bp = Blueprint('store', __name__)
@bp.route('/cart/<product_id>')
def add_to_cart(product_id):
print(session)
if "order_id" in session:
print(session["order_id"])
order = Order.query.get(session["order_id"])
# add products to order object ...
else:
order = Order()
db.session.add(order)
db.session.commit()
session["order_id"] = order.order_id
session.modified = True
return redirect(url_for('store.products'))
@bp.route('/', methods=['GET', 'POST'])
def products():
print(session)
当用户第一次添加到购物车时,我会创建一个新订单并将该订单的 order_id(整数)保存在会话中以将产品添加到订单中。然后当他们添加到购物车时,我可以查询订单并将产品添加到其中。
但是,在请求重定向到 store.products 页面后,会话不断重置为空字典。我不确定如何实现会话,以便它在所有请求中持续存在并使用它来跟踪 order_id。
我的订单表定义为:
class Order(db.Model):
__tablename__ = 'Orders'
order_id = db.Column(db.Integer, primary_key=True)
products = db.relationship('Product', secondary=cart, back_populates='orders')
customer_id = db.Column(db.Integer, db.ForeignKey('Customers.customer_id'))
customer = db.relationship('Customer', back_populates='orders')
quantities = db.relationship('Quantity')
message = db.Column(db.Text)