start implementing stored waiting list position

booking.helper.inc

@@ -236,6 +236,26 @@ function _booking_get_waitinglist_top()
 	return -1;
 }
 
+/**
+ * Helper function to retrieve all the people on the waiting list
+ */
+function _booking_get_waitinglist()
+{
+	global $event;
+
+	// Taken from the Waiting List page, not very optimised
+	$result = db_query('SELECT DISTINCT nid, booking_firstname, booking_lastname, booking_state, booking_readinggroup, booking_country, booking_status
+	                    FROM (
+	                      SELECT p.nid, p.booking_firstname, p.booking_lastname, p.booking_state, p.booking_country, p.booking_readinggroup, pay.booking_payment_date, p.booking_status
+	                      FROM {booking_person} p, {booking_payment} pay
+					     					WHERE p.booking_eventid = :eid and p.nid = pay.booking_person_nid and ( p.booking_status = 2 or p.booking_status = 4)
+	                    ) AS booking
+	                    ORDER BY booking_status, booking_payment_date',
+						array(':eid' => $event->eid));		
+
+	return $result;
+}
+
 /**
  * Helper function to update the status of a registration
  */

booking.install

@@ -760,6 +760,16 @@ function booking_update_7250() {
 }
 */
 
+/**
+* Add field to store waiting list position
+*/
+function booking_update_7251() {
+	$spec = array('type' => 'int', 'length' => '11', 'default' => 0, 'not null' => FALSE);
+	db_add_field('booking_person',  'booking_waitlist_pos', $spec);
+	//update the view to match the new table definition
+	_booking_node_create_mysqlview();	
+}
+
 /**
 * Add custom cache table
 */
@@ -852,6 +862,7 @@ function booking_schema() {
 			'booking_gender' => array('type' => 'varchar', 'length' => '1', 'not null' => TRUE),         
 			'booking_dob' => array('type' => 'int', 'not null' => TRUE, 'disp-width' => '11'),			                             
 			'booking_status' => array('type' => 'int', 'length' => '11', 'default' => 0, 'not null' => FALSE),   
+			'booking_waitlist_pos' => array('type' => 'int', 'length' => '11', 'default' => 0, 'not null' => FALSE),
 			'booking_committee_member' => array('type' => 'varchar', 'length' => '1', 'not null' => FALSE, 'default' => 'N'),
 			'booking_welfare_required' => array('type' => 'varchar', 'length' => '1', 'not null' => FALSE, 'default' => 'N'),  
 			'booking_barcode' => array('type' => 'varchar', 'length' => '20', 'not null' => FALSE),

booking.regn_node.inc

@@ -612,6 +612,9 @@ function booking_update($node) {
 		else {
 			watchdog('booking', 'Still no room on the booked in list though.');
 		}
+
+		// Update waiting list positions
+		_booking_waitinglist_update_trigger();
 	}
 	//check if someone has moved to booked-in list from waiting-list
 	elseif ($previous_status->booking_status == 2 && $node->booking_status == 1) {
@@ -637,6 +640,8 @@ function booking_update($node) {
 			$waitinglist_nid = _booking_get_waitinglist_top();			
 		}
 
+		// Update waiting list positions
+		_booking_waitinglist_update_trigger();
 	}	
 	//check if someone has been demoted to the "missed payment deadline" status from being booked-in
 	elseif ($previous_status->booking_status == 1 && $node->booking_status == 4) {
@@ -783,6 +788,26 @@ function booking_delete($node) {
 
 }
 
+/**
+ * Helper function to update the waiting list position for everyone on the waiting list
+ */
+function _booking_waitinglist_update_trigger()
+{
+	global $event;
+	$waiting_list = _booking_get_waitinglist();
+	$counter = 1;
+
+	foreach ($waiting_list as $person) {
+		db_update('booking_person')
+		  ->fields(array(
+				'booking_waitlist_pos' => $counter++,
+			))
+		  ->condition('nid', $person->nid)
+		  ->execute();			
+	}
+
+}
+
 
 function booking_view($node, $view_mode) {
 	global $event;