The ActionDispatch module of Rails gives you the helper method flash to access the flash messages in a response.
To ensure Spring is not running: bin/spring stop pkill -f spring To prevent Spring from starting again: export DISABLE_SPRING...
By default parallel_tests will spawn as many test processes as you have CPUs. If you have issues with flaky...
CarrierWave comes with a set of default configuration options which make sense in most cases. However, you should review these...
Sometimes you want to have a time in a given timezone independent from you Rails timezone settings / system timezone. I...
tl;dr: Upgrade the gem to at least 4.0.1 When you use rspec_rails in a version < 4 with Rails...
A rough guide how to implement a REST API. The discussion here includes some interesting points as well: Timestamps: ISO8601...
bundle outdated [--filter-major|--filter-minor|--filter-patch] Example output for bundle outdated --filter-major Other examples
Recently I made an upgrade from Bootstrap 3 to Bootstrap 4 in a bigger project. Here are some tips how...
Rails 6 includes a WYSIWYG editor, Action Text. It works out of the box quite well, but chances are that...
PostgreSQL has partial indexes. With a partial index you tell Postgres to only index rows matching a given query.
Rails supports alert and notice as default flash types. This allows you to use these keys as options in e.g...
SSHKit 1.9.0 might fail with the following error, when trying to deploy a Rail application. Upgrading the gem to version...
When deploying a Rails application that is using Webpacker and Capistrano, there are a few configuration tweaks that optimize the...
IRB 1.2 (shipped with Ruby 2.7, but works on 2.5+) brings pretty syntax highlighting and multiline cursor navigation. However, pasting...
Git diffs show the surrounding contexts for diff hunks. It does so by applying regular expressions to find the beginning...
Sometimes you want to find the inverse of an ActiveRecord scope. Depending on what you want to achieve, this is...
On some of our older projects, we use the mysql2 gem. Unfortunately, versions 0.2.x (required for Rails 2.3) and...
It sometimes happen that a database dump, that would want to insert into your development database, does not match the...
If you're using the webdrivers gem and VCR together, depending on your configuration, VCR will yell at you regulary...
If a model inherits from others or uses many concerns / traits, it might be hard to see in the code...
When logging in Rails, you can use the log_tags configuration option to add extra information to each line, like...
If you want to get the path of a file relative to another, you can use the expand_path method...
Rails 5.2+ supports "verbose query logs" where it shows the source of a query in the application log.