Ruby On Rails

Tutorials

Form validations with HTML5 and modern Rails

Form validations with HTML5 and modern Rails Recently I have worked on form-validation systems in a couple of modern Rails apps, and I learned a few things along the way I would like to share.My starting point was:I wanted to use modern Rails: Webpacker, Turbolinks, remote forms and Stimulus...

Build, Package, and Deploy an AWS Lambda using the Ruby Runtime

Build, Package, and Deploy an AWS Lambda using the Ruby Runtime This post is part of our complete guide: How to Build a Serverless Application on AWS using RubyThis post is a complete guide. That means we are going to create an AWS Lambda in the console first and then move onto using AWS SAM on our local machi...

Ruby - rescue from errors with a grace

Ruby - rescue from errors with a grace Find out how to refactor rescue in Ruby language to easily deal with the same error but with different error messages.How many times you had to deal with the external API’s errors in order to make your application behaves properly? You may end up ...

Exploring TracePoint in Ruby

Exploring TracePoint in Ruby TracePoint is an extremely powerful feature of Ruby, but it can be a bit difficult to use and wrap your head around. Let’s take a look at what it does and how we can use it to do some awesome.

Be Careful Assigning to has_one Relations

Be Careful Assigning to has_one Relations Most of the time, when building relationships between models, you typically use has_many and belongs_to. There are some circumstances where a has_one relationship is more appropriate.However, the behaviour of has_one has some quirks that make it a...

Early Hints and HTTP/2 Push with Falcon

Early Hints and HTTP/2 Push with Falcon As web standards continue to evolve, Rack has sometimes struggled to provide appropriate interfaces. HTTP/2 push promises expand on the request-response model of traditional web applications, and requires explicit support from both servers and app...

Make Delegated Methods Private in Rails

Make Delegated Methods Private in Rails Recently, I came across some of my old code that uses Rails’ delegate method. Take a look at the following example, where I’m delegating a couple of methods to an instance variable, but want to make them private.

Tips for running free dynos on Heroku in 2019

Tips for running free dynos on Heroku in 2019 Heroku has changed how they handle free dynos multiple times over the years, so you’d be excused for being a little lost about the current state of things. The bottom line is that while it’s possible to run a 24/7 production app on a free Heroku d...

Guide to devise_token_auth: Simple Authentication in Rails API

Guide to devise_token_auth: Simple Authentication in Rails API I wanted to create an authentication system for my Rails API, but one thing about APIs is that you can't use sessions or cookies for authentication.So instead, I used the gem devise_token_auth, which uses tokens. Put simply, this is how it works: ...

A library for bulk insertion of data into your database using ActiveRecord.

A library for bulk insertion of data into your database using ActiveRecord. activerecord-import is a library for bulk inserting data using ActiveRecord.One of its major features is following activerecord associations and generating the minimal number of SQL insert statements required, avoiding the N 1 insert problem. An e...

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