As you know, assignable_values does not invalidate a record even when an attribute value becomes unassignable. See this example...
Travis CI is a free continuous integration testing service. However, it is really fragile and will break more than it...
A little-known feature of modern Regexp engines that help when optimizing a pattern that will be matched against long...
When you tell rbenv to install a Ruby it does not know about, you will get an error message.
RSpec 3.0 deprecates the :should way of writing specs for expecting things to happen. However, if you have tests you...
When you have a string containing umlauts which don't behave as expected (are not matched with a regexp, can...
Sometimes you're getting an ActiveSupport deprecation warning that you cannot or don't want to fix. In these cases...
ActiveRecord caches results of SQL queries. If you want to discard the cached results for one model, you can call...
SimpleForm is a great approach to simplifying your forms, and it comes with lots of well-defined input types. However...
So you want your Ruby script to install missing gems instead of dying? Take this method: def installing_missing_gems...
This is a great tutorials for beginners and intermediate AngularJS developers. It covers a lot of ground, including routing and...
I use this to simulate the (non-existing) :last-letter CSS pseudoclass, e. g. to insert a tombstone at the...
Since version 34, Chromium/Chrome ignores the autocomplete="off" attribute on forms or input fields. Recent versions of other browser do...
If you parse this Yaml ... yes: 'Totally' no: 'Nope' ... you get this Ruby hash: { true: 'Totally', false: 'Nope' }
You are probably using Ruby 1.8.7 with a too recent versions of Rubygems. Downgrade your Rubygems to the latest version...
There are 3 built-in file descriptors: stdin, stdout and stderr (std=standard). (You can define your own, see the...
Edge Rider gives your relations a method #origin_class that returns the class the relation is based on.
React.js is a relatively new Javascript templating engine that has two-way-bindings like AngularJS or Batman. The interesting idea...
Spring is a Rails application preloader. When debugging e.g. the rails gem, you'll be wondering why your raise, puts...
Programatically invoke Rails generators Require the generator, instantiate it and invoke it (because generators are Thor::Groups, you need...
Rubygems can produce lots of deprecation warnings, but sometimes, you cannot fix them. To have a tidy terminal with output...
When you want the table headers to always stay around (e.g. because that table is huuuge), use the code below...
If you want to label things with a color but don't actually care which cholor, you can use the...
So you have a restangular collection and you want to remove an element from it, after you've successfully deleted...