Hrishi Mittal hrishimittal

Frontend Development

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How Dev Bootcamp Teaches: ActiveRecord

I'm Jesse, one of the co-founders of Dev Bootcamp, and the acting curricular editor-in-chief. We get lots of questions about how Dev Bootcamp approaches teaching, what our curriculum is like, and how it differs from other schools and competitors. I thought I'd share some of that with you, starting with a brief overview of our theory of learning and then sharing our introduction to ActiveRecord.

This will be light on theory and heavy on ActiveRecord, so if you're not familiar with SQL or Ruby it might be hard to follow. Mea culpa.

Dev Bootcamp's Theory of Learning

At Dev Bootcamp, we believe that "modeling" is central to learning. The most effective students have a clear model of how the world works and are able to quickly integrate new information int

Couldn't find the text of this for a while...

Original (404'ed) -- https://plus.google.com/115094562986465477143/posts/Di6RwCNKCrf
Fakeout -- http://www.dzone.com/links/rss/ryan_dahl_i_hate_almost_all_software.html
Repost -- https://plus.google.com/116904230181415286707/posts/DnAMAN5sUR8

In August 2007 a hacker found a way to expose the PHP source code on facebook.com. He retrieved two files and then emailed them to me, and I wrote about the issue:

http://techcrunch.com/2007/08/11/facebook-source-code-leaked/

It became a big deal:

http://www.techmeme.com/070812/p1#a070812p1

The two files are index.php (the homepage) and search.php (the search page)

Open all files with git merge conflicts in MacVim

git diff --name-only | uniq | xargs mvim

When git encounters a merge conflict, e.g. during a rebase, it drops you back into the shell with a dirty working directory. I like this one-liner for opening all files with a merge conflict in MacVim.

Once you're in Vim, you can then switch between the files with :n and :prev, or another favourite: :w | n (save current file and open the next command line-supplied file).

UPDATE: see below for a version that works with real terminal commands.

	require 'nokogiri'
	require 'open-uri'

	# Get a Nokogiri::HTML:Document for the page we're interested in...

	doc = Nokogiri::HTML(open('http://www.google.com/search?q=tenderlove'))

	# Do funky things with it using Nokogiri::XML::Node methods...

	####

	# Simple Recommendation Engine in Ruby
	# Visit: http://otobrglez.opalab.com
	# Author: Oto Brglez <[email protected]>

	class Book < Struct.new(:title)

	def words
	@words \|\|= self.title.gsub(/[a-zA-Z]{3,}/).map(&:downcase).uniq.sort
	end

	def resolve_postcode_position(code)
	cache_key = "postcode:geo:#{code.gsub(' ','')}"

	coords = Rails.cache.fetch(cache_key) do
	postcode_uri = URI.encode "https://maps.googleapis.com/maps/api/geocode/json?address=#{code},UK&sensor=false&key=#{CONFIG[:google][:api_key]}"
	response = HTTParty.get(postcode_uri)
	begin
	response['results'].first['geometry']['location']
	rescue
	false

	// ActiveTable - a bookmarklet to make tables sortable and editable

	function init() {
	var aHrows = getHrows();
	var numHrows = aHrows.length;

	var aHidden = getHiddenColumns();
	ATpopup = document.createElement("div");
	ATpopup.style.cssText = "position: absolute; visibility: hidden; padding: 0; font-family: Arial; background-color: rgba(255, 255, 255, 0.9); border-radius: .5em; text-align: center; box-shadow: .05em .05em .5em #00C;";
	ATpopup.innerHTML = "<a href='sort' title='sort' onclick='sortColumn(); return false'><img border=0 src='http://stevesouders.com/images/sort_up_down.png' style='padding-top: 0.2em;'></a><br><a href='hide' style='color: #C00; font-family: monospace; font-size: 1.5em; text-decoration: none;' title='hide' onclick='hideColumn(); return false'>x</a>"; // TODO - use protocol-less URL for img

	namespace :grape do
	desc 'Print compiled grape routes'
	task :routes => :environment do
	API.routes.each do \|route\|
	puts route
	end
	end
	end