django泛型（类）视图中的多个表单类
我希望使用django 1.3中基于类的通用视图处理表单，但有时必须在一个表单中管理多个表单类。但是，基于FormMixin的现有视图似乎采用单个表单类 通用视图是否可以这样做？我将如何做 编辑：为了澄清，我有一个表单，但有多个（基于模型表单的）类。例如，在django文档中的inline_formset示例中，我想展示一个页面，在该页面中，作者和他的书可以以单一形式同时编辑：django泛型（类）视图中的多个表单类,django,django-forms,django-views,django-class-based-views,Django,Django Forms,Django Views,Django Class Based Views,我希望使用django 1.3中基于类的通用视图处理表单，但有时必须在一个表单中管理多个表单类。但是，基于FormMixin的现有视图似乎采用单个表单类 通用视图是否可以这样做？我将如何做 编辑：为了澄清，我有一个表单，但有多个（基于模型表单的）类。例如，在django文档中的inline_formset示例中，我想展示一个页面，在该页面中，作者和他的书可以以单一形式同时编辑： author_form = AuthorForm(request.POST, instance = author) b
author_form = AuthorForm(request.POST, instance = author)
books_formset = BookInlineFormSet(request.POST, request.FILES, instance=author)
面对类似的问题，我得出结论，这是不可能的 虽然每页有多个表单本身就是一个设计错误，带来了各种各样的麻烦。例如，用户填写两个表单，在其中一个表单上单击submit，然后从另一个表单上丢失数据。解决方法需要复杂的控制器，该控制器需要了解页面上所有表单的状态。（有关相关问题的讨论，另请参见。） 如果每页有多个表单不是您的确切要求，我建议您考虑其他解决方案 例如，通常一次只能向用户显示一个可编辑的表单 在我的例子中，我切换到了
django formwizarddjango formwizarddjango.contrib更新（澄清后）： 不，您也不能使用generic
FormViewiddjango.views.generic.base.Viewget（）post（）Django trac中有一个活动的最近票证。如果一切顺利，Django将添加新的通用视图：
FormSetViewModelFormSetViewInlineFormSetView但是，如果您有一个“母亲”模型，您可以使用标准的
UpdateViewCreateViewget（）post（）表单\u valid（）from django.views.generic import View
class UserRegistrationView(View):
# Here I say which classes i'm gonna use
# (It's not mandatory, it's just that I find it easier)
user_form_class = UserForm
profile_form_class = ProfileForm
template_name = 'user/register.html'
def get(self, request):
if request.user.is_authenticated():
return render(request, 'user/already_logged_in.html')
# Here I make instances of my form classes and pass them None
# which tells them that there is no additional data to display (errors, for example)
user_form = self.user_form_class(None)
profile_form = self.profile_form_class(None)
# and then just pass them to my template
return render(request, self.template_name, {'user_form': user_form, 'profile_form': profile_form})
def post(self, request):
# Here I also make instances of my form classes but this time I fill
# them up with data from POST request
user_form = self.user_form_class(request.POST)
profile_form = self.profile_form_class(request.POST)
if user_form.is_valid() and profile_form.is_valid():
user = user_form.save(commit=False)
user_profile = profile_form.save(commit=False)
# form.cleaned_data is a dictionary which contains data validated
# by fields constraints (Say we have a field which is a number. The cleaning here would
# be to just convert a string which came from the browser to an integer.)
username = user_form.cleaned_data['username']
password = user_form.cleaned_data['password']
# This will be clarified later
# You can save each object individually if they're not connected, as mines are (see class UserProfile below)
user.set_password(password)
user.userprofile = user_profile
user.save()
user = authenticate(username=username, password=password)
if user is not None:
if user.is_active:
login(request, user)
return redirect('user:private_profile')
# else: # form not valid - each form will contain errors in form.errors
return render(request, self.template_name, {
'user_form': user_form,
'profile_form': profile_form
})
用户用户档案Userdjango.contrib.auth.models.UserUserProfileclass UserProfile(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
friends = models.ManyToManyField('self', null=True, blank=True)
address = models.CharField(max_length=100, default='Some address 42')
def get_absolute_url(self):
return reverse('user:public_profile', kwargs={'pk': self.pk})
def __str__(self):
return 'username: ' + self.user.username + '; address: ' + self.address
@receiver(post_save, sender=User) # see Clarification 1 below
def create_user_profile(sender, instance, created, **kwargs):
if created: # See Clarification 2 below
UserProfile.objects.create(user=instance, address=instance.userprofile.address)
@receiver(post_save, sender=User)
def update_user_profile(sender, instance, **kwargs):
instance.userprofile.save()
- 当用户被保存时（我在某处编写了User.save（）（User是类User的实例）），UserProfile也将被保存
- 如果正在创建用户，则创建用户配置文件 其中user=刚才通过UserForm提交的用户实例
- 地址从ProfileForm中收集并添加到用户实例 正在调用user.save（）
from django.views.generic import View
class UserRegistrationView(View):
# Here I say which classes i'm gonna use
# (It's not mandatory, it's just that I find it easier)
user_form_class = UserForm
profile_form_class = ProfileForm
template_name = 'user/register.html'
def get(self, request):
if request.user.is_authenticated():
return render(request, 'user/already_logged_in.html')
# Here I make instances of my form classes and pass them None
# which tells them that there is no additional data to display (errors, for example)
user_form = self.user_form_class(None)
profile_form = self.profile_form_class(None)
# and then just pass them to my template
return render(request, self.template_name, {'user_form': user_form, 'profile_form': profile_form})
def post(self, request):
# Here I also make instances of my form classes but this time I fill
# them up with data from POST request
user_form = self.user_form_class(request.POST)
profile_form = self.profile_form_class(request.POST)
if user_form.is_valid() and profile_form.is_valid():
user = user_form.save(commit=False)
user_profile = profile_form.save(commit=False)
# form.cleaned_data is a dictionary which contains data validated
# by fields constraints (Say we have a field which is a number. The cleaning here would
# be to just convert a string which came from the browser to an integer.)
username = user_form.cleaned_data['username']
password = user_form.cleaned_data['password']
# This will be clarified later
# You can save each object individually if they're not connected, as mines are (see class UserProfile below)
user.set_password(password)
user.userprofile = user_profile
user.save()
user = authenticate(username=username, password=password)
if user is not None:
if user.is_active:
login(request, user)
return redirect('user:private_profile')
# else: # form not valid - each form will contain errors in form.errors
return render(request, self.template_name, {
'user_form': user_form,
'profile_form': profile_form
})
class UserForm(forms.ModelForm):
password = forms.CharField(widget=forms.PasswordInput(render_value=True), required=True)
password_confirmation = forms.CharField(widget=forms.PasswordInput(render_value=True), required=True)
first_name = forms.CharField(required=True)
last_name = forms.CharField(required=True)
class Meta:
model = User
fields = ('email', 'username', 'first_name', 'last_name', 'password', 'password_confirmation')
def clean(self):
cleaned_data = super(UserForm, self).clean()
password = cleaned_data.get("password")
password_confirmation = cleaned_data.get("password_confirmation")
if password != password_confirmation:
self.fields['password'].widget = forms.PasswordInput()
self.fields['password_confirmation'].widget = forms.PasswordInput()
self.add_error('password', "Must match with Password confirmation")
self.add_error('password_confirmation', "Must match with Password")
raise forms.ValidationError(
"Password and Password confirmation do not match"
)
class ProfileForm(forms.ModelForm):
class Meta:
model = UserProfile
fields = ('address',)
class UserForm(forms.ModelForm):
password = forms.CharField(widget=forms.PasswordInput(render_value=True), required=True)
password_confirmation = forms.CharField(widget=forms.PasswordInput(render_value=True), required=True)
first_name = forms.CharField(required=True)
last_name = forms.CharField(required=True)
class Meta:
model = User
fields = ('email', 'username', 'first_name', 'last_name', 'password', 'password_confirmation')
def clean(self):
cleaned_data = super(UserForm, self).clean()
password = cleaned_data.get("password")
password_confirmation = cleaned_data.get("password_confirmation")
if password != password_confirmation:
self.fields['password'].widget = forms.PasswordInput()
self.fields['password_confirmation'].widget = forms.PasswordInput()
self.add_error('password', "Must match with Password confirmation")
self.add_error('password_confirmation', "Must match with Password")
raise forms.ValidationError(
"Password and Password confirmation do not match"
)
class ProfileForm(forms.ModelForm):
class Meta:
model = UserProfile
fields = ('address',)
我希望我能很好地理解你的问题，这将对你（以及其他人）有所帮助 谢谢你的警告。如果我理解正确的话，我的案例有点不同，虽然我只有一个表单，但它代表了多个模型。我编辑了我的问题来澄清它。正是国际扶轮