NetefxValidator is a class for form validation, so it replaces the RequiredFields() validator.
Features:

• A lot of build in validationrules
• logical rule combination
• validationrule for unique database fields
• custom validation functions
• works in getCMSValidator() in Modeladmin
• ...

In version 0.3 there is no javascript validation at all. So you can disable js-validation in your _config.php

The latest version is now on https://github.com/lx-berlin/NetefxValidator

Documentation: http://www.netefx.de/Silverstripe-NetefxValidator.php

Form validation in Silverstripe 2.4

When you build forms in silverstripe, you can use a RequiredFields-validator (official documentation). This validator defines which fields have to be filled in. But often this is not enough. If you want to make sure, that your form (frontend or backend) is filled correctly, your rules have to be more restrictive. There are specific fields in sapphire, like the EmailField() (official API documentation), which have a validationrule themeselves. But it doesnt make sense to define a separate class for every field of your form just for validation purposes.

What is does:

You can use the NetefxValidator to perform any validation you want. You can write NetefxValidatorRules of several types and add them to the validator. Each rule belongs to a form field, has a type, parameters and an error message, which is displayed to the user, if the rule does not validate. There are different types of rules, like REQUIRED rules, which simply express, that a field has to be filled, numeric rules, which are used to compare an input field to a fixed value or to other input fields, REGEXP rules, which expect a regular expression to check for and FUNCTION rules, in which you can use your self-written functions or library functions. Finally you can combine rules to a new rule using logical rule combination.

What is missing:

• There is no Javascript validation at all.
• The validator is not integrated in module Userforms.

Installation:

Just move the folder "NetefxValidator" to your projectfolder.

Detailed Documentation:

http://www.netefx.de/Silverstripe-NetefxValidator.php

Release(s)

• Latest release

  Version: [Unreleased]
  Date: 2011-11-20
  Compatible with: SilverStripe 2.4.4, 2.4.5
  Download: NetefxValidator.zip
  

• Latest master build

  To get a preview of our next release, download the latest build of unstable git master branch here. Please be careful: this is more likely to contain bugs, especially on modules undergoing a lot of development.
  
  SHA hash: bcd27feed36ad3cd1e1031bb826d5319e98436c1
  Build Date: 2013-02-03
  Download:
  

  Unstable Git access: https://github.com/lx-berlin/NetefxValidator