Object Relations Assessment

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 Restaurant - Customer is a many to many relationship.

If you are not sketching out your domain, and thinking about single source of truth, you are doing it wrong :(

Topics

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

Notes

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.

Deliverables

Build the following methods on the customer class

• Customer.all
  • should return all of the customers
• Customer.find_by_name(name)
  • given a string of a full name, returns the first customer whose full name matches
• Customer.find_all_by_first_name(name)
  • given a string of a first name, returns an array containing all customers with that first name
• Customer.all_names
  • should return an array of all of the customer full names
• Customer#add_review(restaurant, content)
  • given some content and a restaurant, creates a new review and associates it with that customer and that restaurant

Build out the following methods on the Review class

• Review.all
  • returns all of the reviews
• Review#customer
  • returns the customer for that given review
• Review#restaurant
  • returns the restaurant for that given review

Build out the following methods on the restaurant class

• Restaurant.all
  • returns an array of all restaurants
• Restaurant.find_by_name(name)
  • given a string of restaurant name, returns the first restaurant that matches
• Restaurant#reviews
  • returns an array of all reviews for that restaurant
• Restaurant#customers
  • should return all of the customers who have written reviews of that restaurant.