Hello World

Be Happy!

rails model belongs_to null able

class Article
  include Mongoid::Document
  include Mongoid::Timestamps
  field :title, type: String
  belongs_to :category, optional: true
  has_many :tags, dependent: :destroy
  validates :title, uniqueness: true
  validates :title, presence: true
end

https://blog.bigbinary.com/2016/02/15/rails-5-makes-belong-to-association-required-by-default.html

#rails (38)

List

$ rails credentials:help

x1wins@changwoo.net

$ rails credentials:...... #credentials:help (1) #rails (38)

Add column and Index using ActiveRecord in Rails

x1wins@changwoo.net

$ rails generate mig...... #active_record (1) #alter (1) #add_column (1) #add_index (1) #rails (38)

rails production deploy

x1wins@changwoo.net

RAILS_ENV=production...... #production (1) #deploy (3) #rake (4) #rails (38)

docker-compose Rails and Postgresql

x1wins@changwoo.net

[What-is-PostgreSQL....... #docker-compose (9) #postgresql (5) #docker (30) #rails (38)

asset path in controller

x1wins@changwoo.net

ActionController::Ba...... #ruby (13) #rails (38)

Rails with Docker cheat sheet

x1wins@changwoo.net

rails new command wi...... #kubernetes (1) #docker (30) #rails (38)

Bundler could not find compatible versions

x1wins@changwoo.net

August 18, 2019 Rail...... #rails (38)

rails dockerfile

x1wins@changwoo.net

FROM ruby:2.6.1 RUN...... #dockerfile (3) #rails (38)

migrate rollback

x1wins@changwoo.net

migrate, rollback r...... #docker-compose (9) #docker (30) #rake (4) #rails (38)

rails new project with postgresql database and api only mode

x1wins@changwoo.net

$ rails new [PROJECT...... #rails (38)