我正在编写一个Django程序,其中Department / Position字段与User模型相关联。在注册页面上,一个人需要输入姓/名,电子邮件,用户名,密码,这些是默认的用户模型字段,以及他们的部门和职位。
接下来是我创建的两个模型。
class Department(models.Model):
department_id = models.AutoField(primary_key=True)
department_name = models.CharField(max_length=100, unique=True)
is_active = models.BooleanField(default=True)
class Position(models.Model):
position_id = models.AutoField(primary_key=True)
position_name = models.CharField(max_length=100)
department = models.ForeignKey(Department)
user = models.OneToOneField(User, blank=True, related_name="position")
在views.py中,关联的视图如下所示:
def sign_up_in(request):
global user
post = request.POST
if post['email'] is u'' or post['password'] is u'':
msg = 'Please check sign-up input forms'
return render_to_response('none.html', {'msg': msg})
else:
if not user_exists(post['email']):
user = create_user(username=post['email'], email=post['email'], password=post['password'])
user.first_name=post['first']
user.last_name=post['last']
**user.position.position_name=post['position']**
user.department=post['department']
user.is_staff = True
user.save()
msg = 'Sign Up OK ' + user.first_name + ' ' + user.last_name
else:
msg = 'Existing User'
return render_to_response('login.html', {'msg': msg})
当我在上面的views.py中添加粗体线时,我开始收到错误“没有提供异常”。我应该在模型和视图中更改什么? 此外,在这行代码中,user = create_user(username = post ['email'],email = post ['email'],password = post ['password']),我该如何表达外键关系?
答案 0 :(得分:1)
简单的答案是user.position
尚不存在。
让我们将其分解以使其发挥作用。
def sign_up_in(request):
...
post = request.POST
... # Your if block
# 1. Create your user.
user = User.objects.create_user(post['email'], post['email'], post['password'])
user.first_name = post['first']
user.last_name = post['last']
user.is_staff = True
user.save()
# 2. Create/get your department.
dept, created = Department.objects.get_or_create(department_name=post['department'])
# 3. Create your position
position = Position.objects.create(department=dept, user=user, position=post['position'])
...
请注意,User.objects.create_user()
和Foo.objects.create()
会自动保存对象,因此如果您添加更多数据,则只需再次保存(如上面的用户所示)。
作为附注,虽然这将解决您遇到的问题,但我建议您废弃此特定视图并使用Form类来处理此问题。表单类将允许您以更简单的方式处理大量此类内容,并提供一些非常需要的验证方法。您可以在此处查看相关文档:https://docs.djangoproject.com/en/1.6/topics/forms/