ProGM

Arel Cheatsheet on Steroids

A (more) complete cheatsheet for Arel, including NamedFunction functions, raw SQL and window functions.

Tables

posts = Arel::Table.new(:posts)
posts = Post.arel_table # ActiveRecord

Table alias

david206

Data from [https://snowflake.medium.com/]

Engineering growth: tracks

Table of Contents

• Mobile
  • Works effectively within established iOS or Android architectures, following current best practices
  • Develops new instances of existing architecture, or minor improvements to existing architecture
• Designs major new features and demonstrates a nuanced understanding of mobile platform constraints

ssaunier

# Sidekiq interaction and startup script
commands:
  create_post_dir:
    command: "mkdir -p /opt/elasticbeanstalk/hooks/appdeploy/post"
    ignoreErrors: true
files:
  "/opt/elasticbeanstalk/hooks/appdeploy/post/50_restart_sidekiq.sh":
    mode: "000755"
    owner: root
    group: root

kevcha

When writing a rails app, we often have to deal with multiple namespaces. The most common case is having classic actions and some others in an admin namespace. Some actions may have same views between namespaces.

For exemple, you could have a ProjectsController with an action index :

class ProjectsController < ApplicationController
  def index
    # do something
  end
end

eliotsykes

require 'rails_helper'

RSpec.describe TodosController, :type => :controller do

  describe "GET #index" do
  #describe "POST #create" do
  #describe "GET #show" do
  #describe "PATCH #update" do (or PUT #update)
  #describe "DELETE #destroy" do
  #describe "GET #new" do

eileencodes

Testing behavior of a CollectionProxy based on :dependent option, delete method used and assocation type (:has_many vs :has_many :through)

:has_many association

class Category < ActiveRecord::Base
	has_many :contacts, through: :categorizations
	has_many :categorizations, dependent: DEPENDENT
end

ngsmrk

stats = Sidekiq::Stats.new

stats.queues

stats.enqueued

stats.processed

stats.failed

troelskn

require 'raven'
require 'rake/task'

if Rails.env.production?
  Raven.configure do |config|
    config.dsn = 'http://xxx:xxx@app.getsentry.com/xxxxx'
  end

  module Rake
    class Task

tomas-stefano

Capybara Actions

# Anchor
click_link 'Save'

# Button
click_button 'awesome'

# Both above

zhengjia

=Navigating=
    visit('/projects')
    visit(post_comments_path(post))

=Clicking links and buttons=
    click_link('id-of-link')
    click_link('Link Text')
    click_button('Save')
    click('Link Text') # Click either a link or a button
    click('Button Value')