Ruby On Rails

Tutorials

Diagnosing performance issues in Rails applications

Diagnosing performance issues in Rails applications Almost everyone who works on a large Rails application will eventually have to deal with performance problems. For better or worse, there are dozens of different types of performance problems, which can make it hard to identify which one you’re de...

How to Create a AWS Lambda Layer of Your Gemfile / Ruby Gem Dependencies

How to Create a AWS Lambda Layer of Your Gemfile / Ruby Gem Dependencies If you use AWS SAM to build and deploy your serverless Ruby functions, it'll take care of building your dependencies on a function by function basis and package them up for deployment. Great!But if you don't want to use SAM, using gems with native...

A guide to creating forms in Ruby on Rails 6

A guide to creating forms in Ruby on Rails 6 At a high level, there are two ways of creating forms in Rails.1) We can create the entire form by hand using HTML just as we would in any static HTML file.2) Alternatively, we can use a powerful form_with helper that makes our lives much easier. ...

Truemail - configurable framework agnostic plain Ruby email validator/verifier. Verify email via Regex, DNS and SMTP

Truemail - configurable framework agnostic plain Ruby email validator/verifier. Verify email via Regex, DNS and SMTP Email validation is a tricky thing. There are a number of different ways to validate an email address and all mechanisms must conform with the best practices and provide proper validation. The Truemail gem helps you to validate emails via regex pa...

Migrating Classic Slack Ruby Bots to Granular Permissions

Migrating Classic Slack Ruby Bots to Granular Permissions Slack recently introduced granular permissions and is now requiring all new apps to use those. The old apps are called classic apps, and new apps are called … apps. Slack also provided a migration guide.As of December 4th, 2020 Slack no longer acc...

Automatically migrate database when pushing to Heroku

Automatically migrate database when pushing to Heroku I used to freak out when seeing this, but most of the time it is caused by me forgetting to run rake db:migrate after deploying a feature which has new database migrations.If you view logs of the app, and see there’s an error saying ‘relation “tab...

Ruby Enumerable tally

Ruby Enumerable tally For the Advent of Code, I was curious if there was a good way to do this in one line[1] (no technical reason, just because...)Not sure why, but it dawned on me this was likely something that Ruby would have built in (again, just because). It turns...

Why you shouldn’t inherit from Ruby’s core classes (and what to do instead)

Why you shouldn’t inherit from Ruby’s core classes (and what to do instead) Sooner or later you’ll want to subclass Ruby’s String, Array, or Hash. In this now-free RubyTapas video, you’ll learn why that’s a bad idea… and what to do instead.Director’s commentary: This was originally published as RubyTapas episode .

Squash Unexpected-End errors with syntax_search

Squash Unexpected-End errors with syntax_search Have you ever hit an error that you just plain hate? Back in 2006, I was learning to program Ruby and following an example from a book. I typed in what I.... I was beyond confused about this unexpected end error. end is a keyword. Right? How could...

How do I make testing a habitual part of my development work? - Code with Jason

How do I make testing a habitual part of my development work? - Code with Jason One of the most common questions asked by Rails developers new to testing is: how do I make testing a habitual part of my development work?It’s one thing to know how to write tests. It’s another thing to actually write tests consistently as a norm...

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