thedersen/backbone.validation — pull request #213 by kochizufan (2014-03-04 08:15:01+00:00)
Title: preValidate method cannnot handle conditional validation.

As README says in
https://github.com/thedersen/backbone.validation#do-you-support-conditional-validation
Conditional validation is allowed, but in preValidate method, it cannnot work.
So I make patch for it.