为什么我的表格总是不受约束？

I am new to Django, and I am trying to use django-friends in my website.

我是Django的新手，我正在尝试在我的网站上使用django-friends。

Here is a form from django-friends:

这是来自django-friends的表格：

>>> from django import forms
>>> class UserForm(forms.Form):
...     
...     def __init__(self, user=None, *args, **kwargs):
...         self.user = user
...         super(UserForm, self).__init__(*args, **kwargs)
... 
>>> f = UserForm({})
>>> f.is_bound
False

The document said that "passing an empty dictionary creates a bound form with empty data", but why the result is unbound (f.is_bound is False)?

文档说“传递一个空字典会创建一个带有空数据的绑定表单”，但为什么结果是未绑定的（f.is_bound是False）？

Thank you so much!

非常感谢！

2 个解决方案

#1

What is happenning here is that UserForm uses the first argument (user) to initalize its internal state, so it doesn't pass anything to forms.Form. To get the expected behaviour, you can pass an extra argument:

这里发生的是UserForm使用第一个参数（user）初始化其内部状态，因此它不会将任何内容传递给forms.Form。要获得预期的行为，您可以传递一个额外的参数：

>>> f = UserForm(None, {})
>>> f.is_bound
True

#2

Your __init__ statement is swallowing the first argument.

你的__init__声明正在吞下第一个参数。

Remove user=None from your init statement, and perhaps pull it from the kwargs instead.

从init语句中删除user = None，也许从kwargs中取出它。

class UserForm(forms.Form):
    def __init__(self, *args, **kwargs):
        self.user = kwargs.pop('user', None)
        super(UserForm, self).__init__(*args, **kwargs) 
        # now the form is actually receiving your first argument: args[0] == {}

#1

>>> f = UserForm(None, {})
>>> f.is_bound
True

#2