Question

我正在尝试在Django＆amp;中创建一个简单的视图GAE，它将检查用户是否有个人资料实体并为每个案例打印不同的消息。我有下面的程序，但不知何故，GAE似乎总是返回一个对象。我的节目在

之下

import datetime
from django.http import HttpResponse, HttpResponseRedirect
from google.appengine.api import users
from google.appengine.ext import db
from models import Profile
import logging
#from accounts.views import profile

# Create your views here.
def login_view(request):
    user = users.get_current_user()
    profile = db.GqlQuery("SELECT * FROM Profile WHERE account = :1",
                            users.get_current_user())
    logging.info(profile)
    logging.info(user)
    if profile:
        return HttpResponse("Congratulations Your profile is already created.")
    else:
        return HttpResponse("Sorry Your profile is NOT created.")

我的模型对象是Profile定义如下：

class Profile(db.Model):
    first_name = db.StringProperty()
    last_name = db.StringProperty()
    gender = db.StringProperty(choices=set(["Male", "Female"]))
    account = db.UserProperty(required = True)
    friends = db.ListProperty(item_type=users.User)
    last_login = db.DateTimeProperty(required=True)

感谢您的帮助。

Answer 1

我担心你忘了执行查询。试试get()方法。它返回第一个结果，如果查询没有返回结果，则返回None。

profile = db.GqlQuery("SELECT * FROM Profile WHERE account = :1",
                        users.get_current_user()).get()

如何在GAE中检查记录的存在性

1 个答案: