python Django - 以表单访问 request.session
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Django - Access request.session in form
提问by Brant
I am calling a form as follows, then passing it to a template:
我按如下方式调用表单，然后将其传递给模板：
f = UserProfileConfig(request)
I need to be able to access the request.session within the form... so first I tried this:
我需要能够访问表单中的 request.session ......所以首先我尝试了这个：
class UserProfileConfig(forms.Form):
def __init__(self,request,*args,**kwargs):
super (UserProfileConfig,self).__init__(*args,**kwargs)
self.tester = request.session['some_var']
username = forms.CharField(label='Username',max_length=100,initial=self.tester)
This didn't work, I gather, because of when the form is constructed compared to setting the username charfield.
我认为这不起作用，因为与设置用户名字符字段相比，何时构造表单。
So, next I tried this:
所以，接下来我尝试了这个：
class UserProfileConfig(forms.Form):
def __init__(self,request,*args,**kwargs):
super (UserProfileConfig,self).__init__(*args,**kwargs)
self.a_try = forms.CharField(label='Username',max_length=100,initial=request.session['some_var'])
username = self.a_try
To no avail.
无济于事。
Any other ideas?
还有其他想法吗？
回答by Felix Kling
Try this:
试试这个：
class UserProfileConfig(forms.Form):
def __init__(self,request,*args,**kwargs):
super (UserProfileConfig,self).__init__(*args,**kwargs)
self.fields['username'] = forms.CharField(label='Username',max_length=100,initial=request.session['some_var'])
I find this article about dynamic formsvery helpful.
我发现这篇关于动态表单的文章非常有帮助。
回答by 9nix00
I am so surprised that Django use session in form is so hard. sometimes we really need use session data in form to valid fields.
我很惊讶 Django 在表单中使用 session 是如此困难。有时我们真的需要在表单中使用会话数据到有效字段。
I create a small project can solve this. django-account-helper
我创建了一个小项目可以解决这个问题。 django-account-helper
example code:
示例代码：
from account_helper.middleware import get_current_session
Class YourForm(forms.Form):
def clean(self):
session = get_current_session()
if self.cleaned_data.get('foo') == session.get('foo'):
# do something
pass
#... your code
pass
