How to setup a rating feature in rails application.

The best and simple way of doing so is by using RAILS GEM ratyrate by following simple steps.

Step 1: Include GEM in your gem file

gem 'ratyrate'

Step 2:  Generate rating in respect of user by

$ rails g ratyrate User

Step 3: (Optional) Using with device

$ rails g devise:install

$ rails g devise user

$ rails g ratyrate user # => user is the model generated by devise

Step 4: Adding the ratyrate Associations

Open the Movie model, or whatever MODEL you want to add the starring to, and paste the following code:

ratyrate_rateable 'visual_effects', 'original_score', 'director', 'custome_design'

Step 5: You also need to define the model which will provide the actual rating. For our MovieStore application, it is the User model, so add the following code to it:

ratyrate_rater

Step 6: Migrate the database

$ rake db:migrate

Step 7: Use it in the view level by the following code and remove whichever field is not needed as per your requirements:

<div class="row">
  <div class="small-2 large-2 columns">
    <%= imdb_style_rating_for @movie, current_user%>
  </div>
  <br>
  <div class="small-2 large-4 columns">
    <% if current_user %>
      Visual Effects: <%= rating_for @movie, "visual_effects" %>
      <br>
      Original Score: <%= rating_for @movie, "original_score" %>
      <br>
      Director: <%= rating_for @movie, "original_score" %>
      <br>
      Custome Design: <%= rating_for @movie, "custome_design" %>
    <% end %>
  </div>
</div>

NOTE: If you want to use IMDB like rating average and auto hide stars after staring use following:

<strong>Review Score: </strong><%= rating_for @event, "original_score", disable_after_rate: true, imdb_avg: true %>