def course_search(self, courseCode):
"""
Returns all known sections of the specified course. Each section in the
returned dictionary is unique.
"""
namespace = 'course-search'
cacheTime = 60 # Cache course search results for one minute
cached = memcache.get(courseCode, namespace)
if cached:
return cached
courses = Course.all()
courses.filter('courseCode =', courseCode)
courses = self._make_sections_unique(courses)
courseDict = self._build_course_dict(courses)
memcache.set(courseCode, courseDict, namespace=namespace, time=cacheTime)
return courseDict
def safely_delete(self, schedule):
profile = profiles.get_user_profile_from_ds()
# Simply comparing the two schedules themselves doesn't work
# so we compare their keys
if profile.currentSchedule.key() == schedule.key():
logging.info('Deleted current schedule "' + schedule.name + '"')
profile.currentSchedule = None
profile.put()
# Delete all courses in this schedule
courses = Course.all().ancestor(schedule)
for course in courses:
course.delete()
# Unshare this schedule from everyone
records = ShareRecord.all().ancestor(schedule)
for sharing in records:
sharing.delete()
schedule.delete()
def update_courses(self, schedule, courseDict): # Get all courses in datastore # For each course submitted, overwrite a course from the datastore with it. # If there are not enough courses in the datastore, create new ones. # If there are leftover courses, delete them. query = Course.all() query.ancestor(schedule) fromDatastore = [] coursesToPut = [] for course in query: fromDatastore.append(course) for courseData in courseDict: # Courses should belong to their schedule's entity group course = self.safePop(fromDatastore) or Course(parent=schedule) course.owner = users.get_current_user() course.schedule = schedule course.update_from_coursedata(courseData) coursesToPut.append(course) # The courses left in fromDatastore should be deleted return coursesToPut, fromDatastore
