test-callback-order.rb

# frozen_string_literal: true

require "bundler/inline"

gemfile(true) do
  source "https://rubygems.org"

  git_source(:github) { |repo| "https://github.com/#{repo}.git" }

  gem "activerecord", "= 7.1.2"
  gem "pg"
end

require "active_record"
require "logger"

ActiveRecord::Base.establish_connection(
  adapter:  "postgresql",
  database: "callback_order_test",
  encoding: "unicode",
  host:     "localhost",
  port:     "5432",
  password: "postgres",
  username: "postgres"
)

ActiveRecord::Schema.define do
  drop_table "employees" if table_exists?("employees")
  drop_table "projects" if table_exists?("projects")
  drop_table "projects_employees" if table_exists?("projects_employees")

  create_table "employees" do |t|
    t.string "name"
    t.timestamps
  end

  create_table "projects" do |t|
    t.string "title"
    t.timestamps
  end

  create_table "projects_employees" do |t|
    t.references :employee
    t.references :project
  end
end

# Init logs after db is created
ActiveRecord::Base.logger = Logger.new(STDOUT)

class ProjectsEmployee < ActiveRecord::Base
  belongs_to :project
  belongs_to :employee

  after_save do
    puts "ProjectsEmployee after_save #{project.title} #{employee.name}"
  end

  after_commit do
    puts "ProjectsEmployee after_commit #{project.title} #{employee.name}"
  end
end

class Employee < ActiveRecord::Base
  has_many :projects_employees
  has_many :projects, through: :projects_employees

  after_save do
    puts "Employee after_save #{name}"
  end

  after_commit do
    puts "Employee after_commit #{name}"
  end
end

class Project < ActiveRecord::Base
  has_many :projects_employees
  has_many :employees, through: :projects_employees

  after_save do
    puts "Project after_save #{title}"
  end

  after_commit do
    puts "Project after_commit #{title}"
  end
end

puts "Creating Project"

Project.create(
  employees: [
    Employee.new(name: "A"),
    Employee.new(name: "B")
  ],
  title: "P1"
)