this is the 'railscasts' way of handling the category checkboxes

2 files changed, 6 insertions, 3 deletions

diff --git a/app/controllers/admin/blog/posts_controller.rb b/app/controllers/admin/blog/posts_controller.rb
index dbf13b2..2b124ba 100644
--- a/app/controllers/admin/blog/posts_controller.rb
+++ b/app/controllers/admin/blog/posts_controller.rb
@@ -1,7 +1,8 @@
 module Admin
   module Blog
     class PostsController < Admin::BaseController
-
+      before_filter :check_category_ids, :only => :update
+      
       crudify :blog_post,
               :title_attribute => :title,
               :order => 'published_at DESC'
@@ -85,6 +86,10 @@ module Admin
       def find_all_categories
         @blog_categories = BlogCategory.find(:all)
       end
+
+      def check_category_ids
+        params[:blog_post][:category_ids] ||= []
+      end
     end
   end
 end
\ No newline at end of file
diff --git a/app/views/admin/blog/posts/_form.html.erb b/app/views/admin/blog/posts/_form.html.erb
index ffb790d..c891b63 100644
--- a/app/views/admin/blog/posts/_form.html.erb
+++ b/app/views/admin/blog/posts/_form.html.erb
@@ -70,8 +70,6 @@
       <ul class='blog_categories'>
         <% @blog_categories.each do |category| %>
           <li>
-             <%= hidden_field_tag 'blog_post[category_ids][]', category.id,
-                               :value => 0 %>
              <%= check_box_tag 'blog_post[category_ids][]', category.id,
                                @blog_post.categories.include?(category),
                                :id => (id="blog_post_category_ids_#{category.id}") %>