详解Django通用视图中的函数包装

urlpatterns = patterns('',
 (r'^publishers/$', list_detail.object_list, publisher_info),
 **(r'^books/(\w+)/$', books_by_publisher),**
)

from django.shortcuts import get_object_or_404
from django.views.generic import list_detail
from mysite.books.models import Book, Publisher

def books_by_publisher(request, name):

 # Look up the publisher (and raise a 404 if it can't be found).
 publisher = get_object_or_404(Publisher, name__iexact=name)

 # Use the object_list view for the heavy lifting.
 return list_detail.object_list(
  request,
  queryset = Book.objects.filter(publisher=publisher),
  template_name = 'books/books_by_publisher.html',
  template_object_name = 'book',
  extra_context = {'publisher': publisher}
 )

from mysite.books.views import author_detail

urlpatterns = patterns('',
 # ...
 **(r'^authors/(?P<author_id>\d+)/$', author_detail),**
 # ...
)

import datetime
from django.shortcuts import get_object_or_404
from django.views.generic import list_detail
from mysite.books.models import Author

def author_detail(request, author_id):
 # Delegate to the generic view and get an HttpResponse.
 response = list_detail.object_detail(
  request,
  queryset = Author.objects.all(),
  object_id = author_id,
 )

 # Record the last accessed date. We do this *after* the call
 # to object_detail(), not before it, so that this won't be called
 # unless the Author actually exists. (If the author doesn't exist,
 # object_detail() will raise Http404, and we won't reach this point.)
 now = datetime.datetime.now()
 Author.objects.filter(id=author_id).update(last_accessed=now)

 return response

def author_list_plaintext(request):
 response = list_detail.object_list(
  request,
  queryset = Author.objects.all(),
  mimetype = 'text/plain',
  template_name = 'books/author_list.txt'
 )
 response["Content-Disposition"] = "attachment; filename=authors.txt"
 return response