def add_url(id, url):
if(url.startswith('http://')):
wall = fetch(id)
if wall:
wall.item_count += 1
item = WallItem(id=wall.item_count, wall=wall, url=url)
item.put()
wall.put()
return item
else:
raise ValueError('Must be a well formatted URL')
def fetch_item(wall_id, item_id):
wall = fetch(wall_id)
if wall:
q = WallItem.gql('WHERE wall = :1 and id = :2', wall, item_id)
item = q.get()
return item
