## Star rating for Mongoid 4 - MongoidRating

[![Gem Version](https://badge.fury.io/rb/mongoid_rating.png)](http://badge.fury.io/rb/mongoid_rating)
[![Dependency Status](https://gemnasium.com/rs-pro/mongoid_rating.png)](https://gemnasium.com/rs-pro/mongoid_rating)
[![Build Status](https://travis-ci.org/rs-pro/mongoid_rating.png?branch=master)](https://travis-ci.org/rs-pro/mongoid_rating)
[![Coverage Status](https://coveralls.io/repos/rs-pro/mongoid_rating/badge.png)](https://coveralls.io/r/rs-pro/mongoid_rating)

## Currenty this gem supports only Mongoid 4

## Features

  - Multiple rating fields per model
  - Float rating marks (users can give 4.5 stars)
  - Accurate concurrent rating updates with db.eval

## Installation

Add this line to your application's Gemfile:

    gem 'mongoid_rating'

And then execute:

    $ bundle

Or install it yourself as:

    $ gem install mongoid_rating

## Usage

make model rateable:

    class Post
      include Mongoid::Document
      rateable :rate
    end
    ps = Post.create()
    user = User.create()

rate and unrate:
  
    ps.rate 5, user
    ps.unrate, user

Get current rating

    ps.rate
    => 5.0 
    ps.rate_by(user)
    => 5 
    
Check if user rated:

    ps.rate_by?(user)
    => true 

Scopes: 

    Post.rate_in(2..5)
    Post.rate_in(2..5).first
    => #<Post rate_count: 1, rate_sum: 5.0, rate_average: 5.0> 
    Post.rate_in(2..3).first
    => nil 

Posts rated by user:

    Post.rate_by(user).first
    => #<Post rate_count: 1, rate_sum: 5.0, rate_average: 5.0> 

## Credits

(c) 2013 glebtv, MIT license

Partially based on
(mongoid-rateable)[https://github.com/proton/mongoid_rateable]
which is Copyright (c) 2011 Peter Savichev (proton), MIT license

## Contributing

1. Fork it
2. Create your feature branch (`git checkout -b my-new-feature`)
3. Commit your changes (`git commit -am 'Add some feature'`)
4. Push to the branch (`git push origin my-new-feature`)
5. Create new Pull Request