douglasresende

Rails v5.2 Cheatsheet

Updated by: Scott Borecki

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Please reach out if you have any comments or suggestions for updates!

douglasresende

Rails v7.1.2 Cheatsheet

Updated by: Chris Simmons, based on the 5.2 Cheatsheet by Scott Borecki.

Please reach out if you have any comments or suggestions for updates!

Notes About this Cheatsheet

• This guide uses Rails version v7.1.2. Run rails -v to check your Rails version number.
• Code snippets in this cheatsheet starting with $:
• Run from the terminal, usually within your project directory.

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// ==UserScript==
// @name         Unblur scribd.com
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        https://vi.scribd.com/*
// @grant        none
// ==/UserScript==
(function() {

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tmuxinator

• Config sample (en_US)
• Exemplo de configuração (pt_BR)

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#!/bin/bash
# herein we backup our indexes! this script should run at like 3 AM every first day of the month, after logstash
# rotates to a new ES index and theres no new data coming in to the old one. we grab metadatas,
# compress the data files and backs up to whatever long term storage.

. ./config.sh

echo "Checking that index exist in ES"
if [ `curl -sI $ESURL/$INDEXNAME | grep OK | wc -l` -eq 0 ]
then

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# config to don't allow the browser to render the page inside an frame or iframe
# and avoid clickjacking http://en.wikipedia.org/wiki/Clickjacking
# if you need to allow [i]frames, you can use SAMEORIGIN or even set an uri with ALLOW-FROM uri
# https://developer.mozilla.org/en-US/docs/HTTP/X-Frame-Options
add_header X-Frame-Options SAMEORIGIN;

# when serving user-supplied content, include a X-Content-Type-Options: nosniff header along with the Content-Type: header,
# to disable content-type sniffing on some browsers.
# https://www.owasp.org/index.php/List_of_useful_HTTP_headers
# currently suppoorted in IE > 8 http://blogs.msdn.com/b/ie/archive/2008/09/02/ie8-security-part-vi-beta-2-update.aspx

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defmodule Slug1 do
  def slugify(input), do: map_slug(input, %{pattern: ~r/\s+/})

  def slugify2(input), do: map_slug(input, %{pattern: " "})

  defp map_slug(input, %{pattern: pattern}) do
    input
    |> to_string()
    |> String.trim()
    |> String.downcase()

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raise 'Wrong Ruby version!' unless RUBY_VERSION >= '2.6.0'

module Strings
  Trim = -> str { String(str).strip }
  Replace = -> (sub, new_sub, str) { String(str).gsub(sub, new_sub) }
  LowerCase = -> str { String(str).downcase }
end

                                         # -- Alternative syntax --
Slugify =                                # Slugify =

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Webpack in Rails

All code is available in example app - https://github.com/maxivak/webpacker-rails-example-app

Table of Contents

• NPM and Yarn
• Webpack and Webpacker

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Integrate Gem/Engine and main Rails app

Overview

• Paths
• Routes
• Add functionality to controller
• Improving (Extending or overriding) Engine functionality
• Helpers
• Assets