Andrejs Eisaks coderxin

An incomplete cheatsheet for rails 3. Things are added as they are required.

Active Record validations

# http://guides.rubyonrails.org/active_record_validations_callbacks.html

class SomeClass < ActiveRecord::Base

  # length

Copied from http://code.lancepollard.com/complete-list-of-html-meta-tags/

Basic HTML Meta Tags

<meta charset='UTF-8'>
<meta name='keywords' content='your, tags'>
<meta name='description' content='150 words'>
<meta name='subject' content='your website's subject'>
<meta name='copyright' content='company name'>

Primary differences between SSH and HTTPS. This post is specifically about accessing Git repositories on GitHub.

Protocols to choose from when cloning:

plain Git, aka git://github.com/

Does not add security beyond what Git itself provides. The server is not verified.

If you clone a repository over git://, you should check if the latest commit's hash is correct.

Project Title

One Paragraph of project description goes here

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

Prerequisites

Install with Homebrew

brew install redis

Set up launchctl to auto start redis

$ ln -sfv /usr/local/opt/redis/*.plist ~/Library/LaunchAgents

/usr/local/opt/redis/ is a symlink to /usr/local/Cellar/redis/x.y.z (e.g., 2.8.7)

	COUNTRIES = [
	"Afghanistan",
	"Aland Islands",
	"Albania",
	"Algeria",
	"American Samoa",
	"Andorra",
	"Angola",
	"Anguilla",
	"Antarctica",

	# Amadeusz Juskowiak <[email protected]> 2012 - MIT License

	# 1. Put inside helpers do .. end
	# 2. Set CACHE_DIR to somewhere writable and private (like CACHE_DIR=File.dirname(__FILE__) + '/tmp'
	# 3. Use it! You can use fragment_expire to remove cache with given name.
	#
	# Example:
	# %h1 foo
	# = cache_fragment(:report, 300) do
	# - data = get_data_slowly

	# decode_session_cookie.rb
	# ------------------------
	# The purpose of this script is to show that if I have the secret_key_base
	# and a cookie to an active Rails session, I can decrypt it and gain access
	# to key information about the user's session.

	require 'rubygems'
	require 'cgi'
	require 'active_support'
	require 'action_controller'

	/*
	* Handling Errors using async/await
	* Has to be used inside an async function
	*/
	try {
	const response = await axios.get('https://your.site/api/v1/bla/ble/bli');
	// Success 🎉
	console.log(response);
	} catch (error) {
	// Error 😨

	check file slave_running with path /opt/slave_running
	if timestamp > 3 minutes then alert