Does exists a Validation framework in ExtJs 3.4?

Question

I'm developing with extjs 3.4 and I'd like to know if exists a pluging or library that I can used to validate models

Answer 1

I agree with the above no built-in framework for modal validation

Try for writing custom validation ExtJS Model Validations: Dates (How to)

and check this also http://www.sencha.com/forum/showthread.php?125545-EXTJS-4.0-Model-and-remote-validation