This gem is in early alpha. No guarantee, it will install or work at all, at the moment.
This extension adds easy and straight-forward rating functionality to your Rails app. It also comes with pre-defined views, for the ratings to be displayed as a set of stars.
# Gemfile
gem 'rating_star', git: 'https://github.com/michaelgrohn/rating_star.git'$ bundle$ rails generate ratings
$ rake db:migrate# app/models/movie.rb
is_rateable@movie = Movie.find_by( title: 'The Dark Knight' )
@movie.ratings.create( value: 0.9 )# app/views/movies/show.html.haml
# ⋮
= render @movie.rating
# ⋮This will render something like this on your webpage:
Specify attributions, to easily reference the correspondending model later (not mandatory):
# app/models/movie.rb
is_rateable by: :users# app/models/book.rb
is_rateable by: [ :users, :readers, … ]# app/models/user.rb
is_rater for: [ :movies, :books ]Accessing .rating on a model gives you the average rating, based on all votes. The ratings .value is the actual rating value and ranges form 0..1. .vote_count is the count of given ratings. If it is greater than 1, the rating represents an average rating.
@movie.rating.vote_count
#=> 1
@movie.rating.value
#=> 0.9
@movie.ratings.create( value: 0.8 )
@movie.rating.vote_count
#=> 2
@movie.rating.value
#=> 0.85Ways to access your models:
@movie.ratings
#=> a collection of all ratings
@movie.rating
#=> the average rating (a new object)
@user = User.first
@rating = @movie.ratings.create( value: 1.0, rater: @user )
@rating.rater
#=> the object that gave this rating (nil if not specified)
@rating.item
#=> the object that is being rated
# For the following accessors, you must specifiy is_rateable by: :users, is_rater for: [ :movies, :books ] etc.
@movie.rating_users
#=> a collection of all the users that gave this movie a rating
@user.rated_movies
#=> a collection of all movies, that this user has rated
@user.rated_books
#=> a collection of all books, that this user has rated
@user.rated_books( min: 0.5, max: 0.8 )
#=> a collection of all books, that this user has rated with a rating between 0.5 and 0.8Simply render the rating as stars:
= render @movie.rating # 5 stars default
= render @movie.rating, scale: 4 # 4 stars system
= render @movie.rating, scale: 11 # ours goes up to 11! Enable rating by clicking on the stars:
= render @movie.rating, rateable: true
= render @movie.rating, rateable: true, rater: current_userShow additional information under the stars:
= render @movie.rating, with_vote_count: true
= render @movie.rating, with_value: true # adds "4.5 out of 5"- Fork it ( https://github.com/[my-github-username]/rating_star/fork )
- Create your feature branch (
git checkout -b my-new-feature) - Commit your changes (
git commit -am 'Add some feature') - Push to the branch (
git push origin my-new-feature) - Create a new Pull Request
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