! Adding column status to posts table.Adding scope to Post index page…

…. Customze the Show page.Adding Dashboard sections.

aa-blog/app/admin/dashboards.rb

@@ -41,4 +41,17 @@
   # section "Membership Summary", :if => :memberships_enabled?
   # section "Membership Summary", :if => Proc.new { current_admin_user.account.memberships.any? }
 
+  section "Draft posts" do
+    table_for Post.where("status = ?", "Draft") do
+      column(:title) { |post| link_to post.title, admin_post_path(post) }
+      column(:category)
+    end
+  end
+
+  section "Recent published posts" do
+    table_for Post.where("status = ?", "Published") do
+      column(:title) { |post| link_to post.title, admin_post_path(post) }
+      column(:category)
+    end
+  end
 end

aa-blog/app/admin/posts.rb

@@ -1,3 +1,43 @@
 ActiveAdmin.register Post do
+  scope :all, :default => true
+  Post::STATUS.each do |status|
+    scope status.to_sym do |posts|
+      posts.where("status = ?", status)
+    end
+  end
+
+  form do |f|
+    f.inputs "New Post" do
+        f.input :title
+        f.input :status, :as => :select, :collection => Post::STATUS
+        f.input :category
+        f.input :body
+        f.buttons
+    end
+  end
 
+  index do
+    column :title
+    default_actions
+  end
+
+  show do |post|
+    attributes_table do
+      row :title
+      row :category
+      row :status do |post| 
+        status_tag post.status, (post.status == "Published" ? :ok : :warning)
+      end
+      row :body
+    end
+    active_admin_comments
+  end
+
+  sidebar "Other Post for this Category", :only => :show do
+    ul do
+      Post.where("id IS NOT ? AND category_id = ?", resource.id, resource.category.id).each do |post| 
+        li link_to post.title, admin_post_path(post)
+      end
+    end
+  end
 end

aa-blog/app/models/category.rb

@@ -1,4 +1,5 @@
 class Category < ActiveRecord::Base
   attr_accessible :name
   validates :name, :presence => true
+  has_many :posts
 end

aa-blog/app/models/post.rb

@@ -1,5 +1,7 @@
 class Post < ActiveRecord::Base
-  attr_accessible :body, :title, :category_id
+  STATUS = %w(Draft Published)
+  attr_accessible :body, :title, :category_id, :status
   validates :title, :body, :presence => true
+  validates :status, :inclusion => { :in => self::STATUS }
   belongs_to :category
 end

aa-blog/db/migrate/20120719061158_add_status_to_posts.rb

@@ -0,0 +1,5 @@
+class AddStatusToPosts < ActiveRecord::Migration
+  def change
+    add_column :posts, :status, :string
+  end
+end

aa-blog/db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20120710134534) do
+ActiveRecord::Schema.define(:version => 20120719061158) do
 
   create_table "active_admin_comments", :force => true do |t|
     t.string   "resource_id",   :null => false
@@ -58,6 +58,7 @@
     t.datetime "created_at",  :null => false
     t.datetime "updated_at",  :null => false
     t.integer  "category_id"
+    t.string   "status"
   end
 
 end