lushone

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.

	cd /Library/Ruby/Gems/1.8/gems/pg-0.13.2/lib/
	otool -L pg_ext.bundle

	> libpq.5.dylib (compatibility version 5.0.0, current version 5.4.0)
	# Notice that libpq.5.dylib doesn't use an absolute path like the other libs in pg_ext.bundle. The system can't find it. You need to change where it looks for libpq.5.dylib.

	install_name_tool -change libpq.5.dylib /Library/PostgreSQL/9.2/lib/libpq.5.dylib pg_ext.bundle
	# Note: Use the absolute path that applies to your system. I used what it was for my system.

	# Now run:

	/**
	* get an image's dimensions using pure js
	*/
	var img = new Image();
	img.onload = function() {
	document.write('<strong>image:</strong> ' + this.src + '<br><strong>width:</strong> '+ this.width + '<br><strong>Height:</strong> ' + this.height);
	}
	img.src = 'http://domain.com/image.jpg';

	#!/bin/bash
	OPENSSL_VERSION="1.0.0e"

	curl -O http://www.openssl.org/source/openssl-$OPENSSL_VERSION.tar.gz
	tar -xvzf openssl-$OPENSSL_VERSION.tar.gz
	mv openssl-$OPENSSL_VERSION openssl_i386
	tar -xvzf openssl-$OPENSSL_VERSION.tar.gz
	mv openssl-$OPENSSL_VERSION openssl_x86_64
	cd openssl_i386
	./Configure darwin-i386-cc -shared

	# ignore the "bit" stuff.. only relevant to my custom jekyll fork

	desc 'create new post or bit. args: type (post, bit), title, future (# of days)'
	# rake new type=(bit\|post) future=0 title="New post title goes here" slug="slug-override-title"
	task :new do
	require 'rubygems'
	require 'chronic'

	type = ENV["type"] \|\| "bit"
	title = ENV["title"] \|\| "New Title"

	# shortform git commands
	alias g='git'

	# generate file list modified since last commit and export to tar file
	git diff-tree -z -r --no-commit-id --name-only --diff-filter=ACMRT COMMID_HASH \| xargs -0 tar -rf list.tar

	# export unpushed files list
	git log -z origin/master..master --name-only --pretty="format:" \| sort -zu \| xargs -0 tar -rf list.tar

	# Count the lines of each file extenion in a list of files

	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="pragma" content="no-cache">