def create_rating():
body = request.get_json()
if 'username' not in body:
abort(422)
course_id = body.get('course_id')
username = body.get('username')
comment = body.get('comment')
difficulty_level = body.get('difficulty_level')
content_density = body.get('content_density')
content_update = body.get('content_update')
satisfaction = body.get('satisfaction')
rating = Rating.query.filter(Rating.user_id == username,
Rating.course_id == course_id).first()
if rating is not None:
abort(422)
course = Course.query.get(course_id)
user = User.query.get(username)
if course is None or user is None:
abort(404)
total_rate = (difficulty_level + content_density + content_update +
satisfaction) / 4
rating = Rating(user_id=username,
course_id=course_id,
comment=comment,
difficulty_level=difficulty_level,
content_density=content_density,
content_update=content_update,
satisfaction=satisfaction,
total_rate=total_rate)
rating.insert()
update_rating(course)
notify(course, username)
return jsonify({'ratings': [rating.format() for rating in course.ratings]})
