def new_unit(content):
"""
create a new unit entity; return the id of the new unit
"""
course_id = content["course"]
course = get_content_by_id(course_id)
if course is None:
raise Exception("invalid course id: that course does not exist")
if "title" not in content:
content["title"] = ""
if "body" not in content:
content["body"] = ""
content["private"] = course.content["private"]
content["teacher"] = course.content["teacher"]
content["course"] = course_id
content["lessons"] = []
key = Curriculum(content_type="unit", content=content).put()
# add this unit to the parent course's unit list
course.content["units"].append(int(key.id()))
course.put()
return int(key.id())
def test_course_unit_lesson_creation_and_query(self):
"""
create a course, then unit, then lesson and make sure the entity
relationships are all valid
"""
course_key = Curriculum(
content_type = 'course',
content={'title':'numero uno'},
).put()
unit_key = Curriculum(
content_type = 'unit',
content={'course':int(course_key.id())}
).put()
lesson_key = Curriculum(
content_type = 'lesson',
content={'course':int(course_key.id()), 'unit':int(unit_key.id())}
).put()
lesson = lesson_key.get()
unit = ndb.Key(Curriculum, lesson.content['unit']).get()
course = ndb.Key(Curriculum, unit.content['course']).get()
self.assertIsNotNone(unit)
self.assertIsNotNone(course)
self.assertEqual(course.content['title'], 'numero uno')
def new_lesson(content):
"""
create a new lesson and return the lesson id
"""
unit_id = content['unit']
unit = get_content_by_id(unit_id)
if unit is None:
raise Exception("invalid unit id: that unit does not exist")
if 'title' not in content:
content['title'] = ''
if 'body' not in content:
content['body'] = ''
content['private'] = unit.content['private']
content['teacher'] = unit.content['teacher']
content['course'] = unit.content['course']
key = Curriculum(content_type = 'lesson', content = content).put()
# add this lesson to the parent unit's lesson list
unit.content['lessons'].append(int(key.id()))
unit.put()
return int(key.id())
def test_course_unit_lesson_creation_and_query(self):
"""
create a course, then unit, then lesson and make sure the entity
relationships are all valid
"""
course_key = Curriculum(
content_type='course',
content={
'title': 'numero uno'
},
).put()
unit_key = Curriculum(content_type='unit',
content={
'course': int(course_key.id())
}).put()
lesson_key = Curriculum(content_type='lesson',
content={
'course': int(course_key.id()),
'unit': int(unit_key.id())
}).put()
lesson = lesson_key.get()
unit = ndb.Key(Curriculum, lesson.content['unit']).get()
course = ndb.Key(Curriculum, unit.content['course']).get()
self.assertIsNotNone(unit)
self.assertIsNotNone(course)
self.assertEqual(course.content['title'], 'numero uno')
def new_unit(content):
"""
create a new unit entity; return the id of the new unit
"""
course_id = content['course']
course = get_content_by_id(course_id)
if course is None:
raise Exception("invalid course id: that course does not exist")
if 'title' not in content:
content['title'] = ''
if 'body' not in content:
content['body'] = ''
content['private'] = course.content['private']
content['teacher'] = course.content['teacher']
content['course'] = course_id
content['lessons'] = []
key = Curriculum(content_type='unit', content=content).put()
# add this unit to the parent course's unit list
course.content['units'].append(int(key.id()))
course.put()
return int(key.id())
def new_course(content):
"""
create a new course entity; return the id of the new course
content should conform to:
content = {
'teacher' : (str or int, Required),
'title' : (string),
'body' : (string),
'private' : (boolean),
}
"""
teacher_id = content['teacher']
teacher = get_user(teacher_id)
if teacher is None:
raise Exception("invalid user id: that user does not exist")
if 'title' not in content:
content['title'] = ''
if 'body' not in content:
content['body'] = ''
if 'private' not in content or content['private'] != True:
content['private'] = False
content['approved_students'] = []
content['pending_approval'] = []
content['units'] = []
content['listed'] = False
key = Curriculum(content_type = 'course', content = content).put()
if teacher.courses:
teacher.courses.append(int(key.id()))
else:
teacher.courses = [int(key.id())]
teacher.put()
return int(key.id())
