Brooks Swinnerton bswinnerton

Creeper

We want to make an application that has the ability to take an uploaded image and plot where it was taken on a map. To do so, we're going to need to use a few gems:

pry-rails: the worlds most badass gem there ever was. Pry is a general debugging tool that allows you to set breakpoints (with something like binding.pry), lookup method definitions (with prefacing the method with $), and lots of great syntax highlighting.
better_errors and binding_of_caller: is an amazing way to transform the standard rails error messages with something that has a REPL that allows you to see what the code is like at the moment of failure.
paperclip: a very popular tool to allow people to upload files to your applications and store them with a model
geocoder: a location management gem that allows us to do lookups of locations by latitude and longitude.
mini_exiftool: as the NSA knows, all images have something called metadata associated with them. Modern cell phones (which a large populat

Back End Web Development

Rails

Generating a new application

rails new catmosphere
cd catmosphere/

Starting the rails server

Back End Web Development

Ruby

Data types

String - denoted by single or double quotes
e.g. "Brooks", 'brooks'
Integer (aka Fixnum) - A whole number
e.g. 1, 42

Ruby on Rails Office Hours - Session 3

Building a gem

Video: https://www.youtube.com/watch?v=bMD5IB8vKmA
Real time chat: http://tlk.io/ror-study-group

Code Along

Create the gem skeleton

	require 'pry'

	$v2 = true

	module V2
	def self.included(base)
	base.extend(ClassMethods)
	end

	module ClassMethods

	require 'pry'

	require 'nokogiri'
	require 'rest-client'

	endpoint_url = 'http://reddit.com'
	response = RestClient.get(endpoint_url)
	parsed_response = Nokogiri.parse(response)

	titles = parsed_response.css('.content > .spacer > #siteTable > .thing > .entry > .title > a').map do \|node\|

	require_relative 'lib/user'
	require_relative 'lib/post'
	#require 'pry'

	brooks = User.new('Brooks', 'brooks@ga.co')
	Post.new('Cat takes over the world', 'asdfasdfas', brooks)
	Post.new('colbert', 'asdf', brooks)
	Post.new('asdf', 'qwer', brooks)

	Post.all.each do \|post\|

	class Post
	attr_accessor :title, :body
	@@all = []

	def initialize(title, body)
	@title = title
	@body = body
	@@all << self
	end

	require 'json'
	require 'rest-client'

	url = 'http://reddit.com/.json'

	response = RestClient.get(url)
	parsed_response = JSON.parse(response)

	posts = parsed_response['data']['children'].map do \|post\|
	{