RubyFlow The Ruby and Rails community linklog


The Ruby and Rails community linklog

Made a library? Written a blog post? Found a useful tutorial? Share it with the Ruby community here or just enjoy what everyone else has found!

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Validating the Content-Type of Active Storage Attachments

Full validation support for Active Storage attachments won’t be arriving until Rails 6. Until then you’ll need to write your own custom validators to add this missing functionality. Last time I showed you how to write an attachment presence validator. Next I’ll share a validator which can restrict the content-type of your attachments. Drop this bit of code and its accompanying RSpec matcher into your project to tide you over until the next Rails release.

The nil value in Ruby

In this article we’re going to explore the following topics:

CanCanCan that scales

A simple explanation on how to use CanCanCan so that it scales with your application and does not impact your performances. The method is very simple and allows you to separate permissions for each model as Pundit does. [more inside]

Adding an Attachment Presence Validator to Active Storage

If you’re using Active Storage, you should know that it does not (yet) provide a way to validate the presence of an attachment. Unlike Paperclip or the other popular file upload gems, there’s no validates_attachment_presence method you can use. Luckily it’s pretty easy to roll this out ourselves. I’ll share the custom validator code that I use to add in the missing validator in this post:

Alias in Ruby

In the following article, we’re going to explore the following topics:

101: Advanced OOP Structure in Rails Practice

When thinking about more advanced OOP structure, one can sometimes ask – how to incorporate it into a Rails application? I will try to answer that question in this blog note, introducing some advanced OOP concept into a Rails application (without any architecture gems). [more inside]

Cutting corners is a short-sighted strategy #noshortcuts

In between my travels to Thailand and Japan I felt inspired by a Twitter conversation with Pieter Levels from where the main subject was how 100% bootstrapped (ie: no external investment) and fully-independent lifestyle business companies were not perceived as ambitious. [more inside]

Optimize Dokku Deployment Speed for Ruby on Rails apps with Dockerfile

Dokku lets you setup Rails hosting infrastructure on a simple VPS without much dev ops experience. Although it is easy to get started, a default config might result in very slow and unreliable deployments. In this blog post, I will describe how I’ve improved my Dokku based Ruby on Rails (NodeJS with Yarn and Webpack) application deployment speed by over 400% using a Docker image Dockerfile. [more inside]

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