问题
file: Capacity/models.py
class Env(models.Model):
name = models.CharField(max_length=50)
def get_absolute_url(self):
return reverse('index')
class Envhosts(models.Model):
env = models.ForeignKey(Env)
hostname = models.CharField(max_length=50)
count = models.IntegerField()
class Meta:
unique_together = ("env","hostname")
def get_absolute_url(self):
return reverse('index')
file: Capacity/views.py
class EnvhostsCreate(CreateView):
model = Capacity.models.Envhosts
fields=['env','hostname','count']
template_name_suffix = '_create_form'
file Capacity/urls.py:
urlpatterns = patterns(........ url(r'^createhosts/(?P<envid>\d+)/$',EnvhostsCreate.as_view(),name='envhosts_create'))
So now,
when i open this form:
/Capacity/createhosts/3/
(where 3 is my env id)
It shows an option of env objects as a drop down list based on the number of object of Env. But i want it to take the env on its own based on the env id ('3' in this case)
I know i have to override some method in class EnvhostsCreate(CreateView). But i m unable to figure out which method and how to take the env based on the part after /createhosts/
回答1:
You can use the pattern described in the documentation for adding request.user - it's the same principle. Remove env
from the fields list, then define form_valid()
:
class EnvhostsCreate(CreateView):
model = Capacity.models.Envhosts
fields = ['hostname', 'count']
template_name_suffix = '_create_form'
def form_valid(self, form):
form.instance.env = Envhosts.objects.get(pk=self.kwargs['envid'])
return super(EnvhostsCreate, self).form_valid(form)
来源:https://stackoverflow.com/questions/20421017/django-createview-customise-form-default-field-based-on-url-parameter