Ruby On Rails

Tutorials

Peter's Adventures in Ruby: The Ruby inplace bug

Peter's Adventures in Ruby: The Ruby inplace bug It is strongly recommended that you read my article on the ways to create Ruby strings in C extensions if you’re not familiar with Ruby’s C string APIHere’s a story of string corruption in MRI when the wrong function is used to create the Ruby str...

Best image uploader for Rails — Revisited

Best image uploader for Rails — Revisited Three years ago I wrote about how to choose the right uploader gem for your project. Since the time the original article has been published, all mentioned libraries got updated, one got deprecated, and two new libraries have appeared. I feel it’s ...

How to Improve Ruby on Rails App Performance

How to Improve Ruby on Rails App Performance Application speed and performance are crucial when it comes to project success. Users expect the app to load as quickly as possible, and our main task is to meet their expectations.Both experienced IT professionals and junior developers have tried...

HexaPDF gem

HexaPDF gem HexaPDF has quite a lot of documentation and it is organized in the following way to make it easier for you to find what you need:.

Insert page specific CSS or JS using content_for

Insert page specific CSS or JS using content_for There might be cases where you want to insert some CSS or JS snippet into a specific page only , for example inserting Stripe JS and CSS only on the payment page, but not on other pages of the same controller.If you insert the snippet into layout/...

Rails 6.1 adds values_at attribute method for Active Record

Rails 6.1 adds values_at attribute method for Active Record Rails 6.1 simplifies retrieving values of attributes on the Active Record model instance by adding the values_at attribute method. This is similar to the values_at method in Hash and Array.Let’s check out an example of extracting values from a Use...

Data pipelines in Ruby on Rails - Corey Martin

Data pipelines in Ruby on Rails - Corey Martin If you need to bring a lot of data into your app, a data pipeline can help. This article describes how to build a simple data pipeline with Ruby on Rails, Sidekiq, Redis, and Postgres.What’s a data pipeline?A data pipeline takes information from o...

Setting Up Cypress, Rails, and CircleCI

Setting Up Cypress, Rails, and CircleCI Recently I set up a Rails app with Cypress end-to-end specs on CircleCI. Capybara's the Rails default for this, but Cypress is better. It's faster, more stable, and its in-browser spec runner is a much better experience than writing specs in Capyb...

The art of errors in Ruby

The art of errors in Ruby Some processes are very error-prone. A good example is requesting the data from the API or any other external source. A timeout error might be raised, but it does not mean that we can't pull the resource that we are requesting. Sometimes all we ne...

Introduction to Rails testing with RSpec and Capybara

Introduction to Rails testing with RSpec and Capybara I didn’t understand the importance of testing and used to think writing test was an extra effort (my app already work well when I wrote it, why should I spend extra time to write test for it?), boy I was so wrong 😅.Now I work in an enterprise hand...

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