Ability to update subject codes.

application/modules/courses/models/CourseModel.php

@@ -1376,6 +1376,7 @@ class Courses_CourseModel extends Unl_Model
              . 'WHERE a.courseGradTieInId = b.courseGradTieInId ';
 
         $db->query($sql);
+        $db->query('DROP TABLE creqCourseGradTieInsUpdate');
     }
 
     static public function _deleteGradTieIns($models)
@@ -2174,6 +2175,11 @@ class Courses_CourseModel extends Unl_Model
         $this->_data['request'] = $request->getId();
     }
     
+    public function clearRequest()
+    {
+    	$this->_data['request'] = null;
+    }
+
     public function getType()
     {
         return $this->_data['type'];
@@ -2286,5 +2292,111 @@ class Courses_CourseModel extends Unl_Model
         
         $db->query('DROP TABLE creqCoursesUpdate');
     }
+    
+    static public function updateSubjectCode($oldCode, $newCode)
+    {
+        $db = Zend_Registry::get('db');
+        $generationIds = array();
+        
+        $select = new Zend_Db_Select($db);
+        $select->from(array('c' => 'creqCourseCodes'), array());
+        $select->join(array('x' => 'creqCourseCrosslistings'), 'c.courseCodeId = x.courseCode', array('generation'));
+        $select->join(array('g' => 'creqCourseGenerations'), 'x.generation = g.courseGenerationId', array('course', 'type'));
+        $select->join(array('s' => 'creqCourses'), 'g.course = s.courseId', array('currentGeneration'));
+        $select->where('c.subject = ?', $oldCode);
+        $select->where('g.courseGenerationId = s.currentGeneration');
+        
+        $data = $select->query()->fetchAll();
+        
+        foreach ($data as $row) {
+            $generationIds[] = $row['currentGeneration'];
+        }
+        
+        
+        $select = new Zend_Db_Select($db);
+        $select->from(array('d' => 'creqCourseDetails'), array('prerequisite'));
+        $select->join(array('g' => 'creqCourseGenerations'), 'd.generation = g.courseGenerationId', array('course', 'type'));
+        $select->join(array('s' => 'creqCourses'), 'g.course = s.courseId', array('currentGeneration'));
+        $select->where(
+            $db->quoteInto('d.prerequisite LIKE ? OR ', '%' . $oldCode . '%') .
+            $db->quoteInto('d.notes LIKE ? OR ',        '%' . $oldCode . '%') .
+            $db->quoteInto('d.description LIKE ? OR ',  '%' . $oldCode . '%') .
+            $db->quoteInto('d.title LIKE ?',            '%' . $oldCode . '%')
+        );
+        
+        $data = $select->query()->fetchAll();
+        
+        foreach ($data as $row) {
+            $generationIds[] = $row['currentGeneration'];
+        }
+        
+        
+        $select = new Zend_Db_Select($db);
+        $select->from(array('c' => 'creqCourseCodes'), array());
+        $select->join(array('x' => 'creqCourseCrosslistings'), 'c.courseCodeId = x.courseCode', array('generation'));
+        $select->join(array('g' => 'creqCourseGenerations'), 'x.generation = g.courseGenerationId', array('course', 'type'));
+        $select->where('c.subject = ?', $oldCode);
+        $select->where('g.courseGenerationId NOT IN (SELECT parent FROM creqCourseGenerations WHERE parent IS NOT NULL)');
+        
+        $data = $select->query()->fetchAll();
+        
+        foreach ($data as $row) {
+            $generationIds[] = $row['generation'];
+        }
+        
+        
+        $select = new Zend_Db_Select($db);
+        $select->from(array('d' => 'creqCourseDetails'), array('prerequisite'));
+        $select->join(array('g' => 'creqCourseGenerations'), 'd.generation = g.courseGenerationId', array('course', 'type'));
+        $select->where(
+            $db->quoteInto('d.prerequisite LIKE ? OR ', '%' . $oldCode . '%') .
+            $db->quoteInto('d.notes LIKE ? OR ',        '%' . $oldCode . '%') .
+            $db->quoteInto('d.description LIKE ?',      '%' . $oldCode . '%')
+        );
+        $select->where('g.courseGenerationId NOT IN (SELECT parent FROM creqCourseGenerations WHERE parent IS NOT NULL)');
+        
+        $data = $select->query()->fetchAll();
+        
+        foreach ($data as $row) {
+            $generationIds[] = $row['generation'];
+        }
+        
+        
+        sort($generationIds);
+        $generationIds = array_unique($generationIds);
+        
+        $officialGenerations = Courses_CourseModel::find($generationIds);
+        
+        $parentMap = array();
+        foreach ($officialGenerations as $course) {
+            $newCourse = clone $course;
+            $newCourse->setType($course->getType());
+            $crosslistings = $newCourse->getCrosslistings();
+            foreach($crosslistings as $id => $x) {
+                if ($x['subject'] == $oldCode) {
+                    $newCourse->editCrosslisting($id, $x['type'], $newCode, $x['courseNumber'], $x['courseLetter']);
+                }
+            }
+            $newCourse->setPrerequisite(strtr($newCourse->getPrerequisite(), array($oldCode => $newCode)));
+            $newCourse->setNotes(strtr($newCourse->getNotes(), array($oldCode => $newCode)));
+            $newCourse->setDescription(strtr($newCourse->getDescription(), array($oldCode => $newCode)));
+            $newCourse->setTitle(strtr($newCourse->getTitle(), array($oldCode => $newCode)));
+            
+            $newCourse->setEffectiveSemester('20092');
+            if ($newCourse->getType() == 'official') {
+                $newCourse->clearRequest();
+            }
+            
+            Courses_CourseModel::save($newCourse);
+            $parentMap[$course->getId()] = $newCourse->getId();
+        }
+        
+        foreach ($parentMap as $oldId => $newId) {
+            $sql = "UPDATE creqCourseGenerations SET parent = $newId WHERE parent = $oldId AND courseGenerationId != $newId";
+            $db->query($sql);
+            $sql = "UPDATE creqCourses SET currentGeneration = $newId WHERE currentGeneration = $oldId";
+            $db->query($sql);
+        }
+    }
 }