dhh

# autoload concerns
module YourApp
  class Application < Rails::Application
    config.autoload_paths += %W(
      #{config.root}/app/controllers/concerns
      #{config.root}/app/models/concerns
    )
  end
end

runemadsen

Polymorphic Associations reversed

It's pretty easy to do polymorphic associations in Rails: A Picture can belong to either a BlogPost or an Article. But what if you need the relationship the other way around? A Picture, a Text and a Video can belong to an Article, and that article can find all media by calling @article.media

This example shows how to create an ArticleElement join model that handles the polymorphic relationship. To add fields that are common to all polymorphic models, add fields to the join model.

endymion

class Contact < ActiveRecord::Base

  ...

  def after_create
    if Hook.hooks_exist?('new_contact', self)
      Resque.enqueue(Hook, self.class.name, self.id)
      # To trigger directly without Resque: Hook.trigger('new_contact', self)
    end
  end

shahariaazam

<?php

require_once __DIR__ . '/../vendor/autoload.php';

use Slim\Environment;


class RoutesTest extends PHPUnit_Framework_TestCase
{

mlanett

HTTP status code symbols for Rails

Thanks to Cody Fauser for this list of HTTP responce codes and their Ruby on Rails symbol mappings.

Status Code Symbol
1xx Informational
100 :continue
101 :switching_protocols
102 :processing

raghubetina

Ransack Cheatsheet

The Ransack gem provides us with a powerful, flexible, easy-to-integrate search/filter form.

Installation

In your Gemfile, include

gem 'ransack'

ChuckJHardy

class MyJob < ActiveJob::Base
  queue_as :urgent

  rescue_from(NoResultsError) do
    retry_job wait: 5.minutes, queue: :default
  end

  def perform(*args)
    MyService.call(*args)
  end

eiwi1101

%h1 All Users
- table_for User.all do
  - column "Username" => :username
  - column "Email"    => ->(m) { mail_to m.email }
  - column "Notes"    => :notes

leastbad

This is all you really need to know in order to make Action Mailbox work in development.

1. Fire up ngrok http 3000 and make note of your subdomain for steps 3 and 8.
2. Create a Mailgun account because they offer sandbox addresses; grab your domain from the Dashboard.
3. Go into Receiving and create a catch-all route pointing to: https://XXX.ngrok.io/rails/action_mailbox/mailgun/inbound_emails/mime
4. Add your Mailgun API key to your credentials:

action_mailbox:
 mailgun_api_key: API KEY HERE

naoufalelh

Rails Active Storage Cheatsheet

• Rails Active Storage Cheatsheet
  • Install Active Storage
  • Usage
    • Model
    • Controller
    • Views (in ERB)
    • Display Image and its variants or Preview (PDF or Video)
• Install this libraries first