Form fields can be rendered as noneditable by setting the disabled or the readonly attribute. Be aware of the differences...
Your default postgres user is named like your linux user. That default user has limited access privileges, which can cause...
Trying to open a vnc window with geordi geordi vnc ended up with this error: > VNC viewer could not be...
Use bundler > 1.15 to fix Gem::LOADED_SPECS_MUTEX (NameError). Given the following project: ruby -v ruby 1.8.7
When your Rails controller calls render, you can pass a :status option for the HTTP status code: render 'results', status...
Here is how to use Chromedriver without libraries like selenium-webdriver. This can be useful for debugging. The following example...
If you want to make a screenshot of a website that works well in print or on a high-DPI...
I recently had fun with replacing a custom video plattform ("mycustomtv") in one of our applications. I learned a lot...
Note netstat has mostly been superseeded by its more modern rewrite ss which nowadays comes pre-installed rather than netstat...
Understanding your type of cronjob Some cronjobs must only run on a single server. E.g. when you run nightly batch...
When installing gems, a lot of time is spent building locally installed documentation that you probably never use.
When you have a pending Cucumber step (or feature) that also uses an existing VCR cassette, your pending test may...
Katapult 0.3.0 brings Rails 5 and Ruby 2.5 support with a new design, plus a ton of smaller features, fixes...
Say you want to move a git repository from one remote (perhaps Github) to another (perhaps Gitlab).
This cucumber step is useful for testing an image (looking at the src of the image). Then(/^I should see...
ActiveSupport::Dependencies takes care of auto-loading any classes in development. This is usually useful, but when you run into...
Font Awesome version 5 changed some icon names, and introduces new prefixes fab, far, and fas. There is a JavaScript...
TL;DR Use user.update!(remove_avatar: true) to delete attachments outside of forms. This will have the same behavior as...
This article will show you how to use throw and catch. It's a nice tool to break out of...
This is a small example on how you can check if your Postgres index can be used by a specific...
The issue: You are using stub_const to change a constant value for your test. stub_const "SomeClass::CONST", 'test...
This error is raised because your old database does not have a configured environment yet, which Rails 5 enforces.
Rails applications and ruby gems should have a README that gives the reader a quick overview of the project. Its...
To find and replace (CTRL + H) empty cells in Libre Office Calc you can use a regular expressions (also called...