嗨，我正在处理一个表单来编辑用户的个人资料。成功提交后，它会正确更新字段，而不会出现任何验证错误。我遇到的问题是，如果表单在提交时确实返回验证错误并且我更改了表单上的名称，则模板将显示此新名称而不是旧名称。我假设这是因为它使用 POST 请求提供的用户上下文。在表单实际成功提交之前，有没有办法正确显示用户的旧名称？下面是我的代码。
forms.py
from django import forms
from django.contrib.auth.models import User
from django.contrib.auth.forms import UserCreationForm
from django.forms import ModelForm
class UserProfileForm(UserCreationForm):
first_name = forms.CharField(label="First Name", required=True)
last_name = forms.CharField(label="Last Name", required=True)
email = forms.EmailField(label="Email", required=True)
class Meta:
model = User
fields = ("first_name", "last_name", "email", "username", "password1", "password2")
def clean_email(self):
email = self.cleaned_data.get('email')
if email:
if User.objects.filter(email=email).exists():
raise forms.ValidationError('This email is already in use.')
return email
def save(self, commit=True):
user = super(UserProfileForm, self).save(commit=False)
user.email = self.cleaned_data["email"]
if commit:
user.save()
return user
class EditProfileForm(ModelForm):
first_name = forms.CharField(label="First Name", required=True)
last_name = forms.CharField(label="Last Name", required=True)
email = forms.EmailField(label="Email", required=True)
password1 = forms.CharField(label="New Password", widget=forms.PasswordInput)
password2 = forms.CharField(label="Repeat New Password", widget=forms.PasswordInput)
class Meta:
model = User
fields = ("first_name", "last_name", "email", "username", "password1", "password2")
def clean_email(self):
email = self.cleaned_data.get('email')
if email:
if User.objects.filter(email=email).exists():
raise forms.ValidationError('This email is already in use.')
return email
def save(self, commit=True):
user = super(EditProfileForm, self).save(commit=False)
user.email = self.cleaned_data['email']
if commit:
user.save()
return user
views.py
def register(request):
if request.method == 'POST':
form = UserProfileForm(request.POST)
if form.is_valid():
form.save()
new_user = authenticate(username=form.cleaned_data['username'],
password=form.cleaned_data['password1'])
login(request, new_user)
return redirect('/overview')
else:
if request.user.is_authenticated():
return redirect('/overview')
else:
form = UserProfileForm()
return render(request, "/register.html", {'form': form})
@login_required
def edit_profile(request):
if request.method == 'POST':
print request.POST
form = EditProfileForm(request.POST, instance=request.user)
if form.is_valid():
form.save()
return redirect('/profile')
else:
form = EditProfileForm()
return render(request, '/edit_profile.html', {'form': form})
导航栏.html
<li class="">
<a href="javascript:;" class="user-profile dropdown-toggle" data-toggle="dropdown" aria-expanded="false">
<img src="/ui/assets/images/user.png" alt="">{{ user.first_name }} {{ user.last_name }}
<span class=" fa fa-angle-down"></span>
</a>
<ul class="dropdown-menu dropdown-usermenu pull-right">
<li><a href="/profile/"> Profile</a></li>
<li><a href="/logout/"><i class="fa fa-sign-out pull-right"></i> Log Out</a></li>
</ul>
</li>
从数据库中获取要与表单一起使用的用户的单独实例。这样，在验证表单时不会修改request.user。
user = User.objects.get(id=request.user.id)
form = EditProfileForm(request.POST, instance=user)