Background information about session storage in Rails Rails has a default mechanism to store the session in the CookieStore. This...

You can use mail-tester.com to check your application's e-mails for issues that might cause e-mails to be...

...hard to understand, the helpers available differ for different versions of Rails and the behavior is subtly different. Make sure you read and understand the API before using these...

You can use the config.x configuration in combination with config_for to configure global settings for your Rails 4.2+ application...

In Capistrano 3, your Capfile requires 'capistrano/rails/migrations', which brings two Capistrano tasks: deploy:migrate and deploy:migrating. The former checks...

A general overview about why and how we migrate can be found under Migrating from Elasticsearch to Opensearch

I recommend install Node.js using nvm. This way you can have multiple Node versions in your ~/.nvm. You also won...

...changes it for the current repository. Since it's hard to remember which project behaves how, you should find a suitable global setting. Regardless which option you use you can...

...current branch. Caveat with current For most of us, current is the safest push behavior. However, it has a small side effect: When a branch with your local name does...

When MySQL refuses to use your index, there's a number of things that you may be doing wrong. One...

...styles from the document. See Styling a Web Component for this case. Applying JavaScript behavior to new elements All client-side JavaScript frameworks comes with mechanisms to activate JavaScript behavior...

...a framework mechanism you may use customElements.define() to register your custom element's JavaScript behavior with the browser directly. A big advantage of using the browser's customElements.define() is that...

It is just not worth the risk and you can always do better. Alternatives Instead, you should take a different approach. Here are several alternatives.

Integration tests give the code its rough form, whereas unit tests pinpoint specific behavior. During development, you are frequently changing levels. It may look something like this: Integration _ ___

...usage example, "happy path"> # Add a scenario for each use case. Examples are: error behavior, access rights, contexts, closer looks at parts of the feature Scenario: ... (This example uses Cucumber...

Note The maintenance mode is enabled on all application server as soon as the file /public/system/maintenance.html is present. Installation

...the old versions you wish to remove. Keep at least one recent, working kernel besides the one you are currently running. Address Metapackage Conflict (GA vs. HWE)

...holds your bash prompt. You might want to change it to serve your needs best. Here is how to: General non-printing escape sequences in your prompt have to be...

...blocks or confusingly sometimes also procs Those with "method semantics", called lambdas lambdas They behave like Ruby method definitions: They are strict about their arguments. return means "exit the lambda...

...the lambda literal -> (since Ruby 1.9.1) test = ->(arg) do puts arg end blocks They behave like do-blocks or simply "segments of code": They try to be smart about their...

Rails partials have a lot of "hidden" features and this card describes some non-obvious usages of Rails Partials.

Here is a bash script that I use to auto-configure displays on Ubuntu 24.04 with Xorg. Background

There are several tools for DNS debugging which offer you more or less information. Most of the time the more...

When loading a database dump created with pg_dump into your database, you might run into an error like

Why do we migrate? Due to a change in licensing, we cannot provide Elasticsearch versions >= 8.0. Version 7.17.x will...

...instead of using a more costing feature spec. This is especially useful because they become quite convenient when used with Capybara::Node::Finders and Capybara::RSpecMatchers. This allows to wirte...

...view might be too isolated, since view-specs will mock a lot of rails behavior and render the view independent from the controller-logic. Therefore it will be more applicable...

...visibilitychange event to be notified if visibility changes. This allows your background tab to become completely passive: function pulse() { // do expensive thing } let pulseInterval function schedulePulse() { if (document.hidden) { if (pulseInterval...

Most forms have a single submit button that will save the record when pressed. Sometimes a form needs additional submit...