将参数传递给Django中的ListView

Question

I have a HTML drop list with certain values that I want to pass to my generic view in order to return a filtered list.

The class:

 class filteredListView(generic.ListView): template_name = 'guestlist/guestlist.html' def get_queryset(self, **kwargs): relation = kwargs.get('relation', None) if relation == 'all': return Guest.objects.all() if relation == 'grooms_side': return Guest.objects.filter(grooms_side=True) if relation == 'brides_side': return Guest.objects.filter(brides_side=True) if relation == 'friends': return Guest.objects.filter(friends=True) 

html block:

 <th colspan="4"> <label>Filter by Relation <select onchange="location='filtered'"> <option value="all">All</option> <option value="grooms_side">Groom's Side</option> <option value="brides_side">Brides's Side</option> <option value="friends">Friends</option> </select> </label> </th> 

I've tried passing the value with a normal href like a regular view but that gave me a NoReverseMatch exception.

urls.py:

 from django.conf.urls import url from . import views app_name = 'guestlist' urlpatterns = [ # /guestlist/ url(r'^$', views.indexView.as_view(), name='index'), # /guestlist/ url(r'^guestlist/$', views.guestListView.as_view(), name='guestlist'), # /guestlist/add url(r'^guestlist/add/$', views.guestCreate.as_view(), name='add'), # /guestlist/filtered url(r'^guestlist/filtered$', views.filteredListView.as_view(), {'relation': 'relation'}, name='filtered'), ] 

My question is how do i pass the value from the drop list's options to the view. Thanks.

Edit: I've changed a few things according to one of the answers but the question still stands. What do I put in the dict in urls.py in order to pass the value?

Answer 1

You need to use a form to send the value from the dropdown to the filter view. And there is no reason to put anything in the URL pattern itself.

url(r'^guestlist/filtered$', views.filteredListView.as_view(), name='filtered'),


<th colspan="4">
  <form action="{% url filtered %}" method="GET">
  <label>Filter by Relation
    <select name="relation">
      <option value="all">All</option>
      <option value="grooms_side">Groom's Side</option>
      <option value="brides_side">Brides's Side</option>
      <option value="friends">Friends</option>
    </select>
  </label>
  <input type="submit" value="Filter">
  </form>
</th>

and in the view:

def get_queryset(self, **kwargs):
    relation = self.request.GET.get('relation', None)
    ...