def create(username):
index = r.hgetall(SESSION_PREFIX + username)
# 检查库存
for k, v in index.items():
stock = Book.get_stock(k)
if int(stock) < int(v):
return False
r.rename(SESSION_PREFIX + username, ORDER_PREFIX + username)
for k, v in index.items():
stock = Book.get_stock(k)
Book.set_stock(k, int(stock) - int(v))
db.orders.insert({'username': username, 'books': index})
return True
def merge_cart(self):
"""
合并两个购物车(会话)
:param username:
:param session_id:
:return:
"""
cart1 = r.hgetall(SESSION_PREFIX + self.session_id)
cart2 = r.hgetall(SESSION_PREFIX + self.username)
r.hmset(SESSION_PREFIX + self.username, dict(cart1, **cart2))
r.delete(SESSION_PREFIX + self.session_id)
def get(isbn=None):
book = r.hgetall(BOOK_PREFIX + isbn)
if not book:
book = db.books.find_one({"isbn": isbn})
del book['_id']
r.hmset(BOOK_PREFIX + isbn, book)
return book
def get(username):
index = r.hgetall(ORDER_PREFIX + username)
pipeline = r.pipeline()
for isbn in index.keys():
pipeline.hgetall(BOOK_PREFIX + isbn)
books = pipeline.execute()
for book in books:
book['count'] = index[book['isbn']]
return books
def get(query_id):
index = r.hgetall(SESSION_PREFIX + query_id)
pipeline = r.pipeline()
for isbn in index.keys():
pipeline.hgetall(BOOK_PREFIX + isbn)
books = pipeline.execute()
for book in books:
book['count'] = index[book['isbn']]
return books
def get_user(self, username):
if not username:
return None
r.hgetall(USER_PREFIX + username)