NetTuts.com has posted the latest in their series about the Laravel framework with this new post, a look at creating filters, validators and working with files.

In this Nettuts+ mini-series, we’ll build a web application from scratch, while diving into a great new PHP framework that’s rapidly picking up steam, called Laravel. In this lesson, we’ll be learning about some very useful Laravel features: filters, and both the validation and files libraries.

They continue improving their sample application ("Instapics") and show you how to:

• Create a filter to run before or after the request is handled
• Apply a set of validation rules to a given dataset
• Handle custom error messaging
• Work with local files and uploads

They then take all of this and apply it to their application, creating an "auth" filter and login form, creating a form and doing some validation on its results and letting the user upload an image file.