Ruby On Rails

Tutorials

Adding devise_token_auth to an existing Rails app

Adding devise_token_auth to an existing Rails app Ruby on rails is still the frontrunner for getting an MVP(minimum viable product) out of the door. Eventual when things go our way we want to introduce F/E framework on the customer facing side for various reasons(continue using the admin part as ...

Debugging MySQL lock errors in Ruby on Rails

Debugging MySQL lock errors in Ruby on Rails To achieve data consistency MySQL applies a set of quite complex rules for locking. It is possible that more rows get locked than one might expect. Especially when there is a lack of relevant database indexes.For example the following Rails code p...

Dynamic image resizing with Ruby and Serverless framework

Dynamic image resizing with Ruby and Serverless framework If you’ve grappled with resizing images for various page layouts and devices, you know the pain of accounting for all different types of screens, the scaling problem that serving the full-size original image presents, and the fact that large image...

Using strftime in a Rails view is probably a mistake

Using strftime in a Rails view is probably a mistake The strftime method appears in many languages, all the way back to C. The syntax of the (mostly impenetrable) formatting arguments haven’t changed that much in years and they’re remarkably consistent across languages.Ruby’s version is comprehensiv...

Puma 4: Hammering Out H13s—A Debugging Story

Puma 4: Hammering Out H13s—A Debugging Story For quite some time we've received reports from our larger customers about a mysterious H13 - Connection closed error showing up for Ruby applications. Curiously it only ever happened around the time they were deploying or scaling their dynos. Eve...

strong_password v0.0.7 rubygem hijacked

strong_password v0.0.7 rubygem hijacked I recently updated minor and patch versions of the gems our Rails app uses. We want to keep dependencies fresh, bugs fixed, security vulnerabilities addressed while maintaining a high chance of backward compatibility with our codebase. In all, it ...

Setting up Rails with Docker and Caddyserver

Setting up Rails with Docker and Caddyserver Show how to setup a basic implementation of Ruby on Rails with Docker, utilizing Caddyserver as the reverse proxy, tls, and load balancer.For this tutorial, I will be using a simple demo Rails application, which you can find the source code for he...

Safe Navigation vs Try in Rails (Part 2: Performance)

Safe Navigation vs Try in Rails (Part 2: Performance) This Note is an extension of Safe Navigation vs Try in Rails (Part 1: Basic Differences)Method try() comes from Active Support component of Ruby on Rails. Safe Navigation Operator is Ruby native feature.Let's check performance!.

Tutorial: Dialogflow Chatbot with Ruby on Rails

Tutorial: Dialogflow Chatbot with Ruby on Rails In this tutorial, we will build a chatbot interaction to Stream Chat using Ruby on Rails. At the end of the tutorial, you will have an application where users can log in and communicate 1:1 with a representative, supported by a chatbot. At the end...

How to simplify reading your Rails console

How to simplify reading your Rails console Rails console is a great tool when you are experimenting with your code, but if we have a lot of data it can become a bit complicated and time consuming.Currently I'm working on a chat app and while creating users the output in console became a bi...

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