注册过程中重复密钥约束唯一约束

Question

重复密钥值违反唯一约束“auth_user_username_key” 详细信息：密钥（用户名）=（）已存在。

models.py

class Profile(User): 
    user = models.OneToOneField(User) 
    mobile = models.CharField(max_length=100, null=True, blank=True) 
    country_code = models.CharField(max_length=100, null=True, blank=True) 
    shipping_street_1 = models.CharField(max_length=100, null=True, blank=True) 
    shipping_street_2 = models.CharField(max_length=100, null=True, blank=True) 
    shipping_city = models.CharField(max_length=100, null=True, blank=True) 
    shipping_state = models.CharField(max_length=100, null=True, blank=True) 
    shipping_country = models.CharField(max_length=100, null=True, blank=True) 
    shipping_zip = models.CharField(max_length=100, null=True, blank=True) 
    shipping_tel = models.CharField(max_length=100, null=True, blank=True) 
    billing_street_1 = models.CharField(max_length=100, null=True, blank=True) 
    billing_street_2 = models.CharField(max_length=100, null=True, blank=True) 
    billing_city = models.CharField(max_length=100, null=True, blank=True) 
    billing_state = models.CharField(max_length=100, null=True, blank=True) 
    billing_country = models.CharField(max_length=100, null=True, blank=True) 
    billing_zip = models.CharField(max_length=100, null=True, blank=True) 
    billing_tel = models.CharField(max_length=100, null=True, blank=True) 

views.py

class SignUpView(FormView): 
    model = models.User 
    template_name = "registration/signup.html" 
    form_class = forms.SignupForm 
    success_url = "/" 

    @method_decorator(csrf_exempt) 
    def dispatch(self, request, *args, **kwargs): 
     return super(SignUpView, self).dispatch(request, *args, **kwargs) 

    def form_valid(self, form): 
     e = models.User.objects.filter(email=self.request.POST.get("signup_email")).first() 
     if e is None: 
      user_obj, created = \ 
       u = models.User.objects.get_or_create(
       email=self.request.POST.get("signup_email"), 
       username=self.request.POST.get("signup_email"), 
      ) 
      user_obj.set_password(self.request.POST.get("signup_password")) 
      user_obj.save() 
      login(self.request, user_obj) 

      models.Profile.objects.create(
       user=user_obj, 
       mobile=self.request.POST.get("signup_mobile"), 
       country_code=self.request.POST.get("signup_country_code") 
      ) 
     return super(SignUpView, self).form_valid(form) 

它工作第一次，但数据库条目是空白。第二次出现这个错误。

forms.py

class SignupForm(forms.Form): 
    signup_email = forms.EmailField(required=True) 
    signup_password = forms.CharField(widget=forms.PasswordInput, required=True) 
    signup_confirm_password = forms.CharField(widget=forms.PasswordInput, required=True) 
    signup_first_name = forms.CharField(required=True) 
    signup_last_name = forms.CharField(required=True) 
    signup_country_code = forms.CharField(required=True) 
    signup_mobile = forms.CharField() 

    def __init__(self, *args, **kwargs): 
     super(SignupForm, self).__init__(*args, **kwargs) 
     self.fields['signup_email'].widget.attrs.update({'placeholder': "Email"}) 
     self.fields['signup_password'].widget.attrs.update({'placeholder': 'Password'}) 
     self.fields['signup_confirm_password'].widget.attrs.update({'placeholder': 'Confirm Password'}) 
     self.fields['signup_first_name'].widget.attrs.update({'placeholder': "First Name"}) 
     self.fields['signup_last_name'].widget.attrs.update({'placeholder': "Last Name"}) 
     self.fields['signup_country_code'].widget.attrs.update({'placeholder': "Country Code"}) 
     self.fields['signup_mobile'].widget.attrs.update({'placeholder': "Mobile Number"}) 

    def clean_signup_confirm_password(self): 
     if self.cleaned_data.get('signup_password') and self.cleaned_data.get('signup_password'): 
      if self.cleaned_data.get('signup_password') != self.cleaned_data.get('signup_confirm_password'): 
       raise forms.ValidationError("The two password fields must match.") 
     return self.cleaned_data['signup_confirm_password'] 

Answer 1

尝试有些编辑您的看法是这样，

def form_valid(self, form): 
    email = form.cleaned_data['signup_email'] 
    password = form.cleaned_data['signup_password'] 
    user, created = models.User.objects.get_or_create(username=email, email=email)   
    if created: 
     user.set_password(password) 
     user.save() 
     models.Profile.objects.create(
      user=user, 
      mobile=form.cleaned_data["signup_mobile"], 
      country_code=form.cleaned_data["signup_country_code"] 
     ) 
    user_obj = authenticate(username=user.username, password=user.password) 
    if user is not None: 
     login(self.request, user_obj)    
    return super(SignUpView, self).form_valid(form)