ruby-rails

name	ruby-rails
description	Ruby on Rails framework patterns — ActiveRecord, controllers, concerns, service objects, background jobs, and API mode
layer	domain
category	backend
triggers	["ruby","rails","activerecord","ruby on rails","rails api","sidekiq","rails migration"]
inputs	["application requirements","Rails version","database choice"]
outputs	["models","controllers","services","migrations","tests","configuration"]
linksTo	["postgresql","redis","testing-patterns","cicd","docker"]
linkedFrom	["api-designer","authentication"]
preferredNextSkills	["postgresql","testing-patterns"]
fallbackSkills	["api-designer"]
riskLevel	low
memoryReadPolicy	selective
memoryWritePolicy	none
sideEffects	["database migrations","gem installations"]

Ruby on Rails

Purpose

Rails is a full-stack MVC framework optimized for developer productivity with strong conventions. This skill covers modern Rails patterns (Rails 7+), API mode, ActiveRecord best practices, service objects, and background job processing.

Key Patterns

Model — ActiveRecord Best Practices

class Order < ApplicationRecord
  # Associations
  belongs_to :customer
  has_many :order_items, dependent: :destroy
  has_many :products, through: :order_items
  has_one :shipment

  # Validations
  validates :status, presence: true, inclusion: { in: %w[pending confirmed shipped delivered] }
  validates :total_cents, numericality: { greater_than_or_equal_to: 0 }

  # Scopes — keep queries in the model, not controllers
  scope :recent, -> { where("created_at > ?", 30.days.ago) }
  scope :pending, -> { where(status: "pending") }
  scope :with_items, -> { includes(:order_items, :products) }

  # Enum for status
  enum :status, { pending: 0, confirmed: 1, shipped: 2, delivered: 3 }

  
  after_create 

  
   
       pending?
    update!( ,  .current)
  

  

   
    .confirmation().deliver_later