has_comments

Instalation

1. Install the plugin with script/plugin install git://github.com/fnando/has_comments.git

2. Generate a migration with script/generate migration create_comments and add the following code:

   class CreateComments < ActiveRecord::Migration def self.up create_table :comments do |t| t.text :comment t.references :commentable, :polymorphic => true t.references :user t.timestamps end

    add_index :comments, :commentable_type
    add_index :comments, :commentable_id
    add_index :comments, :user_id
   

   end

   def self.down drop_table :comments end end

3. Run the migrations with rake db:migrate

Usage

1. Add the method call has_comments to your model.

   class Photo < ActiveRecord::Base has_comments end

2. Add this association on your User model:

   class User < ActiveRecord::Base has_many :comments, :dependent => :destroy end

   photo = Photo.find(:first) user = User.find(:first)

   photo.comment(:user => user, :comment => 'Wow! Nice shot!') # => photo.comments # => [] photo.find_users_that_commented # => [] photo.find_comments_by_user(user) # => []

NOTE: You should have a User model. You should also have a comments_count column on your model. Otherwise, this won't work!

Copyright (c) 2008 Nando Vieira, released under the MIT license