work on form to edit registration for variety sessions

booking.module

@@ -462,6 +462,14 @@ function booking_menu() {
       'access arguments'                    => array('edit variety sessions'),
       'type'                                => MENU_CALLBACK,
     );	
+
+    $items['admin/config/booking/variety/registration/%/edit'] = array(
+      'title'                               => 'Edit Variety Session Registration',
+      'page callback'                       => 'drupal_get_form',
+      'page arguments'                      => array('booking_variety_regn_edit_form', 5),		
+      'access arguments'                    => array('edit variety sessions'),
+      'type'                                => MENU_CALLBACK,
+    );    
   }
   
   //configure study groups

booking.variety_admin.inc

@@ -457,6 +457,8 @@ function booking_variety_sessions_view_summary() {
   foreach ($timeslot_list as $timeslot) {
     $header[] = $timeslot->booking_variety_time_descrip;
   }
+  // Add a link at the end to edit a variety session registration
+  $header[] = "Edit Session Registrations";
 
   $person_query = db_query("SELECT * FROM {booking_person_view} WHERE booking_status = 1 " . 
                           " ORDER BY booking_lastname, booking_firstname")->fetchAllAssoc('nid');	  
@@ -472,9 +474,9 @@ function booking_variety_sessions_view_summary() {
         //get details of the person's variety session for this timeslot
         $vid = $session_ids[$timeslot->tid];
 
-        watchdog('booking_debug', 'Person @nid in timeslot @tid registered for session id @vid', array(
+        //watchdog('booking_debug', 'Person @nid in timeslot @tid registered for session id @vid', array(
-          '@nid' => $person->nid, '@tid' => $timeslot->tid, '@vid' => $vid,
+        //  '@nid' => $person->nid, '@tid' => $timeslot->tid, '@vid' => $vid,
-        ));
+        //));
         
         // in case the person is somehow registered for a session that no longer exists
         if (isset($sessions[$vid])) {
@@ -483,13 +485,14 @@ function booking_variety_sessions_view_summary() {
         else {
           $text = "";
         }
-
         $newline[] = $text;
       }
       else {
         $newline[] = "";        
       }
     } //end iterate variety session timeslot list
+    $newline[] = l('Edit', t('admin/config/booking/variety/!tid/csv', array('!tid' => $data->tid))),
+
     //add the line to the array of rows
     $rows[] = $newline;
   } //end iterate person list
@@ -610,3 +613,99 @@ function booking_varietysessions_csv_report($timeslot_id) {
   print $csv;
   exit(0);
 }
+
+/**
+ * Build the admin form for editing variety session registrations
+ */
+function booking_variety_regn_edit_form($node, &$form_state, $variety_regn_id)
+{
+  global $event;
+  $form = array();
+  $data = $node;
+  $redirect_path = "admin/config/booking/variety/report";
+  $prefix = "<h3>Edit variety session registration for user</p>"
+
+  //verify that $variety_regn_id is a number
+  if (! preg_match('/^[0-9]+$/', $variety_regn_id)) {
+    drupal_set_message("Error: Invalid variety session registration ID supplied. Unable to update variety session registration for user.", 'error', FALSE);
+    drupal_goto($redirect_path);
+    return "";
+  }
+
+  $variety_session_query = db_query("SELECT r.*, p.* FROM {booking_variety_regn} r
+    inner join {booking_person} p on p.nid = r.booking_person_nid
+    WHERE p.booking_eventid = :eid AND r.booking_person_nid = :rid", 
+    array(':eid' => $event->eid, ':rid' => $variety_regn_id));
+  $session_details = $variety_session_query->fetchAll();
+
+  if (! $session_details) {
+    drupal_set_message("Error: Unable to find matching variety session registration ID. Unable to update variety session registration for user.", 'error', FALSE);
+    drupal_goto($redirect_path);
+    return "";    
+  }
+
+  $session_ids = drupal_json_decode($session_details->booking_variety_ids);
+
+  // Query the variety timeslot table so we know how many select elements to create
+  $timeslot_query = db_select('booking_variety_timeslots', 'v');	
+  $timeslot_query->condition('v.booking_eventid', $event->eid, '=')
+    ->fields('v')
+    ->orderBy('v.booking_variety_start');
+  $timeslot_result = $timeslot_query->execute();  
+
+
+	//define the form for variety session configuration if we're not deleting a session
+	if(!isset($form_state['storage']['confirm'])) {
+		$form[] = array (
+			'first_heading' => array(
+				'#type' => 'markup',
+				'#markup' => $prefix,
+			),
+    );
+            
+    //add this to the form in a hidden field so we can update the right event
+    $form['rid'] = array (
+      '#type' => 'hidden',
+      '#value' => $variety_regn_id,
+    );
+
+    $form['variety-sessions'] = array(
+      '#type' => 'fieldset',
+      '#title' => 'Select Variety Sessions',
+      '#prefix' => '<div id="booking_variety_session_fieldset_wrapper">',
+      '#suffix' => '</div>'
+    );      
+
+    //for each entry in the variety timeslot table, create a new form select item
+    foreach($timeslot_result as $timeslot) {
+      $fieldname = 'select-variety-' . $timeslot->tid;
+
+      //create the form element for this timeslot
+      $form['variety-sessions'][$fieldname] = array(
+        '#type' => 'select',
+        '#title' => t('Variety Session: ' . $timeslot->booking_variety_time_descrip),
+        '#required' => TRUE,
+        '#default_value' => isset($form_state['values'][$fieldname]) ? $form_state['values'][$fieldname] : $session_ids[$timeslot->$tid],
+        '#options' => _booking_get_variety_timeslot_options($timeslot->tid),        
+      );
+    }		
+
+    $form['Update'] = array(
+      '#type' => 'submit',
+      '#value' => t('Update Session Registration'),
+    );
+    $form['Delete'] = array(
+      '#type' => 'submit',
+      '#value' => t('Delete Session Registration'),
+    );		
+ 
+    return array (
+      'form' => $form,
+    );
+  } //end checking for delete confirmation
+  else {
+    return confirm_form($form, "Are you sure you wish to delete all variety session registrations for id  " . $variety_regn_id . "?", 
+    current_path(), NULL, "Delete Session");		
+  }  
+
+}