When your JavaScript bundle is so massive that you cannot load it all up front, I would recommend to load...
Webpacker uses Babel and Webpack to transpile modern JavaScript down to EcmaScript 5. Depending on what browser a project needs...
CarrierWave comes with some RSpec matchers which will make testing more comfortable. Let's say you have an Uploader like...
Recent Bundler (1.16.1) started complaining about missing dependencies in the Gemfile. This is due to a stricter handling of specifications...
This might be a known issue with Rubygems 2.5.1. This will help: gem update --system
You might have some trouble running a Rails LTS 2 app with MySQL 5.7. If you don't want to...
The httpclient gem comes with a custom SSL cert store. While an customizable, application-level cert store is great when...
You need to update a lof gems. Make sure you don't have any version constraints in your...
Bundler::GemRequireError: There was an error while trying to load the gem 'mysql2'. Gem Load Error is: Incorrect MySQL client...
mysql> SELECT @@global.version; +------------------+ | @@global.version | +------------------+ | 5.6.30 | +------------------+ 1 row in set (0,00 sec) MySQL 5.6 Reference Manual says "BLOB and TEXT...
Use bundler > 1.15 to fix Gem::LOADED_SPECS_MUTEX (NameError). Given the following project: ruby -v ruby 1.8.7
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.
Katapult 0.3.0 brings Rails 5 and Ruby 2.5 support with a new design, plus a ton of smaller features, fixes...
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...
When writing XLSX files, there are gems like rubyXL or axlsx. While they do offer features like formatting or graphs...
When attempting to update RubyGems, depending on updates your previously performed, you might run into an error ERROR: While executing...
We're usually running Ubuntu LTS versions. Sometimes newer hardware requires packages from more recent Ubuntu releases that only come...
An end-to-end test (E2E test) is a script that remote-controls a web browser with tools like Selenium...
TL;DR: Bundler 2.0 will rename Gemfile to gems.rb and Gemfile.lock to gems.locked (sic). The old filenames will be supported...
RSpec allows defining methods inside describe/context blocks which will only exist inside them. However, classes (or any constants, for that...
There are several gems that make it easy to read and process xlsx files. Parsing the entire file at once...
You can use local copies of gems in your Gemfile like this: gem 'spreewald', path: '~/gems/spreewald' As soon as you...