python - Django CBV form using list of objects -

i trying create form list of cars 1 field being booleanfield. want appear form booleanfield being checkbox. if user checks this, booleanfield set = true , happen when post occurs , user redirected next page.

model.py:

class car(models.model):     year = models.integerfield()     make = models.charfield(max_length=30)     model = models.charfield(max_length=30)     send = models.booleanfield(default=false) 

currenly email.html looks this:

<form action="" method="post">{% csrf_token %}         {% car in object_list %}             <input type="checkbox" name="car" id="car{{ forloop.counter }}" value="{{ car.id }}">              <label for="car{{ forloop.counter }}">{{ car.year }} {{ car.make }} {{ car.model }}</label><br>         {% endfor %}         <input type="submit" value="preview">     </form> 

views.py

class email(listview):     model = car      template_name = 'cars/email.html' 

suggestions?

i ended adding post() function listview processes form data, having trouble redirecting without valid httpresponse object , getting error when 1 of boxes isn't checked in form. here additional post() code added time being:

def post(self, request, *args, **kwargs):     cars = car.objects.all()  # reset "self.send" field == false     in range(len(cars)):         cars[i].send = false         cars[i].save()     cars = car.objects.filter(id__in=request.post.getlist('car'))     in cars:         i.send = true         i.save()     return httpresponseredirect(reverse('cars:email_preview')) 

any suggestions on how make form re-render error msg if no boxes checked?

thanks