Starting from 4.1, Rails automatically detects the inverse of an association, based on heuristics. Unfortunately, it does not seem to...
HTTP/2 will make our applications faster, simpler, and more robust—a rare combination—by allowing us to undo many of...
ActiveModel supplies an errors object that behaves similar to a Hash. It can be used to add errors to a...
Note: Making a reverse proxy with nginx is much more straightforward. A reverse proxy is a "man in the middle...
When you register a delegated event using on (or the deprecated delegate / live), it is somewhat hard to manually trigger...
Capistrano 3 is a major rework of the framework and requires several adjustments to your deploy configuration files. The biggest...
Please don't use the horrible datetime_select helper. It has a terrible UI. Always prefer to use a visual...
When using Savon to connect a SOAP API, you may want to use Savon::SpecHelper to mock requests in your...
When you have an element you want to hide, you can add a ng-show='isOpen' attribute to that element...
If you're a frequent user of LibreOffice, I strongly recommend to checkout out the VLOOKUP function (SVERWEIS in German...
Small (1.5 KB) Javascript library that lets you render tables, lists, etc. with hundreds of thousands of items.
Jasmine has a jasmine.clock() helper that you can use to travel through time and trigger setTimeout and setInterval callbacks:
When you want to UPDATE a table with information from an associated table, you can JOIN the associated table into...
Several Rails migration methods accept index: true as an option to create an index. In some cases (like #add_column...
jquery-placeholder is a simple jQuery plugin that enables form placeholders in browsers that do not support them natively, i.e...
You can freeze any Ruby object to prevent further modification. If you freeze an ActiveRecord and try to set an...
Rails comes with a Rake task notes that shows code comments that start with "TODO", "FIXME", or "OPTIMIZE".
In RSpec you can tag examples or example groups with any tags you like simply by saying describe ReportCreator, slow...
Code folding is a very useful feature to me. It gives me a quick overview over a file and keeps...
To use a form model with devise, you can simply override #resource_class in a controller. A typical use case...
Fontawesome 4 ships with many useful CSS helper classes. Enlarge Icon Add fa-lg (133%), fa-2x, fa-3x, fa...
Fontawesome 4 has introduced new naming conventions that make it easy to retrieve variants of a given icon.
Starting from Rails 4.0, you can use a special form options helper called #collection_check_boxes. It behaves similar to...
When using threads, you must make your code thread-safe. This can be done by either locking (mutexes) all data...