如何扩展Django的＆QUOT;登录＆QUOT;形成？ [英] How do I extend the Django "login" form?

问题描述

所以，现在我做的基本的登录。在urls.py，我去Django的contrib请登录：

So, right now I'm doing the basic login. In urls.py, I go to django contrib login:

(r'^login/?$','django.contrib.auth.views.login',{'template_name':'login.html'}),

这是拍摄到这里：

@csrf_protect
@never_cache
def login(request, template_name='registration/login.html',
          redirect_field_name=REDIRECT_FIELD_NAME,
          authentication_form=AuthenticationForm):

这视图使用AuthenticationForm形式的模型：

That view uses the AuthenticationForm forms model:

class AuthenticationForm(forms.Form):
    """
    Base class for authenticating users. Extend this to get a form that accepts
    username/password logins.
    """
    username = forms.CharField(label=_("Username"), max_length=30)
    password = forms.CharField(label=_("Password"), widget=forms.PasswordInput)

所以... 我的目标是要更改用户名的形式！通过添加这它：部件= forms.TextInput（ATTRS = {'占位'：'用户名'}）。而已。这就是我想要添加到用户名输入框。但是，我并不想改变实际的Django forms.py文件，因为这是Django的contrib请的一部分，我觉得不好更改该文件。

So...my objective is to to change the username form! By adding this to it: widget = forms.TextInput(attrs={'placeholder': 'username'}). That's it. That's all I want to add to the username input box. But, I don't want to change the actual django forms.py file, since that's part of django contrib and I feel bad changing that file.

我该怎么办？我应该创建一个扩展AuthenticationForm一种形式？如果是这样，我怎么导入？我如何传递作为通过我的urls.py参数？我不知道该怎么办。

What do I do? Should I create a form that extends AuthenticationForm? If so, how do I import that? And how do I pass that in as an argument via my urls.py? I don't know what to do.

推荐答案

您需要继承的 AuthenticationForm 类，然后你需要改变你的 urls.py ，

You need to subclass the AuthenticationForm class, and then you need to change your urls.py,

class MyAuthenticationForm(AuthenticationForm):
    # add your form widget here
    widget = .....

然后导入这个类到你的 urls.py 文件并更新调用

(r'^login/?$','django.contrib.auth.views.login',{'template_name':'login.html', 'authentication_form':MyAuthenticationForm}),

我太累了查找的文档站点的链接查看你需要使用什么类型的字段，但是这应该做的伎俩，让你开始，而无需修改Django的的形式。 PY 您绝对应心疼有关更改！

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