ruby 3.2.0 (2022-12-25 revision a528908271) [x86_64-linux]

rails db:migrate

• Start the server: rails s
• Go on https://localhost:3000

• Create a new RoR project: rails new friends
• Create a model named friends and a DB named Friends with the following columns: last_name, first_name, birthdate.

 rails g scaffold friends first_name:string last_name:string birthdate:date
 rails db:migrate

• Manipulate the friend object:

  rails console
  

  • create: Friend.new(first_name:"Roger", last_name:"Rabit")
  • get:
    • one result: Friend.find_by(first_name:"Roger")
    • multiple results: Friend.where(firt_name:"John")
  • update:

    roger = Friend.find_by(id:2)
    roger.update(:birthdate => Date.new(1995,03,10))
    

  • finds with condition: Friend.where("LENGTH(first_name) > 2")
  • delete:

    roger = Friend.find_by(id:2)
    roger.delete
    

• Create HTTP routes to:
  • GET one friend: /friends/[:id]
  • GET all friends: /friends
  • POST: /friends/new
  • PUT/PATCH a friend via an id: /friends/[:id]/edit
  • DELETE 1 user: /friends/[:id]