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@brookr
brookr / gist:2493622
Created April 25, 2012 21:34 — forked from derekharmel/gist:2399684
How to fix pow not using the correct gemset
# From the project root
rvm env -- `rvm current` >> .powenv
@spalladino
spalladino / can_destroy.rb
Created January 31, 2012 14:42
How to check if object can be destroyed if it has dependent restrict associations
class ActiveRecord::Base
def can_destroy?
self.class.reflect_on_all_associations.all? do |assoc|
assoc.options[:dependent] != :restrict || (assoc.macro == :has_one && self.send(assoc.name).nil?) || (assoc.macro == :has_many && self.send(assoc.name).empty?)
end
end
end
@bradmontgomery
bradmontgomery / rvm_apache_passenger.txt
Created January 10, 2012 04:45
RVM + Apache + passenger setup for Ubuntu
# Install rvm system-wide
bash -s stable < <(curl -s https://raw.github.com/wayneeseguin/rvm/master/binscripts/rvm-installer )
# Update the packages
apt-get update
apt-get upgrade
apt-get install build-essential
# get the packages required by ruby
rvm pkg install zlib
@rstacruz
rstacruz / index.md
Last active August 2, 2025 18:42
Rails models cheatsheet

Rails Models

Generating models

$ rails g model User

Associations

belongs_to

has_one

@ocean90
ocean90 / box-shadow.html
Last active October 16, 2025 12:49
CSS3 Box Shadow, only top/right/bottom/left and all
<!DOCTYPE html>
<html>
<head>
<title>Box Shadow</title>
<style>
.box {
height: 150px;
width: 300px;
margin: 20px;
@lucasfais
lucasfais / gist:1207002
Created September 9, 2011 18:46
Sublime Text 2 - Useful Shortcuts

Sublime Text 2 – Useful Shortcuts (Mac OS X)

General

⌘T go to file
⌘⌃P go to project
⌘R go to methods
⌃G go to line
⌘KB toggle side bar
⌘⇧P command prompt
@juniorz
juniorz / install_postgis_osx.sh
Created July 14, 2011 03:49
Installing PostGIS on Mac OS X and Ubuntu
# Some good references are:
# http://russbrooks.com/2010/11/25/install-postgresql-9-on-os-x
# http://www.paolocorti.net/2008/01/30/installing-postgis-on-ubuntu/
# http://postgis.refractions.net/documentation/manual-1.5/ch02.html#id2630392
#1. Install PostgreSQL postgis and postgres
brew install postgis
initdb /usr/local/var/postgres
pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start
@rkh
rkh / gist:999120
Created May 30, 2011 16:32
Sinatra Stylesheet Expires
# avoid path traversal attacks and speed up look-up
set :css_files, {}
Dir.glob("#{settings.public}/css/*.css") { |file| settings.css_files[File.basename(file, '.css')] = file }
get "/css/:name.css" do |name|
expires 60*60*24*356*3
send_file setting.css_files[name]
end