Language Tutorial Archives | Spidren
Stepped Forms and Conditional Validation in Rails

Stepped Forms and Conditional Validation in Rails

ActiveModel validations in Rails are awesome, but what happens when your UI doesn’t exactly match your data model? Or when you want multiple levels of conditional validations? A useful web application requires...
How to Run Python and Ruby on Heroku with Multiple Buildpacks

How to Run Python and Ruby on Heroku with Multiple Buildpacks

One of my mentees here in codementor.io encountered a problem while running Python and Ruby together on Heroku. That session inspired me to write this tutorial—how to run more than one environment on Heroku. PROBLEM The project was working in Cloud9 without...
3 Steps to Set up a Ruby Environment on your macOS

3 Steps to Set up a Ruby Environment on your macOS

MacOS comes pre-installed with Ruby. In fact, if you run ruby -v on your terminal, it will point you to the pre-installed version. However, if you're developing in Ruby, be it core Ruby...
lesson,learned,ruby,rails app,dockerizing,learned from dockerizing,dockerizing ruby,ruby on rails,how to learned,tips to learned

learned from attempt of dockerizing Ruby on Rails app

Docker impressed me since first time I’ve heard about it on local development conference. Few years passed while I’ve tried this by myself. Here is a story of my experience with Docker...
Be Careful When Passing Ruby Objects as Method Arguments

Be Careful When Passing Ruby Objects as Method Arguments

There's one part of the Ruby language that has tripped me up on several occasions. In Ruby, passing an object (i.e. just about everything in Ruby) as an argument to a method...

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