makandra is responsible for maintaining about 75 Ruby projects. These projects use a large number of different versions for Ruby...
Ruby is the programming language we use on the backend. Goals After finishing this lesson you should be able to...
When using ORDER BY "column" in PostgreSQL, NULL values will come last. When using ORDER BY "column" DESC, NULLs will...
Disabling auto-complete in login forms is probably a bad idea, since it encourages weak passwords. If you are still...
If you need to follow links, click buttons, etc. using Capybara inside an , you can do it like this:
In my RubyMine I have recorded two macros for debugging and linked them to some keyboard shortcuts. Since I believe...
Insanely detailled guide about controlling copy & paste behavior using web technology in 2015. Note that you can now trigger a...
Small web application where you can upload an image (PNG, JPEG, GIF) and generate a base64-encoded version of it...
Rails comes with grouped_collection_select that appears to be useful, but isn't. As an alternative, consider the flat...
If you're supporting IE9+, you can listen to input to see if a text field changes. Other than change...
The differences are subtle. You probably want to use Time, except when you want to use DateTime. See the attached...
Note: ActiveRecord::Base#becomes has a lot of quirks and inconsistent behavior. You probably want to use ActiveType.cast instead.
To disable the mostly useless automatic suggestion popups in RubyMine, go to File / Settings, then to Editor / General / Code Completion...
Starting from 4.1, Rails automatically detects the inverse of an association, based on heuristics. Unfortunately, it does not seem to...
There is no such thing as a "default order" of rows in database tables. For instance, when you paginate a...
HTTP/2 will make our applications faster, simpler, and more robust—a rare combination—by allowing us to undo many of...
Surprisingly exhaustive new icon set by Google. Available as PNG, SVG and as a icon font. Comment from Henning
Since version 2.6 exception notifier distinguishes between foreground and background sections. The reason is that with background jobs (e.g. methods...
ActiveModel supplies an errors object that behaves similar to a Hash. It can be used to add errors to a...
Developing complex regular expressions quickly blows my mind. Here are some online regex editors that help you by highlighting matching...
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...
All major browsers (IE8+, FF3.5+, Safari 4+, any Chrome) support sessionStorage, a JavaScript storage object that survives page reloads and...
Capistrano 3 is a major rework of the framework and requires several adjustments to your deploy configuration files. The biggest...