crashtech

Ruby on Rails, from MVC to GraphQL

As a Ruby on Rails developer, I'm always looking for the best tools and practices to apply to my day-to-day development. This framework has a fantastic structure where all its inner parts communicate very well. But, as applications start growing, or developers want to start using more modern technologies, several things start getting out of control.

Recent versions of Rails implemented Webpack, facilitating the use of modern JavaScript frameworks, which added another level of robustness to everyone's applications. Not only is this becoming the new standard, but it also enables bigger code-bases without falling into madness.

Facebook, as the creator of ReactJS (one of these modern JS frameworks and the most popular one) introduced to the world another of its technologies, GraphQL. This tool, like any other tool, can be a great asset, as long as it's in the right hands, meaning that you first need to know what role it plays before exploring how to use it in your RoR appli

leastbad

Choices.js Stimulus wrapper

https://joshuajohnson.co.uk/Choices/

Soon, this will be published as an NPM package, but there's an absence of documentation right now. It supports almost all functions from the original library; soon it will support 100% of them.

This wrapper adds Ajax pre-fetch search. Happens if controller has a data-search-path attribute.

Stimulus controller targets use new v2 syntax. Controller attaches a reference to itself on the element so that you can access the internal state from external scripts.

iconifyit

/**
 * Converts a flat array to a tree with runtime O(n)
 *
 * Big-O : O(n)
 *
 * This algorithm was taken from Phillip Stanislaus's "Performant Array to Tree"
 * which has O(n) complexity. It builds the tree in a single pass.
 * @link https://github.com/philipstanislaus
 * @link https://www.npmjs.com/package/performant-array-to-tree
 * @see https://github.com/iconifyit/30-Days-of-Algorithms

iconifyit

/**
 * Creates Javascript Model class with getters and setters for each property in a JSON object.
 * For instance, if you call :
 *
 * var model = JsonToModel({name : 'Scott'});
 *
 * You will get back:
 *
 * function() {
 *     this.instance = 'Model@000-000000';

kwent

# db/migrate/20200119064500_add_position_column_to_active_storage_attachments.rb

class AddPositionColumnToActiveStorageAttachments < ActiveRecord::Migration[6.0]
  def change
    add_column :active_storage_attachments, :position, :integer, default: 0
  end
end

JeremiahChurch

class SubdomainConstraint
  # used in routes to generate subdomains

  # note there is a cache buster in company.rb in case the subdomain is updated - `reload_routes`
  # update it if we write any additional cache entries here
  RESERVED_SUB_DOMAINS = %w[
    www app admin test staging help support wwww cdn owner media intercom mail r _domainkey blog webhooks webhook
    hooks api api-test api-staging referral outbound mail webmail w3 mailboxes io heroku inbound google search 
  ].freeze

julianrubisch

class CategoriesController < ApplicationController
  def fields
    render json: Field.where(category_id: params[:id]).order(:id)
  end
end

ryenski

<template>
  <div id="app">
    <p>{{ message }}</p>
  </div>
</template>

<script>
export default {
  data: function () {
    return {

mrmartineau

Stimulus cheatsheet

• Website: https://stimulusjs.org/
• GitHub repo: https://github.com/stimulusjs/stimulus
• Handbook: https://stimulusjs.org/handbook/introduction
• Discourse: https://discourse.stimulusjs.org/

Lifecycle callbacks

• initialize: once, when the controller is first instantiated
• connect: anytime the controller is connected to the DOM

stevenharman

Heroku Release Phase + Review Apps + Rails

This is a simplified, but fairly thorough, set of scripts and configuration to enable Heroku Release Phase for Rails apps. Further, this particular set up plays nicely with Heroku Review Apps in that the release phase script will:

1. Fail, loudly, if the DB does not yet exist.
2. Load the DB schema if the current schema version (as determined by bin/rails db:version) is 0.
3. Run DB migrations otherwise.

For a "normal" app that usually means it will run the DB migrations.