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@bowsersenior
bowsersenior / cancan_mongoid.rb
Created September 2, 2010 00:42 — forked from blackgold9/mongoid_addtions.rb
How to get CanCan to work with Mongoid 2
module CanCan
class Query
def sanitize_sql(conditions)
conditions
end
end
# customize to handle Mongoid queries in ability definitions conditions
class CanDefinition
def matches_conditions_hash?(subject, conditions = @conditions)
@jbr
jbr / switch.rb
Created February 12, 2011 11:15
ruby 1.9.2 case-like switch
# In response to:
# http://mlomnicki.com/ruby/tricks-and-quirks/2011/02/10/ruby-tricks2.html
# Ruby 1.9.2 has some neat stuff that lets us make a readable
# alternative case statement that calls each method in turn.
# 1.9.2 features used:
# * hashes are ordered in 1.9.2
# * cool JSON-style hash syntax
# * concise lambda syntax
@ryanb
ryanb / rails_3_1_rc4_changes.md
Created May 6, 2011 01:10
The Changelogs for Rails 3.1 Beta 1

Railties 3.1 RC4

  • The new rake task assets:clean removes precompiled assets. [fxn]

  • Application and plugin generation run bundle install unless --skip-gemfile or --skip-bundle. [fxn]

  • Fixed database tasks for jdbc* adapters #jruby [Rashmi Yadav]

  • Template generation for jdbcpostgresql #jruby [Vishnu Atrai]

@ugisozols
ugisozols / application.rb
Created September 6, 2011 14:25
assets lazily compiled in production
if defined?(Bundler)
# If you precompile assets before deploying to production, use this line
# Bundler.require *Rails.groups(:assets => %w(development test))
# If you want your assets lazily compiled in production, use this line
Bundler.require(:default, :assets, Rails.env)
end
@simme
simme / Install_tmux
Created October 19, 2011 07:55
Install and configure tmux on Mac OS X
# First install tmux
brew install tmux
# For mouse support (for switching panes and windows)
# Only needed if you are using Terminal.app (iTerm has mouse support)
Install http://www.culater.net/software/SIMBL/SIMBL.php
Then install https://bitheap.org/mouseterm/
# More on mouse support http://floriancrouzat.net/2010/07/run-tmux-with-mouse-support-in-mac-os-x-terminal-app/
@saetia
saetia / gist:1623487
Last active January 24, 2026 21:18
Clean Install – OS X 10.11 El Capitan

OS X Preferences


most of these require logout/restart to take effect

# Enable character repeat on keydown
defaults write -g ApplePressAndHoldEnabled -bool false

# Set a shorter Delay until key repeat
@steveclarke
steveclarke / capybara.md
Created April 10, 2012 17:32
RSpec Matchers

Capybara

save_and_open_page

Matchers

have_button(locator)
@javan
javan / screenshot.js
Created June 19, 2012 21:40
Create a screenshot of any URL using phantomjs (headless webkit)
//
// Example usage: phantomjs screenshot.js http://yahoo.com /tmp/yahoo.png
//
var system = require('system');
var url = system.args[1];
var filename = system.args[2];
var page = new WebPage();
page.open(url, function (status) {
@coryalder
coryalder / textmatesparkle.sh
Created August 14, 2012 04:51
Automatically update to the current version of TextMate
#!/bin/bash
cd ~/textmate
git pull origin
git submodule update
ninja TextMate
: ${NEWTEXTMATEPATH:="$HOME/build/TextMate/Applications/TextMate/TextMate.app"}
if [ -d $NEWTEXTMATEPATH ]; then
rm -rf /Applications/TextMate.app
mv $NEWTEXTMATEPATH /Applications/
fi
@cpjolicoeur
cpjolicoeur / gist:3590737
Created September 1, 2012 23:15
Ordering a query result set by an arbitrary list in PostgreSQL

I'm hunting for the best solution on how to handle keeping large sets of DB records "sorted" in a performant manner.

Problem Description

Most of us have work on projects at some point where we have needed to have ordered lists of objects. Whether it be a to-do list sorted by priority, or a list of documents that a user can sort in whatever order they want.

A traditional approach for this on a Rails project is to use something like the acts_as_list gem, or something similar. These systems typically add some sort of "postion" or "sort order" column to each record, which is then used when querying out the records in a traditional order by position SQL query.

This approach seems to work fine for smaller datasets, but can be hard to manage on large data sets with hundreds (or thousands) of records needing to be sorted. Changing the sort position of even a single object will require updating every single record in the database that is in the same sort group. This requires potentially thousands of wri