developer.mozilla.org

Having your site run on SSL is worthless when you include content over an unsafe connection (HTTP).

Under certain (unknown) circumstances, Rails will give localized files an invalid content-type in the Response header. For me, after...

Generally, Selenium tests use the browser to interact with the page. If it's unavailable, a timeout error is...

If you're using the Capybara webdriver, steps sometimes fail because the browser hasn't finished loading the next page...

Browser rendering engines are very slow at rendering large box shadows. I had a situation where a complex layout with...

stackoverflow.com

While git branch will show you all branches and highlight the current one with an asterisk, it can be too...

In theory you can take any scope and extend it with additional joins or conditions. We call this chaining scopes...

ActiveModel::Errors is used to handle validation errors on Rails objects. If you inspect an instance, it feels like a...

Around will not happen until after a feature's Background has been processed. Use Before and After to avoid that...

vimeo.com

Hashrocket Lunch n' Learn #1 with Avdi Grimm: Making Little Classes out of Big Ones A look at the pros...

If you require your Rails models manually, pay attention to the path you use. Unless you have...

makandra dev
github.com

Show failing specs instantly. Show passing spec as green dots as usual. Configuration: # spec/spec.opts (.rspec for rspec 2) --require rspec/instafail...

Why is this useful? You can have a background image on the same element, overlaying it with a transparent gradient...

When is this useful? When both parent and child elements have borders, with this technique you don't get two...

If your application has forms to edit string fields, you probably want to strip the entered values (remove whitespace from...

blog.codeclimate.com

“Fat models” cause maintenance issues in large apps. Only incrementally better than cluttering controllers with domain logic, they usually represent...

In a Rails application, *_spec.rb files get special treatment depending on the file's directory. E.g. when you put a...

makandra dev
github.com

Richard Powell presents a collection of CSS styling advice that's mainly taken from SMACSS. Although at makandra we're...

This is for you if you get the following strange error from the state_machine gem: undefined method `-' for #

makandra dev
github.com

Turbolinks makes following links in your web application faster. Instead of letting the browser recompile the JavaScript and CSS between...

makandra dev
speakerdeck.com

The linked slidedeck holds many tips, of which I list the most interesting to me below DATA and END

blog.teamtreehouse.com

Randy Hoyt is presenting a way to display something (e.g. products) in a grid. It's responsive, too!

Geordi now supports our solution for running Selenium tests without having Firefox or Chrome windows popping up all over your...

Ruby's mathn library changes Fixnum division to work with exact Rationals, so 2 / 3 => 0 2 / 3 * 3 => 0...