Add missing imports and models to the examples in the view layer documentation

docs/topics/class-based-views/generic-display.txt

@@ -248,7 +248,7 @@ specify the objects that the view will operate upon -- you can also
 specify the list of objects using the ``queryset`` argument::
 
     from django.views.generic import DetailView
-    from books.models import Publisher, Book
+    from books.models import Publisher
 
     class PublisherDetail(DetailView):
 
@@ -326,6 +326,7 @@ various useful things are stored on ``self``; as well as the request
 Here, we have a URLconf with a single captured group::
 
     # urls.py
+    from django.conf.urls import patterns
     from books.views import PublisherBookList
 
     urlpatterns = patterns('',
@@ -375,6 +376,7 @@ Imagine we had a ``last_accessed`` field on our ``Author`` object that we were
 using to keep track of the last time anybody looked at that author::
 
     # models.py
+    from django.db import models
 
     class Author(models.Model):
         salutation = models.CharField(max_length=10)
@@ -390,6 +392,7 @@ updated.
 First, we'd need to add an author detail bit in the URLconf to point to a
 custom view::
 
+    from django.conf.urls import patterns, url
     from books.views import AuthorDetailView
 
     urlpatterns = patterns('',
@@ -401,7 +404,6 @@ Then we'd write our new view -- ``get_object`` is the method that retrieves the
 object -- so we simply override it and wrap the call::
 
     from django.views.generic import DetailView
-    from django.shortcuts import get_object_or_404
     from django.utils import timezone
     from books.models import Author
 

docs/topics/class-based-views/generic-editing.txt

@@ -222,6 +222,7 @@ works for AJAX requests as well as 'normal' form POSTs::
 
     from django.http import HttpResponse
     from django.views.generic.edit import CreateView
+    from myapp.models import Author
 
     class AjaxableResponseMixin(object):
         """

docs/topics/class-based-views/mixins.txt

@@ -258,6 +258,7 @@ mixin.
 We can hook this into our URLs easily enough::
 
     # urls.py
+    from django.conf.urls import patterns, url
     from books.views import RecordInterest
 
     urlpatterns = patterns('',
@@ -440,6 +441,7 @@ Our new ``AuthorDetail`` looks like this::
     from django.core.urlresolvers import reverse
     from django.views.generic import DetailView
     from django.views.generic.edit import FormMixin
+    from books.models import Author
 
     class AuthorInterestForm(forms.Form):
         message = forms.CharField()
@@ -546,6 +548,8 @@ template as ``AuthorDisplay`` is using on ``GET``.
 
 .. code-block:: python
 
+    from django.core.urlresolvers import reverse
+    from django.http import HttpResponseForbidden
     from django.views.generic import FormView
     from django.views.generic.detail import SingleObjectMixin
 
@@ -657,6 +661,8 @@ own version of :class:`~django.views.generic.detail.DetailView` by mixing
 :class:`~django.views.generic.detail.DetailView` before template
 rendering behavior has been mixed in)::
 
+    from django.views.generic.detail import BaseDetailView
+
     class JSONDetailView(JSONResponseMixin, BaseDetailView):
         pass
 
@@ -675,6 +681,8 @@ and override the implementation of
 to defer to the appropriate subclass depending on the type of response that the
 user requested::
 
+    from django.views.generic.detail import SingleObjectTemplateResponseMixin
+
     class HybridDetailView(JSONResponseMixin, SingleObjectTemplateResponseMixin, BaseDetailView):
         def render_to_response(self, context):
             # Look for a 'format=json' GET argument