据我了解,你要登录的用户,从活动页面,点击一个“邀请其他人”按钮,这表明他的形式,在那里他可以选择特定的用户和组,指定一些文本,然后点击在“发送”上。然后,您的应用程序应创建许多邀请实例(每个用户一个)并发送它们,以跟踪邀请的状态。如果这是正确的,我的建议如下:
使用以下模型可以让您更好地控制数据(只保留一次文本,并允许您查找所有用户的特定邀请):
class EventInvitation(models.Model):
inviter = models.ForeignKey(User, related_name="inviters")
event = models.ForeignKey(Event)
text = models.CharField(max_length= 150)
created = models.DateTimeField(auto_now=True)
class EventInvitationInvitee(models.Model):
event_invitation = models.ForeignKey(EventInvitation)
user = models.ForeignKey(User, related_name="invited")
status = models.IntegerField(choices=INVITATION_STATI, default=0)
使用一个简单的形式是这样的:
from django.contrib.auth.models import User, Group
class InviteForm(forms.Form):
text = forms.CharField(widget=forms.Textarea)
users = forms.ModelMultipleChoiceField(queryset=User.objects.all())
groups = forms.ModelMultipleChoiceField(queryset=Group.objects.all())
def __init__(self, user, *args, **kwargs):
super(InviteForm, self).__init__(*args, **kwargs)
self.fields['users'].queryset = User.objects.filter(...)
self.fields['groups'].queryset = User.objects.filter(...)
替换...
与您的代码来过滤正确的组和用户。
而在这个时尚观点:
def invite(request, event_id):
event = get_object_or_404(Event, pk=event_id) # you can check if your user is allowed to access this event here
if request.method == 'POST':
form = InviteForm(request.user, request.POST)
if form.is_valid():
invitation = EventInvitation.objects.create(inviter=request.user, event=event, text = form.cleaned_data['text'])
users = set()
for user in form.cleaned_data['users']:
users.add(user)
EventInvitationInvitee.objects.create(event_invitation=invitation, user=user)
for group in form.cleaned_data['groups']:
for user in group.user_set.all():
if user not in users:
users.add(user)
EventInvitationInvitee.objects.create(event_invitation=invitation, user=user)
return HttpResponseRedirect('/thanks/') # Redirect after POST
else:
form = InviteForm(request.user)
return render_to_response('invite.html', {'form': form})
更新:
def get_invite_form(user):
class InviteForm(forms.Form):
text = forms.CharField(widget=forms.Textarea)
users = forms.ModelMultipleChoiceField(queryset= ...)
groups = forms.ModelMultipleChoiceField(queryset= ...)
return InviteForm
使用与查询集替换...
:您也可以在这样一个更Python的方式创建一个动态的形式用户参数,以后使用get_invite_form(request.user)(request.POST)
和get_invite_form(request.user)()
而不是InviteForm()
。
来源
2011-06-12 12:38:30
Udi
我不明白你为什么不能使用窗体类的所有邀请。您可以为每个表单实例提供一个不同的用户列表供您选择。 – 2011-06-11 23:43:09