Add script for deleting and merging redundant courses

apiserver/delete_course_merge_into.py

@@ -0,0 +1,39 @@
+import django, sys, os
+os.environ['DJANGO_SETTINGS_MODULE'] = 'apiserver.settings'
+django.setup()
+
+from apiserver.api import models
+
+print()
+
+if len(sys.argv) != 3:
+    print('Invalid arguments.')
+    print('Usage: python delete_course_merge_into.py 123 456')
+    os._exit(1)
+
+course_to_delete_id = sys.argv[1]
+course_merge_into_id = sys.argv[2]
+
+course_to_delete = models.Course.objects.get(id=course_to_delete_id)
+course_merge_into = models.Course.objects.get(id=course_merge_into_id)
+
+print('Delete course', course_to_delete_id, course_to_delete.name)
+print('and merge into', course_merge_into_id, course_merge_into.name, '?')
+print('ENTER to continue, ctrl-c to abort.')
+try:
+    input()
+except KeyboardInterrupt:
+    print('\nCancelled.')
+    os._exit(0)
+
+interests = course_to_delete.interests
+
+print('Deleting', interests.count(), 'interests...')
+interests.all().delete()
+
+sessions = course_to_delete.sessions
+print('Moving', sessions.count(), 'sessions...')
+sessions.update(course=course_merge_into)
+
+print('Deleting course...')
+course_to_delete.delete()