Ruby On Rails

Tutorials

Using Scenic and SQL views to aggregate data

Using Scenic and SQL views to aggregate data The Ruby on Rails (RoR) community is known to be large and established and takes great benefit one of the largest packages repository, RubyGems, serving 147k packages at the time of writing.

Deploying a Rails 5.2 PostgreSQL app on AWS Elastic Beanstalk

Deploying a Rails 5.2 PostgreSQL app on AWS Elastic Beanstalk It’s official, having used Heroku for all my Rails projects so far spoiled me rotten. After receiving some AWS credits thanks to a pitch competition, I decided to deploy my latest project on Elastic Beanstalk (AWS’ Heroku competitor), and all I ha...

Sandi Metz' Rules For Developers

Sandi Metz' Rules For Developers Here are the rules:Classes can be no longer than one hundred lines of code.Methods can be no longer than five lines of code.Pass no more than four parameters into a method. Hash options are parameters.Controllers can instantiate only one object. T...

Ruby Memoization and Alternatives

Ruby Memoization and Alternatives Memoization is often used when deriving values from other state on our objects. Saving derived state to an instance variable is a form of caching and comes with all the associated gotchas (cache invalidation!).Most of the time, this caching is a f...

Build Rock Solid Ruby On Rails App With BDD

Build Rock Solid Ruby On Rails App With BDD Behavior-driven development is basically evolved from Test-driven development. It differs by written in different languages and it will improve the communication between tech and non-tech teams and shareholders because the test cases written used ...

Protocols in Ruby → Allow Implicit Inheritance

Protocols in Ruby → Allow Implicit Inheritance There are problems with implicitness. Always. Sooner or later you’ll get into very hard to understand and debug an issue, induced by some indirect initialization. Yeah, the warning message about implicit delegation was printed during class loading...

Ruby metaprogramming for beginners → Elixir-like specs

Ruby metaprogramming for beginners → Elixir-like specs Erlang and hence Elixir are dynamically typed languages. They both have extended abilities to type check in compile time using typespecs. Here are an introduction and more detailed documentation.Basically one might declare the specification of the...

Tips and methods to write a better Ruby code

Tips and methods to write a better Ruby code 'Ruby is simple in appearance, but is very complex inside, just like our human body'. This quote by Yukihiro Matsumoto means a lot for Rubyists. Because Ruby is intuitive and beautiful but has many work secrets that you don't realize. And knowing ...

Routes in Ruby on Rails Using Resources and Records to Define Urls

Routes in Ruby on Rails Using Resources and Records to Define Urls Ruby on Rails has a set of pre-built helper methods to create routes for web pages in your application. While they can be simple to get started, they can be configured to generate a range of customisable routes and pages for your web.

A Beginner's Guide to Service Objects for Ruby on Rails

A Beginner's Guide to Service Objects for Ruby on Rails Rails follows a Model-View-Controller pattern. This raises questions around where programming logic should go once a Ruby on Rails application reaches a certain size. Generally, the principles are:Forget fat Models (don’t allow them to become bloa...

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