当试图覆盖UserCreationForm时，TypeError [英] TypeError when tried to override the UserCreationForm

问题描述

  from django.contrib.auth我已经使用UserCreationForm的注册表单从django.contrib.auth.models导入的.forms import UserCreationForm 
从django导入的用户
 import form 
 import d 
 from django.core.exceptions import ObjectDoesNotExist 
 
 class UserCreationForm（UserCreationForm）：
 
 
 class Meta：
 model = User 
 fields =（'first_name'，'last_name'，'username' 
 
 error_messages = {
'duplicate_username'：_（具有该电子邮件的用户已存在），
'password_mismatch'：_（两个密码字段didn t匹配），
} 
 
 username = forms.EmailField（label ='Email'，max_length = 250，unique = True）
 
 def save self，commit = True）
 user = super（UserCreationForm，self）.save（commit = False）
 user.email = user.username 
 user.sa ve（）
返回用户
  

但是我收到一个错误：

  Name / at / admin / 
名称'_'未定义
  

所以，我不得不从django.utils.translation导入

 导入gettext为_ 
  

这解决了这个问题。但是现在，在此之后，我已经修复了（我猜这是第一个问题的解决方案），我收到另一个错误：

  TypeError at / admin / 
 __init __（）得到一个意想不到的关键字参数'unique'
  

如果我从 EmailField 中删除​​'unique'，一切都可以正常运行。那么，我从表单中删除 unique = true ？对于每个用户名（这里是其电子邮件），它始终是唯一的，即使我删除它吗？另外还有一件事是从django.utils.translation导入gettext作为_ 的错误名称'_'的适用解决方案未定义 ???我是django的新手。任何帮助将不胜感激！谢谢。

解决方案

unique 不是 forms.EmailField 。你猜我的模型字段令我感到困惑。

你想使用电子邮件字段的用户名吗？如果是这样，请尝试以下方式：

  class UserCreationForm（UserCreationForm）：
 username = forms.EmailField（widget = forms.TextInput（attrs = {'maxlength'：75}），
 label = _（Email））
  

至于您的name_'的查询没有定义：

  from django。 utils.translation import ugettext_lazy as _ 
  

这是从django.contrib.auth.forms代码。 p>

I have a registration form from UserCreationForm, to which I had override with the following:

from django.contrib.auth.forms import UserCreationForm
from django.contrib.auth.models import User
from django import forms
import re
from django.core.exceptions import ObjectDoesNotExist

class UserCreationForm(UserCreationForm):


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

    error_messages = {
        'duplicate_username': _("A user with that email already exists."),
        'password_mismatch': _("The two password fields didn't match."),
    }    

    username = forms.EmailField(label='Email', max_length=250, unique=True)

    def save(self, commit=True):
        user = super(UserCreationForm, self).save(commit=False)
        user.email = user.username
        user.save()
        return user

But I was getting an error:

NameError at /admin/
name '_' is not defined

So, I had to import

from django.utils.translation import gettext as _

And that solved that problem. But now, after that has been fixed (i guess..that was the solution for the first problem), I am getting another error:

TypeError at /admin/
__init__() got an unexpected keyword argument 'unique'

If I remove 'unique' from the EmailField, everything works fine. So, do I remove the unique=true from the form? Will it always be unique for each username(here its email), even though I remove it? And one more thing, was from django.utils.translation import gettext as _ the suited solution for the error name '_' is not defined??? I am a newbie in django. Any help will be greatly appreciated! Thank you.

解决方案

unique is not a parameter for forms.EmailField. You are confusing it with model field I guess.

And you want to use email field for username? If thats the case, try this:

class UserCreationForm(UserCreationForm):
    username = forms.EmailField(widget=forms.TextInput(attrs={'maxlength':75}),
                         label=_("Email"))

And as to your query for "name '_' is not defined" :

from django.utils.translation import ugettext_lazy as _

This is from django.contrib.auth.forms code.

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