codesnips

callbacks

ruby 
class ShippedEmailJob
  include Sidekiq::Job
  sidekiq_options queue: :mailers, retry: 5

  def perform(order_id)
    order = Order.find_by(id: order_id)

Fan Out Notifications to Email and SMS Using an ActiveRecord Observer

rails activerecord observer
by codesnips 3 tabs
sql 
CREATE TABLE country (
    code       CHAR(2)      PRIMARY KEY,
    name       VARCHAR(128) NOT NULL,
    currency   CHAR(3)      NOT NULL,
    updated_at TIMESTAMPTZ  NOT NULL DEFAULT now()
);

Seeding Reference Data After a Flyway Migration with a Java Callback

flyway spring-boot migrations
by codesnips 3 tabs
ruby 
class AddSlugToPosts < ActiveRecord::Migration[7.1]
  def change
    add_column :posts, :slug, :string, null: false
    add_index :posts, :slug, unique: true
  end
end

Database-Backed Unique Slugs with Retry

rails postgres slugs
by codesnips 4 tabs
ruby 
class AddSlugToArticles < ActiveRecord::Migration[7.1]
  def change
    add_column :articles, :slug, :string
    add_index :articles, :slug, unique: true

    reversible do |dir|

Auto-Generating URL Slugs in Rails with a before_validation Callback and Friendly Finder

rails activerecord slugs
by codesnips 4 tabs
ruby 
class ExportWriter
  def initialize(export)
    @export = export
  end

  def append(rows)

Chaining Dependent GoodJob Jobs with a Callback-Scheduled Continuation

rails good-job background-jobs
by codesnips 3 tabs
ruby 
class Cart < ApplicationRecord
  belongs_to :user, optional: true
  has_many :cart_items, dependent: :destroy

  scope :for_session, ->(token) { where(session_token: token) }
  scope :active, -> { where(merged_at: nil) }

Merge a Guest Cart Into a User's Cart on Login With a Rails Service Object

rails service-object devise
by codesnips 3 tabs