Multiple check boxes can bind to an array-backed virtual attribute, making tag selection and validation-safe form round trips work with one value per option.

Navigate to the previous page in Cucumber feature tests when browser history is unavailable, using the HTTP referrer in Capybara or Webrat.

Selenium has been the siren song that continually calls out to us. Unfortunately, in practice we’ve been unable to get Selenium to run reliably for real applications, on both developers machines and on the continuous integration server. This failure with Selenium has caused us to search for alternative solutions

Change the message of the latest unpushed Git commit with git commit --amend, or rewrite older unpushed commit messages with interactive rebase.

Rails gems that must support several framework releases need separate test apps per version. Shared code and specs reduce duplication while keeping version-specific coverage.

Checks whether a form dropdown has a preselected value in HTML using Cucumber step definitions for Capybara or Webrat.

Sass mixins for cross-browser styling reduce code and enable CSS3PIE support in Internet Explorer 8 and earlier.

You should never transmit sensitive data without encryption. Being logged in somewhere constitutes transmitting sensitive data.

For Pivotal Tracker:

• Make sure you set "Always Use HTTPS" under "My Profile".
• As you can not rely on every member of a project to have this enabled, you should also tick "Use HTTPS" on the settings page of each project.

Synthetic DOM events are awkward across browsers, especially for clicks and custom events. jQuery, Prototype, and Element.fire() offer simpler ways to simulate them.

Added utility methods for the Prototype Javascript framework.

Odd line-height values render inconsistently across major browsers; using even values and a Sass mixin helps keep block element sizing stable.

will_paginate pagination can hide the full result size; total_entries returns the pre-pagination record count, but may require a slow second query.

If your pidgin IM fails to connect to ICQ, you may need to update it. The ubuntu default sources are usually outdated.

Just follow the instructions 1-4 and 1-3 on the page linked below.

Making SSL connection work

If you can not connect using SSL, open up the account settings and enable "clientLogin". Also, your Server should be set to slogin.icq.com.

This document describes an agreement between web servers and search engine crawlers that allows for dynamically created content to be visible to crawlers. Google currently supports this agreement. The hope is that other search engines will also adopt this proposal.

There is a problem with AJAX response handling for Rails 3 remote links and forms in Internet Explorer. This problem affects applications still using jQuery 1.4.2.

Stash only unstaged changes in Git with git stash -k; use -u to include new files, and keep the working tree clean before git stash pop.

Fixes all Flash elements on a page so that they heed DOM stacking order

Changing an ActiveRecord record’s primary key is usually unsafe, but a direct update_all can replace one id with another when it is unavoidable.

Selective Rails migrations can be moved up, down, redone, or targeted by version instead of processing the full sequence.

The following initializer provides an :alias => "my_route_name" option to restful routes in your route.rb. This simply makes the same route also available under a different ..._path / ..._url helpers.

For example,

map.resources :notes, :alias => :snippets

Gives you

notes_path, notes_url, new_note_path... #as always
snippets_path, snippets_url, new_snippet_path... #from the alias

Put this into an initializer:

Reverting only selected changes from one or more commits can be done interactively by staging parts of the diff and discarding the rest.

Compare one file against another commit or branch to inspect changes without reviewing the entire repository.

Pinning a gem version avoids accidental upgrades and keeps installs reproducible. gem install supports exact version selection with --version or -v.