ActsAsRateable

A Rails 3.2 ready gem that adds rateable functionality to models.

Install

• gem 'lessonplanet-acts_as_rateable', :require => 'acts_as_rateable'
• Create a new rails migration and add the following self.up and self.down methods

  def self.up
    create_table "ratings", :force => true do |t|
      t.column "rating", :integer, :default => 0
      t.column "created_at", :datetime, :null => false
      t.column "rateable_type", :string, :limit => 15, :default => "", :null => false
      t.column "rateable_id", :integer, :default => 0, :null => false
      t.column "user_id", :integer, :default => 0, :null => false
    end

    add_index "ratings", ["user_id"]
  end

  def self.down
    drop_table :ratings
  end

Usage

Make you ActiveRecord model act as rateable:

 class Model < ActiveRecord::Base
    acts_as_rateable
 end

Add a rating to a model instance:

 object.rate_it 1, current_user

Get average rating:

 Model.last.rating