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#Mac OS X

Apps

Friendly URLs

By default, Rails applications build URLs based on the primary key -- the id column from the database. Imagine we have a Person model and associated controller. We have a person record for Bob Martin that has id number 6. The URL for his show page would be:

/people/6

But, for aesthetic or SEO purposes, we want Bob's name in the URL. The last segment, the 6 here, is called the "slug". Let's look at a few ways to implement better slugs.

A Capistrano Rails Guide

by Jonathan Rochkind, http://bibwild.wordpress.com

why cap?

Capistrano automates pushing out a new version of your application to a deployment location.

I've been writing and deploying Rails apps for a while, but I avoided using Capistrano until recently. I've got a pretty simple one-host deployment, and even though everyone said Capistrano was great, every time I tried to get started I just got snowed under not being able to figure out exactly what I wanted to do, and figured I wasn't having that much trouble doing it "manually".

Nestable, sortable and dragable categories:

In the project I'm working on we wanted to have a Category model which we wanted to be nestable. But we also liked the user to have a draggable interface to manage and rearrange the order of his categories. So we chose awesome_nested_set for the model and jQuery.nestedSortable for the UI.

It took me some time to arrange things to work properly so I wanted to share my work in case it helps anybody.

Before beginning

you might want to take a look at a demo app

go to: http://awesomenestedsortable.heroku.com/groups/1
click in manage categories

	{
	// http://eslint.org/docs/rules/

	"ecmaFeatures": {
	"binaryLiterals": false, // enable binary literals
	"blockBindings": false, // enable let and const (aka block bindings)
	"defaultParams": false, // enable default function parameters
	"forOf": false, // enable for-of loops
	"generators": false, // enable generators
	"objectLiteralComputedProperties": false, // enable computed object literal property names

	<?xml version="1.0" encoding="UTF-8"?>
	<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
	<plist version="1.0">
	<dict>
	<key>Ansi 0 Color</key>
	<dict>
	<key>Blue Component</key>
	<real>0.13528014719486237</real>
	<key>Green Component</key>
	<real>0.12312769144773483</real>

	# Simple, scrappy UDP DNS server in Ruby (with protocol annotations)
	# By Peter Cooper
	#
	# MIT license
	#
	# * Not advised to use in your production environment! ;-)
	# * Requires Ruby 1.9
	# * Supports A and CNAME records
	# * See http://www.ietf.org/rfc/rfc1035.txt for protocol guidance
	# * All records get the same TTL

	# How to find out where a method comes from.
	# Learned this from Dave Thomas while teaching Advanced Ruby Studio
	# Makes the case for separating method definitions into
	# modules, especially when enhancing built-in classes.
	module Perpetrator
	def crime
	end
	end

	class Fixnum

	cd /tmp

	# Faster require:
	# https://gist.github.com/1008945
	curl -O https://raw.github.com/gist/1008945/4edd1e1dcc1f0db52d4816843a9d1e6b60661122/ruby-1.9.2p290.patch

	# GC-tuning:
	# https://gist.github.com/856296
	curl -O https://raw.github.com/gist/856296/a19ac26fe7412ef398bd9f57e61f06fef1f186fe/patch-1.9.2-gc.patch

	#!/bin/sh
	set -u
	set -e
	# Example init script, this can be used with nginx, too,
	# since nginx and unicorn accept the same signals

	# Feel free to change any of the following variables for your app:
	APP_ROOT=/home/deploy/public_html/rm/current
	PID=$APP_ROOT/tmp/pids/unicorn.pid
	ENV=production