lancejpollard’s gists

lancejpollard / Rails Nested Forms with belongs_to

Created January 13, 2010 23:09

Rails Nested Forms with belongs_to, doesn't work by default

	# user.rb

	class User < ActiveRecord::Base
	belongs_to :address
	accepts_nested_attributes_for :address # can't have allow_destroy
	end

	# users_controller.rb

	class UsersController < ApplicationController

lancejpollard / Flex Keyboard Handler

Created January 18, 2010 13:50

Simple Example of Using Keyboard Events from Javascript to Actionscript, so you can hijack Browser Keyboard Handlers

	var FlexKeyboardHandler = FlexKeyboardHandler \|\| {}

	FlexKeyboardHandler.setup = function ()
	{
	window.addEventListener("keypress", FlexKeyboardHandler.keydownHandler, true);
	window.addEventListener("keydown", FlexKeyboardHandler.keydownHandler, true);
	getFlexApplication("MyApp").addEventListener("keypress", FlexKeyboardHandler.keydownHandler, true);
	getFlexApplication("MyApp").addEventListener("keypress", FlexKeyboardHandler.keydownHandler, false);
	window.focus();
	};

lancejpollard / Post with Slug DB Call

Created June 12, 2010 10:25

	SQL (0.4ms) SELECT COUNT(*) AS count_id FROM "posts" WHERE ("posts"."parent_id" IS NULL)
	Post Load (0.7ms) SELECT "posts".* FROM "posts" WHERE ("posts"."parent_id" IS NULL) ORDER BY "lft"
	Slug Load (0.4ms) SELECT "slugs".* FROM "slugs" WHERE ("slugs".sluggable_id = 13 AND "slugs".sluggable_type = 'Post') ORDER BY id DESC LIMIT 1
	SQL (0.3ms) SELECT COUNT(*) AS count_id FROM "posts" WHERE ("posts".parent_id = 13)
	Post Load (0.7ms) SELECT "posts".* FROM "posts" WHERE ("posts".parent_id = 13) ORDER BY "lft"
	Post Load (0.4ms) SELECT "posts".* FROM "posts" WHERE ("posts"."id" = 13) LIMIT 1
	CACHE (0.0ms) SELECT "slugs".* FROM "slugs" WHERE ("slugs".sluggable_id = 13 AND "slugs".sluggable_type = 'Post') ORDER BY id DESC LIMIT 1
	Slug Load (0.4ms) SELECT "slugs".* FROM "slugs" WHERE ("slugs".sluggable_id = 39 AND "slugs".sluggable_type = 'Post') ORDER BY id DESC LIMIT 1
	SQL (0.4ms) SELECT COUNT(*) AS count_id FROM "posts" WHERE ("posts".parent_id = 39)
	CACHE (0.0ms) SELECT "posts".* FROM "po

lancejpollard / awesome_nested_set_optimization_helper.rb

Created July 2, 2010 01:39

Goal: Convert entire hierarchy of models into tree in 1 database call, such that you can loop through them depth-first

	def simple_nested_set(clazz) # Post for example
	stack = [] # Post for example
	result = []
	clazz.all(:order => "lft").each do \|node\|
	if stack.empty?
	stack.push({:node => node, :children => []})
	result << stack.last
	next
	end
	if stack.last[:node].lft < node.lft && node.lft < stack.last[:node].rgt

lancejpollard / jquery.parse-child-html-document-from-remote-string.js

Created July 10, 2010 05:28

	<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
	<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
	<head>
	<title>Parent Page wanting to Parse Children</title>
	<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
	<meta name="keywords" content="parent, html, parsing">
	</head>
	<body>
	<script type="text/javascript">
	$(document).ready(function() {

lancejpollard / basic-html5-layout.html

Created July 12, 2010 19:29

	<body>
	<section class="top" role="definition">
	<div class="header">
	<div class="frame">
	<header></header>
	<nav></nav>
	</div>
	</div>
	</section>
	<section class="main" role="main">

lancejpollard / scss-structure.markdown

Created July 20, 2010 22:36

stylesheets/
  application.scss
  base/
    _base.scss
    _grid.scss
    _reset.scss
    _typography.scss
  components/
    editor/

_design.scss

lancejpollard / html5-dom.html

Created August 4, 2010 22:29

	<div class='document' role='document'>
	<section class='header container' role='definition'>
	<div class='navigation'>
	<div class='frame'>
	<header class='logo'>
	<h1></h1>
	</header>
	<nav class='menu' role='directory'>
	<ul>
	<li>

lancejpollard / Recursively Symbolize Keys in Ruby.rb

Created August 10, 2010 16:56

	class Hash
	def recursively_symbolize_keys!
	self.symbolize_keys!
	self.values.each do \|v\|
	if v.is_a? Hash
	v.recursively_symbolize_keys!
	elsif v.is_a? Array
	v.recursively_symbolize_keys!
	end
	end

lancejpollard / How to Install Node.js on a Mac.sh

Created August 10, 2010 20:39

	git clone git://github.com/ry/node.git
	cd node
	./configure
	make
	sudo make install

Lance Pollard lancejpollard