def profile(username, friends_page_number=1):
logged_user = None
rel = None
friends_page = False
friends_per_page = 3
profile_messages = []
user = User.getByName(username)
if user:
if session['username']:
logged_user = User.getByName(session['username'])
rel = Relationship.get_relationship_status(logged_user.id, user.id)
# get user friends
friends_list = Relationship.get_friends(
user=logged_user.id,
rel_type=RELATIONSHIP_TYPE.get(FRIENDS),
status=STATUS_TYPE.get(APPROVED)
)
friends_total = len(friends_list)
if 'friends' in request.url:
friends_page = True
# pagination
limit = friends_per_page * friends_page_number
offset = limit - friends_per_page
if friends_total >= limit:
friends = friends_list[offset:limit]
else:
friends = friends_list[offset:friends_total]
else:
if friends_total >= 5:
friends = friends_list[:5]
else:
friends = friends_list
form = FeedPostForm()
if logged_user and (rel == "SAME" or rel == "FRIENDS_APPROVED"):
profile_messages = Message.getMessages(logged_user.id)
return render_template('user/profile.html',
user=user,
logged_user=logged_user,
rel=rel,
friends=friends,
friends_total=friends_total,
friends_page=friends_page,
form=form,
profile_messages=profile_messages
)
else:
abort(404)
def process_message(message):
# get the from_user friends
from_user = User.getById(message.from_user)
friends = Relationship.get_friends(user=from_user.id,
rel_type=RELATIONSHIP_TYPE.get(FRIENDS),
status=STATUS_TYPE.get(APPROVED))
"""
Fan out pattern: means that each user have a list of posts of users that are friends with him (friends_approved).
So each user have it's feed.
NB: Fan out pattern is Scalable.
"""
# get the from_user's friends
for friend in friends:
rel_status = Relationship.get_relationship_status(
friend.to_user, message.to_user)
if rel_status != "BLOCKED":
Feed(
user=friend.to_user,
message=message.id,
).save_database()
return True