Nate Welling naterexw

Rails Migration

Command Line

pry -r ./config/app_init_file.rb - load your app into a pry session (look at the file loaded by config.ru)
pry -r ./config/environment.rb - load your rails into a pry session

Debugger

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

-E: will describe the underlaying queries of the \ commands (cool for learning!)
-l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

Define a function that takes an array with numbers and prints all the elements of the array, separated by "--"

printSpecial([12, 33, 144, 122])
# 12 -- 33 -- 144 -- 122

Define a function that takes an array with numbers and returns another array where each element contains double each element in the array

Gmaps4rails is developed to simply create a Google Map with overlays (markers, infowindows…).

Create an empty repository in GitHub, named googlemaps, select the READM, license, and rails .gitignroe file
Clone the repository to local workspace folder
cd googlemaps
rails _4.1.6_ new . -BGT
git add -A

	<% flash.each do \|type, message\| %>
	<div class="alert <%= bootstrap_class_for(type) %> fade in">
	<button class="close" data-dismiss="alert">×</button>
	<%= message %>
	</div>
	<% end %>

	# -- encoding : utf-8 --
	# config/deploy.rb

	require 'capistrano/ext/multistage'
	require "rvm/capistrano"
	require 'bundler/capistrano' #Using bundler with Capistrano
	require 'cape'

	set :stages, %w(staging production)
	set :default_stage, "production"

	group :development do
	# Spring speeds up development by keeping your application running in the background.
	#> https://github.com/rails/spring
	gem 'spring'

	# Better Errors replaces the standard Rails error page with a much better and more useful error page.
	#> https://github.com/charliesome/better_errors
	gem 'better_errors'
	gem 'binding_of_caller' # adding REPL