• Fork and clone as normal
• Commit frequently!
• When you are done:
  • Final commit
  • Push to your github
  • On github, click the green button “Create pull request”
  • Make sure your name is in the comment field, and submit

Ask if you have questions or run into a problem!

For this assignment, we'll be working with a Yelp-style domain.

We have three models: Restaurant, Customer, and Review.

For our purposes, a Restaurant has many Reviews, a Customer has many Reviews, and a Review belongs to a Customer and to a Restaurant.

Restaurant - Customer is a many to many relationship.

Note: You should draw your domain on paper or on a whiteboard before you start coding. Remember to identify a single source of truth for your data.

• Classes and Instances
• Class and Instance Methods
• Variable Scope
• Object Relationships
• Arrays and Array Methods

To get started, run bundle install while inside of this directory.

Build out all of the methods listed in the deliverables. The methods are listed in a suggested order, but you can feel free to tackle the ones you think are easiest. Be careful: some of the later methods rely on earlier ones.

Remember! This code challenge does not have tests. You cannot run rspec and you cannot run learn. You'll need to create your own sample instances so that you can try out your code on your own. Make sure your associations and methods work in the console before submitting.

We've provided you with a tool that you can use to test your code. To use it, run ruby tools/console.rb from the command line. This will start a pry session with your classes defined. You can test out the methods that you write here. You can add code to the tools/console.rb file to define variables and create sample instances of your objects.

Writing error-free code is more important than completing all of the deliverables listed - prioritize writing methods that work over writing more methods that don't work. You should test your code in the console as you write.

Similarly, messy code that works is better than clean code that doesn't. First, prioritize getting things working. Then, if there is time at the end, refactor your code to adhere to best practices. Examples of best practices might be to use higher-level array methods such as map, select, and find when appropriate in place of each, or, when you encounter duplicated logic, to extract it into a shared helper method.

Before you submit! Save and run your code to verify that it works as you expect. If you have any methods that are not working yet, feel free to leave comments describing your progress.

Write the following methods in the classes in the files provided. Feel free to build out any helper methods if needed.

Deliverables use the notation # for instance methods, and . for class methods.

Some of the methods listed are provided to you in the starter code. You should check that they work correctly, and that you understand them.

• Customer#initialize
  • Customer should be initialized with a given name and family name, both strings (i.e., first and last name, like George Washington)"
• Customer#given_name
  • returns the customer's given name
  • should be able to change after the customer is created
• Customer#family_name
  • returns the customer's family name
  • should be able to change after the customer is created
• Customer#full_name
  • returns the full name of the customer, with the given name and the family name concatenated, Western style.
• Customer.all
  • returns all of the customer instances

• Restaurant#initialize
  • Restaurants should be initialized with a name, as a string
• Restaurant#name
  • returns the restaurant's name
  • should not be able to change after the restaurant is created

• Review#initialize
  • Reviews should be initialized with a customer, restaurant, and a rating (a number)
• Review#rating
  • returns the rating for a restaurant.
• Review.all
  • returns all of the reviews

• Review#customer
  • returns the customer object for that review
  • Once a review is created, should not be able to change the customer
• Review#restaurant
  • returns the restaurant object for that given review
  • Once a review is created, should not be able to change the restaurant

• Restaurant#reviews
  • returns an array of all reviews for that restaurant
• Restaurant#customers
  • Returns a unique list of all customers who have reviewed a particular restaurant.

• Customer#restaurants
  • Returns a unique array of all restaurants a customer has reviewed
• Customer#add_review(restaurant, rating)
  • given a restaurant object and a star rating (as an integer), creates a new review and associates it with that customer and restaurant.

• Customer#num_reviews
  • Returns the total number of reviews that a customer has authored
• Customer.find_by_name(name)
  • given a string of a full name, returns the first customer whose full name matches
• Customer.find_all_by_given_name(name)
  • given a string of a given name, returns an array containing all customers with that given name

• Restaurant#average_star_rating
  • returns the average star rating for a restaurant based on its reviews
  • Reminder: you can calculate the average by adding up all the ratings and dividing by the number of ratings

You can find the rubric for this assessment here.