When you have a powerful machine with many CPU cores, you might run into an error like
You can use .ids on an ActiveRecord scope to pluck all the ids of the relation: # Modern Rails User.where("users.name...
Here is how to make Rome datepicker look like the rest of your Bootstrap 4 application. Rome comes with very...
From at least Rails 4, the ActionView tag helper turns Array values of HTML options into a single space-separated...
In case you're wondering, when concat-ing server certificate and intermediate certificates, the server certificate comes first.
Webpacker is Rails' way of integrating Webpack, and version 4 has been released just a few days ago, allowing us...
RSpec >= 3.3 added aggregate_failures, which allows multiple failures in an example and list them all, rather than aborting on...
If you have a PostgreSQL dump in the custom format you can can view the text format dump (plain SQL...
We forked trusty memoizer to make two changes: Memoized methods now preserve their arity. Previously all memoized methods had an...
Class-level process definitions are only applied to the original file Versions are generated based on the processed original file...
See the attached link for a useful overview of modern (and classic) DOM API methods, like matches, contains, append, cssText...
Bundler 2 requires at least Ruby 2.3.0 and RubyGems 2.5.0. You might get the following error when you try to...
Carrierwave includes some handy helper methods you can use to resize your images. Here is a quick summary of them...
For searching in large database tables we usually use PostgreSQL's fulltext search capabilities. While this works reasonably well for...
This is a presentation from 2019-01-21. Summary We want to move away from jQuery in future projects
When restoring a PostgreSQL dump using pg_restore, you usually add the --clean flag to remove any existing data from...
When building an application that sends e-mails to users, you want to avoid those e-mails from being classified...
If your app does not need to support IE11, you can use most ES6 features without a build step. Just...
The standard way to abort async code is that your function takes a AbortSignal { signal } property. The caller can use...
Suggested Workflow Set the ruby version in .ruby-version to 2.3.5, then perform these steps one by one, fixing errors...
Remember How to skip Sprockets asset compile during Capistrano deployment and Automatically skipping asset compilation when assets have not changed...
Rails ships with two separate build pipelines: Sprockets ("asset pipeline") and Webpacker. Webpacker has many more moving parts, but allows...
When your code does not behave as expected, you can use a debugger statement ("breakpoint") at any point in your...
When doing Basic Authentication, your browser will send an "Authorization" header. Its value is simply a Base64-encoded representation of...