stevepolitodesign

# app/controllers/post/tags_controller.rb

class Post::TagsController < ApplicationController
  def new
    @tag = Tag.new
  end

  def create
 @tag = Tag.new(tag_params)

stevepolitodesign

irb(main):001* ENV.fetch("NODE_VERSION") do
irb(main):002*   `node --version`
irb(main):003* rescue
irb(main):004*   "1.2.3"
irb(main):005> end
=> "1.2.3"
irb(main):006> exit

~/Desktop took 7s
❯ rails new node_demo \

stevepolitodesign

# app/controllers/secret_messages_controller.rb
class SecretMessagesController < ApplicationController
  def create
    @secret_message_form = SecretMessageForm.new(secret_message_form_params)

    if @secret_message_form.valid?
      encrypted_content = encrypt_content(
        seed_phrase: params[:secret_message_form][:seed_phrase],
        password: params[:secret_message_form][:password],

stevepolitodesign

hash_one = { "name" => "Steve"}
# => {"name"=>"Steve"}
hash_two = { name: "Steve"}
# => {:name=>"Steve"}
hash_one == hash_two
# => false
hash_one.with_indifferent_access == hash_two.with_indifferent_access
# => true

stevepolitodesign

Before

Post.where("published_at < ?", 2.weeks.ago).destroy_all

After

Post.destroy_by("published_at < ?", 2.weeks.ago)

stevepolitodesign

Before

def remember(active_session)
  cookies.permanent.encrypted[:remember_token] = active_session.remember_token
end

After

stevepolitodesign

Rails as_json API Example

Returns a hash representing a model and it's associated data. Useful for building an JSON API.

Associations

class User < ApplicationRecord
  has_many :injuries
  has_many :appointments, through: :injuries

stevepolitodesign

Testing a Generator in a Rails Engine

Testing a generator in a Rails engine can result in unwanted modifications of files in the test/dummy directory.

# lib/generators/my_engine/install_generator.rb
module MyEngine
  module Generators
    class InstallGenerator < Rails::Generators::Base
      source_root File.expand_path("templates", __dir__)

stevepolitodesign

Generator

class DemoGenerator < Rails::Generators::Base
  source_root File.expand_path("templates", __dir__)

  def make_table
    generate "migration", "create_demos_table name:string"
  end
end

stevepolitodesign

Intentionally raise an error that needs to be handled manually

Sometimes there are cases when an actual human needs to intervene during edge cases.

# app/lib/manual_intervention_error.rb
class ManualInterventionError < StandardError
  def initialize(message = "An error occured that needs to be addressed manually")
    super
 end