CourseAdmin will now save updates as new generations.

application/controllers/CourseadminController.php

@@ -94,7 +94,13 @@ class CourseAdminController extends Nmc_Controller_Action
         $in = $this->getRequest();
 
         $course = CourseGenerations::getInstance()->findOne($_POST['courseId']);
-        if(!$course) {
+        if($course) {
+            $oldId = $course->getPrimaryKey();
+            $children = $course->getChildGenerations();
+            $course = clone $course;
+        } else {
+            $oldId = -1;
+            $children = array();
             $course = CourseGenerations::getInstance()->fetchNew();
             $course->type = 'official';
         }
@@ -177,12 +183,22 @@ class CourseAdminController extends Nmc_Controller_Action
             $course->effectiveSemester = 20081;
         }
 
+
         $course->save();
+        $db = Zend_Registry::get('db');
+        $sql = 'UPDATE creqCourseGenerations '
+             . $db->quoteInto('SET parent = ? ', $course->getPrimaryKey())
+             . $db->quoteInto('WHERE parent = ? ', $oldId)
+             . $db->quoteInto('AND courseGenerationId != ? ', $course->getPrimaryKey());
+        $db->query($sql);
 
 
         if (is_array($_POST['essentialStudies'])) {
         foreach ($_POST['essentialStudies'] as $collegeName => $areas) {
             $college = Colleges::getInstance()->fetchWithName($collegeName);
+            if (!$college) {
+                continue;
+            }
             foreach ($course->crosslistings as $crosslisting) {
                 $courseCodeId = $crosslisting->courseCode;
                 $courseCode = CourseCodes::getInstance()->findOne($courseCodeId);
@@ -207,11 +223,19 @@ class CourseAdminController extends Nmc_Controller_Action
 
         if($courseId > 0) {
             $course = CourseGenerations::getInstance()->findOne($courseId);
+            $parent = $course->parent;
+
+            $db = Zend_Registry::get('db');
+            $sql = 'UPDATE creqCourseGenerations '
+                 . $db->quoteInto('SET parent = ? ', $parent)
+                 . $db->quoteInto('WHERE parent = ? ', $courseId);
+            $db->query($sql);
+
             $course->delete();
         }
 
         $out = new Nmc_View();
-        $out->refresh = '/courseadmin/index/' . $courseId;
+        $out->refresh = '/courseadmin/index/' . $parent;
         echo $out->render('unl_index.xhtml');
     }