以下是我的表单代码:
class ConfirmEmailForm(forms.Form):
email = forms.EmailField()
subscribe = forms.IntegerField()
code = forms.CharField(max_length=80)
def clean_subscribe(self):
value = bool(self.cleaned_data['subscribe'])
self.cleaned_data['subscribe'] = value
return value
def clean(self):
cleaned_data = super(ConfirmEmailForm, self).clean()
email = cleaned_data['email']
code = cleaned_data['code']
user = User.objects.filter(username=email).first()
if not user:
raise forms.ValidationError('Email not found')
self.cleaned_data['user'] = user
if user.emailverification.is_key_expired():
raise forms.ValidationError('Link expired, please regenerate')
if not user.emailverification.key == code:
raise forms.ValidationError('Invalid Link')
return cleaned_data
我正在使用此表单进行GET请求。现在当我在没有email
字段的情况下发送请求时,我预计会在cleaned_data
处引发错误,但是它不会引发任何错误,而是我KeyError
下一行。
显然它会引发KeyError
,因为它不存在。但我的问题是,为什么super(ConfirmEmailForm, self).clean()
本身没有提出错误。
以下是完整的追溯:
Environment:
Request Method: GET
Request URL: http://localhost:8000/user/confirm/?code=g&subscribe=1
Django Version: 1.9.6
Python Version: 3.5.1
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'nightreads',
'nightreads.posts',
'nightreads.user_manager']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']
Traceback:
File "/Users/avi/.virtualenvs/nightreads/lib/python3.5/site-packages/django/core/handlers/base.py" in get_response
149. response = self.process_exception_by_middleware(e, request)
File "/Users/avi/.virtualenvs/nightreads/lib/python3.5/site-packages/django/core/handlers/base.py" in get_response
147. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/Users/avi/.virtualenvs/nightreads/lib/python3.5/site-packages/django/views/generic/base.py" in view
68. return self.dispatch(request, *args, **kwargs)
File "/Users/avi/.virtualenvs/nightreads/lib/python3.5/site-packages/django/views/generic/base.py" in dispatch
88. return handler(request, *args, **kwargs)
File "/Users/avi/Documents/code/nightreads/nightreads/user_manager/views.py" in get
54. if form.is_valid():
File "/Users/avi/.virtualenvs/nightreads/lib/python3.5/site-packages/django/forms/forms.py" in is_valid
161. return self.is_bound and not self.errors
File "/Users/avi/.virtualenvs/nightreads/lib/python3.5/site-packages/django/forms/forms.py" in errors
153. self.full_clean()
File "/Users/avi/.virtualenvs/nightreads/lib/python3.5/site-packages/django/forms/forms.py" in full_clean
363. self._clean_form()
File "/Users/avi/.virtualenvs/nightreads/lib/python3.5/site-packages/django/forms/forms.py" in _clean_form
390. cleaned_data = self.clean()
File "/Users/avi/Documents/code/nightreads/nightreads/user_manager/forms.py" in clean
30. email = cleaned_data['email']
Exception Type: KeyError at /user/confirm/
Exception Value: 'email'
为什么会这样?我该如何解决这个问题?在clean
中访问经过验证和清理的数据的正确方法是什么?
答案 0 :(得分:3)
如果clean方法出错,它会将其添加到错误列表中,但不会引发错误。
您可以找到代码行here。
except ValidationError as e:
self.add_error(name, e)
您可以使用cleaned_data.get('email')
来解决此问题,如果找不到该值,则None
会返回{ - 1}},然后您可以检查该值。
答案 1 :(得分:2)
在执行cleaned_data['email']
之前,检查是否存在任何错误。
def clean(self):
cleaned_data = super(ConfirmEmailForm, self).clean()
if any(self.errors):
return self.errors
email = cleaned_data['email']
code = cleaned_data['code']
希望这对你有用。
答案 2 :(得分:0)
我认为这是因为当您使用clean方法时,此方法引发的Any ValidationError不会与特定字段关联;
尝试创建除此之外的自定义。