When you use will_paginage to paginate a scope, and you want to obtain the total number of records matched...
If your pidgin IM fails to connect to ICQ, you may need to update it. The ubuntu default sources are...
This document describes an agreement between web servers and search engine crawlers that allows for dynamically created content to be...
This will stash all modifications that you did not git add: git stash -k Note that newly created (and non...
For clarity and traceability, your commit messages should include the ID and title of the Pivotal Tracker story you're...
You most likely never want to do this. But if you do: Model.update_all({:id => new_id}, {:id => old_id...
To only run the next two migrations: rake db:migrate STEP=2 To revert the previous two migrations:
The following initializer provides an :alias => "my_route_name" option to restful routes in your route.rb. This simply makes the...
If you need to revert only parts of one or several commits the following workflow can help:
To install webmock 1.5.0: sudo gem install webmock --version "=1.5.0" or sudo gem install webmock -v "=1.5.0"
As a user of Bundler you have spent significant time looking at this message: Fetching source index for http://rubygems.org...
Regular spaces and non-breaking spaces are hard to distinguish for a human. Instead of using the HTML entity...
Given this class: class Foo class Bar end end If you want to clean up this code with the modularity...
This is a bash script for those of you who need to install all gems for all projects (e.g. to...
Use this scope: class Stick named_scope :shuffled, lambda { last_record = last { :conditions => [ 'id >= ?', rand(last_record.id) ] } if last_record }
Ctrl + R Search commands you entered previously. Press Ctrl + R again to search further back, Ctrl + Shift + R searches forward...
Thanks to habits engrained by Rails 2’s link_to_remote and remote_form_for, we expect that Rails 3...
This note describes how to setup a box running Ubuntu to share its Internet connection with another PC.
CONCAT('foo', 'bar', NULL) = NULL the NULL always wins in MySQL. If you would rather treat NULL as...
Sometimes you inherit a non Rails or non Rack based web app such as PHP, Perl, Java / JEE, etc. I...
Use this MySQL command to show further info about a table: SHOW CREATE TABLE tags; This will output a table...
If a controller action responds to other formats than HTML (XML, PDF, Excel, JSON, ...), you can reach that code in...
You can now add an :inverse_of option to has_one, has_many and belongs_to associations.... Without :inverse_of...
When doing a presentation you may want to hide your desktop icons. You can switch them off (or back on...