Checking to see if a course code is already in use (on the request edit page) should work again.

application/modules/courses/controllers/EditController.php

@@ -13,6 +13,7 @@ class Courses_EditController extends App_Controller_Action
         $this->view->parentCourse = $session->parentCourse;
         $this->view->request = $request;
         $this->view->errors = $session->errors;
+        $this->view->formSessionId = $in['id'];
         
         $layout = Zend_Layout::getMvcInstance();
     }
@@ -373,7 +374,7 @@ class Courses_EditController extends App_Controller_Action
     {
         $in = $this->_getAllParams();
         
-        $session = new Zend_Session_Namespace('Edit Request');
+        $session = new Zend_Session_Namespace('Edit Request ' . $in['id']);
         $course = $session->course;
         
         $available = $this->_courseCodeIsAvailable($course, $in['subject'], $in['courseNumber'], $in['courseLetter']);

application/modules/courses/views/scripts/edit/index.phtml

@@ -5,6 +5,10 @@
 <?php $this->layout()->breadcrumbs = array('Editing: ' . $this->course->getCourseCode() . ' (' . $this->request->getTypeDescription() . ')'); ?>
 
 
+<script type="text/javascript">
+document.formSessionId = '<?php echo $this->formSessionId; ?>';
+</script>
+
 <div class="one_col left">
 <?php echo $this->partial('edit/bulletin-preview.phtml', $this); ?>
 </div>

document_root/javascript/courses/edit.js

@@ -300,6 +300,7 @@ var courseCodeAvailableAjaxResponder = AjaxClient.extend(
     getUrl: function() {
         return baseUrl
              + '/courses/edit/is-course-code-available'
+             + '/id/' + document.formSessionId
              + '/subject/' + this.subjectNode.value
              + '/courseNumber/' + this.courseNumberNode.value
              + '/courseLetter/' + this.courseLetterNode.value;