acts_as_commentable: A Ruby repository from yas375

= ActsAsCommentable

With this plugin you can simply implement counter of page views.

== Dependencies

awesone_nested_set

== Setup

Install plugin:

./script/plugin install git://github.com/yas375/acts_as_commentable.git

or you can add this plugin as submodule:

git submodule add git://github.com/yas375/acts_as_commentable.git vendor/plugins/acts_as_commentable

Add to your config/environment.rb:

config.gem 'awesome_nested_set'

Create new migration file and insert to it:

class CreateComments < ActiveRecord::Migration
  def self.up
    create_table :comments do |t|
      t.integer :commentable_id
      t.string  :commentable_type
      t.text    :text
      t.integer :author_id
      t.integer :parent_id
      t.integer :lft
      t.integer :rgt

      t.timestamps
    end
  end

  def self.down
    drop_table :comments
  end
end

Run migration and after that make content of app/models/comment.rb like below:

class Comment < ActiveRecord::Base
  attr_accessible :text, :parent_id, :author, :commentable

  belongs_to :commentable, :polymorphic => true
  acts_as_nested_set :scope => [:commentable_id, :commentable_type]

  belongs_to :author, :class_name => 'User'

  validates_presence_of :text, :author, :commentable
end

== Usage

Once you have installed the plugin you can start using it in your ActiveRecord models simply by calling the acts_as_commentable method.

class Post < ActiveRecord::Base
  acts_as_commentable
end

Access all comments for post:

Post.first.comments

You can manipulate with comments as with usual awesome nested set. See documentation for awesome_nester_set for details.