Example
There are already implemented forms within Django to change the user password, one example being SetPasswordForm.
There aren't, however, forms to modify the user e-mail and I think the following example is important to understand how to use a form correctly.
The following example performs the following checks:
- E-mail have in fact changed - very useful if you need to validate the e-mail or update mail chimp;
- Both e-mail and confirmation e-mail are the same - the form has two fields for e-mail, so the update is less error prone.
And in the end, it saves the new e-mail in the user object (updates the user e-mail). Notice that the __init__() method requires a user object.
class EmailChangeForm(forms.Form):
"""
A form that lets a user change set their email while checking for a change in the
e-mail.
"""
error_messages = {
'email_mismatch': _("The two email addresses fields didn't match."),
'not_changed': _("The email address is the same as the one already defined."),
}
new_email1 = forms.EmailField(
label=_("New email address"),
widget=forms.EmailInput,
)
new_email2 = forms.EmailField(
label=_("New email address confirmation"),
widget=forms.EmailInput,
)
def __init__(self, user, *args, **kwargs):
self.user = user
super(EmailChangeForm, self).__init__(*args, **kwargs)
def clean_new_email1(self):
old_email = self.user.email
new_email1 = self.cleaned_data.get('new_email1')
if new_email1 and old_email:
if new_email1 == old_email:
raise forms.ValidationError(
self.error_messages['not_changed'],
code='not_changed',
)
return new_email1
def clean_new_email2(self):
new_email1 = self.cleaned_data.get('new_email1')
new_email2 = self.cleaned_data.get('new_email2')
if new_email1 and new_email2:
if new_email1 != new_email2:
raise forms.ValidationError(
self.error_messages['email_mismatch'],
code='email_mismatch',
)
return new_email2
def save(self, commit=True):
email = self.cleaned_data["new_email1"]
self.user.email = email
if commit:
self.user.save()
return self.user
def email_change(request):
form = EmailChangeForm()
if request.method=='POST':
form = Email_Change_Form(user,request.POST)
if form.is_valid():
if request.user.is_authenticated:
if form.cleaned_data['email1'] == form.cleaned_data['email2']:
user = request.user
u = User.objects.get(username=user)
# get the proper user
u.email = form.cleaned_data['email1']
u.save()
return HttpResponseRedirect("/accounts/profile/")
else:
return render_to_response("email_change.html", {'form':form},
context_instance=RequestContext(request))
