My Learning Ruby on Rails Video Playlist: https://www.youtube.com/playlist?list=PLY6oTPmKnKbYlAqVHgzZl5lou54bizdbV
Setup
This tutorial requires that you've already installed
- ruby
- rails
Create a new rails project
rails new invest_project --api
cd into the invest_project folder
Creating Our Models
Three Models
Investor - Investors who invest in companies
Company - Companies who have investors
Investments - junction of investors and companies
run the following commands...
rails generate scaffold investor name:string
rails generate scaffold company name:string
rails generate scaffold investment investor:references company:references
setup your database
rails db:create
rails db:migrate
Outline your relationships
app/models/investor.rb
class Investor < ApplicationRecord
has_many :investments
has_many :companies, through: :investments
end
app/models/company.rb
class Company < ApplicationRecord
has_many :investments
has_many :investors, through: :investments
end
app/models/investment.rb
class Investment < ApplicationRecord
belongs_to :investor
belongs_to :company
end
Test it out!
rails console
run the following commands
#1 Create a new Investor
bob = Investor.create(name:"Bob")
#2 Invest in a new company
bob.companies.create("abc")
#3 Create a new company
def = Company.create("def")
#4 Add an investor
def.investors.create("Steve")
#5 see the results
Investor.all
Company.all
Invesment.all
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