For this assignment, we'll be building out Netflix! A viewer has left many ratings on movies, and a movie has been rated by many views.

As always, make sure to sketch out your domain and think about the single source of truth for your data.

• Classes vs Instances
• Variable Scope ( Class, Instance, Local )
• Object Relationships
• Arrays and Array Methods
• Class Methods

Your goal is to build out all of the methods listed in the deliverables. Do your best to follow Ruby best practices. For example, use higher-level array methods such as map, select, and find when appropriate in place of each

We've provided you with a console that you can use to test your code. To enter a console session, run ruby tools/console.rb. You'll be able to test out the methods that you write here.

To Submit - once you've completed all the deliverables, please copy/paste your three class definitions into the solution.rb file. Please don't submit the lab until we give you the signal.

Build the following methods on the viewer class

• Viewer.all
  • should return all of the viewers
• Viewer.find_by_name(name)
  • given a string of a full name, returns the first customer whose full name matches
• Viewer#create_rating
  • given a score and a movie, creates a new Rating and associates it with that viewer and that movie

Build out the following methods on the Rating class

• Rating.all
  • returns all of the ratings
• Rating#viewer
  • returns the viewer for that given rating
• Rating#movie
  • returns the movie for that given rating

Build out the following methods on the movie class

• Movie.all
  • returns an array of all movies
• Movie.find_by_title(title)
  • given a string of movie title, returns the first movie that matches
• Movie#ratings
  • returns an array of all ratings for that movie
• Movie#viewers
  • should return all of the viewers who have left ratings for that movie.
• Movie#average_rating
  • should return the average of all of the scores for the ratings of that particular movie.