This screencast ran a little long, and unfortunately I'll have to post the rest next week. We start with creating a DTO (Data Transfer Object) that will house our data as we pass it from the Controller, to the form and then back to the view. Zend_Form is used for validation and rendering

In this episode we are going to take a look at the new Code Contracts library which is out of MS Research and will be part of .Net 4.0/Vs2010.

Contracts allow for many different ways to perform language agnostic code validation and in this episode we are going to focus on how to setup pre ...

By default, validations will take place every time the model is saved. Sometimes you only want a validation to happen when certain conditions are met. See how to do that in this episode.

When a validation error occurs, Rails helpfully wraps the field in a div tag so you can style it. But sometimes you don't want this behavior. In this episode you will see how to customize it.

This screen cast demonstrates credit card validation within a Ruby application. It uses the credit card library from Lucas Carlson. This library validates the structure of a credit card number and can also return the type of card being used

One of the first things a web programmer learns is that the web is stateless. To get around this fact, web programmers use a variety of methods including form, URL, and cookie variables. A user can manipulate all of these variables, however. So, for example, you wouldn't pass the price of a product t...