ class CRM_Event_Form_ManageEvent extends CRM_Core_Form {
     if (isset($this->_id)) {
       $params = array('id' => $this->_id);
       CRM_Event_BAO_Event::retrieve($params, $defaults);
+
+      $this->_campaignID = CRM_Utils_Array::value('campaign_id', $defaults);
     }
     elseif ($this->_templateId) {
       $params = array('id' => $this->_templateId);
@@ -333,6 +341,16 @@ class CRM_Event_Form_ManageEvent extends CRM_Core_Form {
           array(1 => ($subPage == 'friend') ? 'Friend' : $className)
         ), ts('Saved'), 'success');
 
+      $config = CRM_Core_Config::singleton();
+      if (in_array('CiviCampaign', $config->enableComponents)) {
+        $values = $this->controller->exportValues($this->_name);
+        $newCampaignID = CRM_Utils_Array::value('campaign_id', $values);
+        $eventID = CRM_Utils_Array::value('id', $values);
+        if ($eventID && $this->_campaignID != $newCampaignID) {
+          CRM_Event_BAO_Event::updateParticipantCampaignID($eventID, $newCampaignID);
+        }
+      }
+
       $this->postProcessHook();
 
       if ($this->controller->getButtonName('submit') == "_qf_{$className}_upload_done") {