Multiple forms in django

I have an account page where I have three forms. A user can change his name, his email address, and his password.

There are two difficulties I am having from trying to do this:

1) the request.user information is not updating accordingly (e.g., it will lag behind by one change or it will update if the form is not validated)

2) I have three separate forms, however, when I submit one form, I will get validation messages from another form. For example, if I submit the "Change Name" form, I will get 'This field is required from the password fields in the password form. Here is what I currently have --

in forms:

# in forms.py
from django.contrib.auth.models import User

class ChangeNameForm(ModelForm):
    first_name = forms.CharField(required=True)
    last_name = forms.CharField(required=True)
    class Meta:
        model = User
        fields = ('first_name', 'last_name' )

class ChangeEmailForm(ModelForm):
    email = forms.EmailField(required=True)
    class Meta:
        model = User
        fields = ('email',)

in views:

```
@login_required
def account(request):
name_message = password_message = email_message = ''
change_name_form = ChangeNameForm(data=request.POST or None, instance=request.user)
change_password_form = PasswordChangeForm(data=request.POST or None, user = request.user)
change_email_form = ChangeEmailForm(data=request.POST or None, instance=request.user)
if request.method == "POST":
if "change_name" in request.POST and change_name_form.is_valid():
change_name_form.save()
name_message = 'Your name has been changed.'
if "change_password" in request.POST and change_password_form.is_valid():
change_password_form.save()
password_message = 'Your password has been changed.'
if "change_email" in request.POST and change_email_form.is_valid():
...
email_message = 'Please click the link in your email to confirm changes.'

Somewhere on "Stack Overflow" was question like your.

Main idea was remove None from form initialization.

if "change_name" in request.POST:
    change_name_form = ChangeNameForm(data=request.POST, instance=request.user)
    if change_name_form.is_valid():
        change_name_form.save()
        name_message = 'Your name has been changed.'
else:
    change_name_form = ChangeNameForm(instance=request.user)

if "change_password" in request.POST:
    change_password_form = PasswordChangeForm(user=request.user)
    if change_password_form.is_valid():
        change_password_form.save()        
        password_message = 'Your password has been changed.'
else:
    change_password_form = PasswordChangeForm(user=request.user)

if "change_email" in request.POST:
    change_email_form = ChangeEmailForm(request.POST, instance=request.user)
    if change_email_form.is_valid():
        ...
        email_message = 'Please click the link in your email to confirm changes.'
else:
    change_email_form = ChangeEmailForm(instance=request.user)

This is my solution. I hope it's help you.

StackExchange Code Review Q#2857, answer score: 5