Django错误：create_user（）至少需要2个参数（3） [英] Django error: create_user() takes at least 2 arguments (3 given)

问题描述

我是Django的新手，对于这个愚蠢的问题抱歉，但当我尝试进行用户注册时，我收到这个错误：

  create_user（）在行
 user = User.objects.create_user（user = form ['username']，first_name = form ['first_name']中至少包含2个参数（3） last_name = form ['last_name']，password = form ['password']，email = form ['email']）
  

我的views.py如下：

  def注册（请求）：
 
 context = RequestContext（request）
 
＃检查请求是否包含POST数据
＃当用户提交表单
（如果request.POST：
） print'是一个帖子'
 #create表单对象
 form = RegistrationForm（request.POST）
如果form.is_valid（）：
 print'form is valid'
 user = User.objects.create_user（user = form ['username']，first_name = form ['first_name ']，last_name = form ['last_name']，password = form ['password']，email = form ['email']）
 user.save（）
 #hash密码与set_password方法
 user.set_password（user.password）
 user.save（）
 
打印'保存的用户'
 upc = UserPreferredCities.objects.create（user = User。 object.get（username = user.username），
 city = City.objects.get（city = user.city），）
 upc.save（）
 
 print' 
如果验证（username = user.username，password = user.password）为无：
 print'可以验证'
 print'被认证'
＃return响应并将用户重定向到预订页面
返回HttpResponseRedirect（'/ bookings /'，上下文）
 
＃显示城市选择页面，如果不通过验证。 
 cities = [] 
 all_cities = City.objects.all（）。order_by（'city'）
全部城市中的城市：
 cities.append（city）
 context_dict = get_context_dictionary（request）
 context_dict ['cities'] = cities 
 return render_to_response（'register.html'，context_dict，context）
  

相应的forms.py类如下：

  class RegistrationForm（forms.Form）：
 
 username = forms.CharField（widget = forms.TextInput（attrs = dict（required = True，max_length = 64）））
 email = forms.EmailField （widget = forms.TextInput（attrs = dict（required = True，max_length = 64）））
 first_name = forms.CharField（widget = forms.TextInput（attrs = dict（required = True，max_length = 64）） ）
 last_name = forms.CharField（widget = forms.TextInput（attrs = dict（required = True，max_length = 64）））
 password = forms.CharField（widget = forms.PasswordInput（attrs = dict （required = True，max_length = 64，rend er_value = False）））
 city = forms.CharField（widget = forms.TextInput（attrs = dict（required = True，max_length = 64）））
 
 class Meta：
 model = User 
 fields =（'username'，'email'，'first_name'，'last_name'，'password'，'city'）
 
 def clean_username（self） 
 try：
 User.objects.get（username__iexact = self.cleaned_data ['username']）
除了User.DoesNotExist：
 return self.cleaned_data ['username'] 
 raise forms.ValidationError（该用户名已存在。请尝试另一个。）
  

解决方案

create_user（）函数将用户名作为位置参数：

  user = User。 objects.create_user（
 form ['username']，first_name = form ['first_name']，
 last_name = form ['last_name']，password = form ['password']，
 email = form ['email']）
  

您仍然可以将其作为关键字参数传递，但那么你需要调用它 username ，而不是用户：

  user = User.objects.create_user（
 username = form ['username']，first_name = form ['first_name']，
 last_name = form [' last_name']，password = form ['password']，
 email = form ['email']）
  

I'm a newbie with Django, sorry for the silly question, but I get this error when I try to do the user registration :

create_user() takes at least 2 arguments (3 given) in the line
 user = User.objects.create_user(user=form['username'], first_name=form['first_name'], last_name=form['last_name'], password=form['password'], email=form['email'])

My views.py is the following:

def register(request):

    context = RequestContext(request)

    # check if the request contains POST data
    # this happens when a user submits a form
    if request.POST:
        print 'is a post'
        #create form object
        form = RegistrationForm(request.POST)
        if form.is_valid():
            print 'form is valid'
            user = User.objects.create_user(user=form['username'], first_name=form['first_name'], last_name=form['last_name'], password=form['password'], email=form['email'])
            user.save()
            #hash password with the set_password method
            user.set_password(user.password)
            user.save()

            print 'saved user'
            upc = UserPreferredCities.objects.create(user=User.objects.get(username=user.username),
                                                     city=City.objects.get(city=user.city), )
            upc.save()

            print 'form is saved'
            if authenticate(username=user.username, password=user.password) is None:
                print 'could authenticate'
            print 'is authenticated'
            # return response and redirect user to Bookings page
            return HttpResponseRedirect('/bookings/', context)

    # Show the city selection page if not authenticated.
    cities = []
    all_cities = City.objects.all().order_by('city')
    for city in all_cities:
        cities.append(city)
    context_dict = get_context_dictionary(request)
    context_dict['cities'] = cities
    return render_to_response('register.html', context_dict, context)

The corresponding forms.py class is the following:

class RegistrationForm(forms.Form):

    username = forms.CharField(widget=forms.TextInput(attrs=dict(required=True, max_length=64)))
    email = forms.EmailField(widget=forms.TextInput(attrs=dict(required=True, max_length=64)))
    first_name = forms.CharField(widget=forms.TextInput(attrs=dict(required=True, max_length=64)))
    last_name = forms.CharField(widget=forms.TextInput(attrs=dict(required=True, max_length=64)))
    password = forms.CharField(widget=forms.PasswordInput(attrs=dict(required=True, max_length=64, render_value=False)))
    city = forms.CharField(widget=forms.TextInput(attrs=dict(required=True, max_length=64)))

    class Meta:
        model = User
        fields = ('username', 'email', 'first_name', 'last_name', 'password', 'city', )

    def clean_username(self):
        try:
            User.objects.get(username__iexact=self.cleaned_data['username'])
        except User.DoesNotExist:
            return self.cleaned_data['username']
        raise forms.ValidationError("The username already exists. Please try another one.")

解决方案

The create_user() function takes the username as a positional argument:

user = User.objects.create_user(
    form['username'], first_name=form['first_name'], 
    last_name=form['last_name'], password=form['password'], 
    email=form['email'])

You can still pass it in as a keyword argument, but then you need to call it username, not user:

user = User.objects.create_user(
    username=form['username'], first_name=form['first_name'], 
    last_name=form['last_name'], password=form['password'], 
    email=form['email'])

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