Responding to the OPTIONS HTTP method request in Rails: Getting around the Same Origin Policy
Code example for implementing Cross-Origin Resource Sharing (CORS) in Rails.
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The Ruby Object Model
In Ruby (almost) everything is an Object. While this enables a lot of powerful features, this concept might be confusing for developers who have been programming in more static languages, such as Java or C#. This card should help understanding t...
The JavaScript Object Model: A deep dive into prototypes and properties
Speaker today is Henning Koch, Head of Development at makandra.
This talk will be in German with English slides.
Introduction
As web developers we work with JavaScript every day, even when our backend code uses anothe...
Lightning Talk: Coverage based Test Case Prioritization in Ruby on Rails
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Although many examples ...
Invoices: How to properly round and calculate totals
While it might seem trivial to implement an invoice that sums up items and shows net, gross and vat totals, it actually involves a lot of rules and caveats. It is very easy to create invoices where numbers don't add up and a few cents are missing....
Upgrading Rails 2 from 2.3.8 through 2.3.18 to Rails LTS
This card shows how to upgrade a Rails 2 application from Rails 2.3.8 through every single patch level up to 2.3.18, and then, hopefully, Rails LTS.
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This release has [many minor changes and fi...
Good real world example for form models / presenters in Rails
We have often felt the pain where our models need to serve too many masters. E.g. we are adding a lot of logic and callbacks for a particular form screen, but then the model becomes a pain in tests, where all those callbacks just get in the way. O...