我正在尝试创建表单,用于添加新朋友/更新现有朋友。我的第一个解决方案使用ModelForm,但来自更新表单的数据未保存。另外一个问题是我的模型有CharFields('code','pid'),我需要通过我的表单验证regex。如果我在Meta中排除这些字段,并将它们添加到FriendForm,那么在加载表单时我没有数据。
def add_friend(request):
userprofile = UserProfile.objects.get(user=request.user)
if request.method == 'POST':
form = FriendForm(request.POST, request.FILES,)
if form.is_valid():
form.save()
next = reverse('user_profile',)
return HttpResponseRedirect(next)
else:
form = FriendForm()
return render_to_response('user/data_operations/add_friend.html', {
'form':form, 'user':request.user,
}, context_instance=RequestContext(request))
def edit_friend(request, id):
userprofile = UserProfile.objects.get(user=request.user)
friend = get_object_or_404(Friend, id=id)
if friend.friend_of.id!=userprofile.id:
raise Http404
if request.method == 'POST':
form = FriendForm(request.POST, request.FILES, instance=friend)
if form.is_valid():
form.save()
return HttpResponseRedirect(reverse('user_profile',))
else:
form = FriendForm(instance=friend)
return render_to_response('user/data_operations/edit_friend.html', {
'form': form, 'user': request.user, 'friend': friend,
}, context_instance=RequestContext(request))
class FriendForm(forms.ModelForm):
class Meta:
model = Friend
exclude = ( 'friend_of',)
第二个解决方案使用forms.Form。这里的问题是我无法将实例发送到我的表单,因此我无法获取要编辑的数据。因此,我无法检查我的保存方法是否有效以及此解决方案是否更好。
def add_friend(request):
userprofile = UserProfile.objects.get(user=request.user)
count = 0
if request.method == 'POST':
form = FriendForm(request.POST, request.FILES,)
if form.is_valid():
form.save(user=userprofile)
next = reverse('user_profile',)
return HttpResponseRedirect(next)
else:
form = FriendForm()
return render_to_response('user/data_operations/add_friend.html', {
'form':form, 'user':request.user,
}, context_instance=RequestContext(request))
def edit_friend(request, id):
userprofile = UserProfile.objects.get(user=request.user)
friend = get_object_or_404(Friend, id=id)
if friend.friend_of.id!=userprofile.id:
raise Http404
if request.method == 'POST':
form = FriendForm(request.POST, request.FILES, instance=friend)
if form.is_valid():
form.save(user=userprofile)
return HttpResponseRedirect(reverse('user_profile',))
else:
form = FriendForm()
return render_to_response('user/data_operations/edit_friend.html', {
'form': form, 'user': request.user, 'friend': friend,
}, context_instance=RequestContext(request))
class FriendForm(forms.Form):
first_name = forms.CharField(widget=forms.TextInput(attrs=dict(attrs_dict, maxlength=50)), label="First name")
last_name = forms.CharField(widget=forms.TextInput(attrs=dict(attrs_dict, maxlength=50)), label="Last name")
pid = forms.RegexField(regex=r'^\d{11}', max_length=11 ,widget=forms.TextInput(attrs=dict(attrs_dict, maxlength=50)))
image = forms.ImageField(label="Image", required=False)
street = forms.CharField(widget=forms.TextInput(attrs=dict(attrs_dict, maxlength=50)), label="Street")
number = forms.CharField(widget=forms.TextInput, label="House/flat number")
code = forms.RegexField(regex=r'^\d{2}[-]\d{3}', max_length=6, widget=forms.TextInput(attrs=attrs_dict), label="Postal code")
city = forms.CharField(widget=forms.TextInput, label="City")
def save(self, user):
if self.is_valid():
from accounts.models import Friend
new_friend = Friend(**self.cleaned_data)
new_friend.friend_of = user
new_friend.save()
return new_friend
以下是我使用的模型:
class UserProfile(models.Model):
(...)
user = models.ForeignKey(User, unique=True, related_name='profile')
class Friend(models.Model):
(...)
friend_of = models.ForeignKey(UserProfile, related_name='friend_of')
我怎样才能使这个工作?我的编辑用户表单(使用模型方法)没有任何问题:/
答案 0 :(得分:0)
muntu -
坚持使用选项1,即使它需要一点点工作 - 这是一个更健全的方法,并提供更多的灵活性。我认为问题在于friend_of
上的Friend
字段 - 您已将其设为必填字段,因此如果没有该字段,则无法保存Friend
,但您也不能t在代码中为它提供一个值。 (参见django online documentation中的咨询说明。)
使用这些指南,请在验证/保存部分中尝试此代码:
if form.is_valid():
friend = form.save(commit=False)
friend.friend_of = userprofile # (or whatever the user variable is)
friend.save()
请评论这是否有效或出现了什么问题。