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PayPal Express Checkout
PayPal Express Checkout is easy to add to an existing ordering system. See how in this episode.
(15 minutes)
PayPal Security
This episode shows how to encrypt the variables passed to PayPal and verify the authenticity of the payment notifications (IPN).
(11 minutes)
Active Merchant Basics
Active Merchant is a great library for handling credit card transactions. In this episode I will show you the basics of using it to communicate with PayPal's gateway.
(10 minutes)
Contributing to Rails with Git
If you want Rails to behave a certain way, try changing it and submitting a patch. This episode will show how to do exactly this using Git.
(11 minutes)
Gem Dependencies
In Rails 2.1 we now have the ability to set gem dependencies. Now it's easier than ever to specify which ruby gems our rails app relies on.
(6 minutes)
Request Profiling
You can use profiling to determine where the performance bottlenecks are in specific Rails actions. Watch this episode for details.
(10 minutes)
YAML Configuration File
Application configuration shouldn't be spread throughout your code base. Instead a much better place to put it is an external YAML file. See how to do that in this episode.
(7 minutes)