added book update view

bookshelf/views.py

@@ -34,6 +34,16 @@ class BookDetailView(generic.DetailView):
     context_object_name = 'books'
 
 
+class BookUpdateView(generic.UpdateView):
+    model = Books
+    fields = '__all__'
+    template_name = 'bookshelf/edit-book.html'
+
+    def get_success_url(self):
+        return reverse('bookshelf:bookdetailview', kwargs={'pk': self.object.id},
+                       current_app=self.request.resolver_match.namespace)
+
+
 class AuthorListView(generic.ListView):
     model = Author
     template_name = 'bookshelf/authors.html'
@@ -47,7 +57,7 @@ class AuthorCreateView(generic.CreateView):
     template_name = 'bookshelf/add-author.html'
 
     def get_success_url(self):
-        return reverse('bookshelf:authordetailview', kwargs={'pk': self.object.id},
+        return reverse('bookshelf:bookdetailview', kwargs={'pk': self.object.id},
                        current_app=self.request.resolver_match.namespace)