我需要通过向她的电子邮件地址发送激活令牌来注册用户。尝试使用自定义内置函数注册和激活注册她时,我收到此错误(UNIQUE约束失败:auth_user.username)。
我的代码如下:
forms.py
class UserRegisterForm(forms.Form, UserCreationForm):
username = forms.CharField(max_length=20)
date_of_birth = forms.DateField(widget=forms.SelectDateWidget(years=range(2017, 1900, -1)))
email = forms.EmailField()
def clean_username(self):
username = self.cleaned_data.get('username')
if User.objects.filter(username__iexact=username).exists():
raise forms.ValidationError('Username already exists')
return username
def clean_date_of_birth(self):
'''
Only accept users aged 13 and above
'''
userAge = 13
dob = self.cleaned_data.get('date_of_birth')
today = date.today()
if (dob.year + userAge, dob.month, dob.day) > (today.year, today.month, today.day):
raise forms.ValidationError('Users must be aged {} years old and above.'.format(userAge))
return dob
def clean_email(self):
email = self.cleaned_data.get('email')
if User.objects.filter(email__iexact=email).exists():
raise forms.ValidationError('A user has already registered using this email')
return email
def clean_password2(self):
'''
we must ensure that both passwords are identical
'''
password1 = self.cleaned_data.get('password1')
password2 = self.cleaned_data.get('password2')
if password1 and password2 and password1 != password2:
raise forms.ValidationError('Passwords must match')
return password2
views.py
def register(request):
if request.method == 'POST':
form = UserRegisterForm(request.POST)
if form.is_valid():
username = form.cleaned_data.get('username')
email = form.cleaned_data.get('email')
password = form.cleaned_data.get('password1')
new_user = User.objects.create(username=username, email=email, password=password)
new_user = form.save(commit=False)
#new_user.set_password(password) # hashes the password
new_user.is_active = False
new_user.save()
current_site = get_current_site(request)
message = render_to_string('email_activation_link.html', {
'new_user':new_user,
'domain':current_site.domain,
'uid': urlsafe_base64_encode(force_bytes(new_user.pk)),
'token': account_activation_token.make_token(new_user),
})
mail_subject = 'Activate your Frac account.'
#to_email = form.cleaned_data.get('email')
email = form.cleaned_data.get('email')
to_email = EmailMessage(mail_subject, message, to=[email])#[to_email])
to_email.send()
return render(request, 'register_confirm.html', {'form': form})
else:
form = UserRegisterForm()
return render(request, 'register.html', {'form': form})
spec_backend = 'django.contrib.auth.backends.ModelBackend'
def activate(request, uidb64, token):
try:
uid = force_text(urlsafe_base64_decode(uidb64))
new_user = User.objects.get(pk=uid)
except(TypeError, ValueError, OverflowError, User.DoesNotExist):
new_user = None
if new_user is not None and account_activation_token.check_token(new_user, token):
new_user.is_active = True
new_user.save()
return render(request, 'register_complete.html', {})
else:
return render(request, 'registration_incomplete.html', {})
导致此类错误的原因是什么?我在这个平台上研究了类似的帖子,但每个案例都是独一无二的。
答案 0 :(得分:2)
您正在获取唯一约束错误,因为您尝试两次创建同一用户:
new_user = User.objects.create(username=username, email=email, password=password)
new_user = form.save(commit=False)
...
new_user.save()
由于您使用的是模型表单,因此无需手动调用User.objects.create()
。删除该行。您还可以从已清理的数据中删除上面提取用户名,电子邮件和密码的三行。
答案 1 :(得分:0)
不需要这种令人困惑的答案,这是可以添加到 views.py 中的最简单的答案,无论您在哪里处理过注册表。
它只会显示错误而不显示默认值
(*不要复制这个)
UNIQUE constraint failed auth_user.username
if User.objects.filter(username = username).first():
messages.error(request, "This username is already taken")
return redirect('home')