我在Django项目中使用基于类的视图进行密码重置。我的表单只有一个字段，用户可以在那里写电子邮件地址或用户名。成功提交后，用户可以在同一页面中看到成功消息。我的问题是，提交后我看到空字段，但同时我可以通过单击按钮再次发送数据。 成功提交后如何清除表单字段？我有点不耐烦。
views.py
class PasswordResetRequestView(FormView):
template_name = "registration/password_reset.html"
success_url = '/account/password_reset'
form_class = PasswordResetRequestForm
@staticmethod
def validate_email_address(email):
try:
validate_email(email)
return True
except ValidationError:
return False
def post(self, request, *args, **kwargs):
global data
form = self.form_class(request.POST)
try:
if form.is_valid():
data = form.cleaned_data["email_or_username"]
if self.validate_email_address(data) is True:
associated_users = User.objects.filter(Q(email=data) | Q(username=data))
if associated_users.exists():
for user in associated_users:
c = {
'email': user.email,
'domain': request.META['HTTP_HOST'],
'site_name': 'your site',
'uid': urlsafe_base64_encode(force_bytes(user.pk)),
'user': user,
'token': default_token_generator.make_token(user),
'protocol': 'http',
}
subject_template_name = 'registration/password_reset_subject.txt'
email_template_name = 'registration/password_reset_email.html'
subject = loader.render_to_string(subject_template_name, c)
subject = ''.join(subject.splitlines())
email = loader.render_to_string(email_template_name, c)
send_mail(subject, email, DEFAULT_FROM_EMAIL, [user.email], fail_silently=False)
result = self.form_valid(form)
messages.success(request, 'An email has been sent to ' +
data + ". Please check its inbox to continue reseting password.")
return result
result = self.form_invalid(form)
messages.error(request, 'No user is associated with this email address')
return result
else:
associated_users = User.objects.filter(username=data)
if associated_users.exists():
for user in associated_users:
c = {
'email': user.email,
'domain': 'example.info',
'site_name': 'example',
'uid': urlsafe_base64_encode(force_bytes(user.pk)),
'user': user,
'token': default_token_generator.make_token(user),
'protocol': 'http',
}
subject_template_name = 'registration/password_reset_subject.txt'
email_template_name = 'registration/password_reset_email.html'
subject = loader.render_to_string(subject_template_name, c)
# Email subject *must not* contain newlines
subject = ''.join(subject.splitlines())
email = loader.render_to_string(email_template_name, c)
send_mail(subject, email, DEFAULT_FROM_EMAIL, [user.email], fail_silently=False)
result = self.form_valid(form)
messages.success(request, 'Email has been sent to ' +
data + "'s email address. Please check its inbox to continue reseting password.")
return result
result = self.form_invalid(form)
messages.error(request, _('This username does not exist in the system.'))
return result
except Exception as e:
print(e)
return self.form_invalid(form)
答案 0 :(得分：1)
首先，永远不要使用全局变量。
其次，您可以将帖子逻辑放入form.save()方法中。 IMO在那里更合适，它与Django内Form正在做的事情很接近
这就是class PasswordResetRequestForm(forms.Form):
#We are not using EmailField on purpose
#because you want to treat it
#as a username if its not an email
email = forms.CharField(required=True)
def __init__(self, *args, **kwargs):
#For sending emails we are gonna need the request.
request = kwargs.pop('request')
super(PasswordResetRequestForm, self).__init__(*args, **kwargs)
def clean_email(self):
#You can add form error here if no user exists
email = self.cleaned_data['email']
users = User.objects.filter(Q(email=email)|Q(username=email))
if not users.exists():
self.add_error('email', 'No associated account found')
def send_email(self, user):
c = {
'email': user.email,
'domain': self.request.META['HTTP_HOST'],
'site_name': 'your site',
'uid': urlsafe_base64_encode(force_bytes(user.pk)),
'user': user,
'token': default_token_generator.make_token(user),
'protocol': 'http',
}
subject_template_name = 'registration/password_reset_subject.txt'
email_template_name = 'registration/password_reset_email.html'
subject = loader.render_to_string(subject_template_name, c)
subject = ''.join(subject.splitlines())
email = loader.render_to_string(email_template_name, c)
send_mail(subject, email, DEFAULT_FROM_EMAIL, [user.email], fail_silently=False)
def save(self):
email = self.cleaned_data['email']
users = User.objects.filter(Q(email=email)|Q(username=email))
for user in users:
self.send_email(user)
messages.success(self.request, """An email has been sent to %s.
Please check its inbox to continue reseting password.""" % email
)
课程的样子：
View现在在request，您只需将form.kwarg作为form.save()发送，并在`form.is_valid（）时调用class PasswordResetRequestView(FormView):
template_name = "registration/password_reset.html"
success_url = '/account/password_reset'
form_class = PasswordResetRequestForm
def get_form_kwargs(self, *args, **kwargs):
kwargs = super(PasswordResetRequestView, self).get_form_kwargs(*args, **kwargs)
kwargs['request'] = self.request
return kwargs
def form_valid(self, *args, **kwargs):
form = kwargs['form']
form.save()
return super(PasswordResetRequestView, self).form_valid(*args, **kwargs)
。
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