[Flow] Validation > Exception instead of going back to newAction

[Stephen Bungert]

This is a validator that makes sure entities are unique

https://git.typo3.org/Packages/TYPO3.Flow.git/blob/master:/Classes/TYPO3/Flow/Validation/Validator/UniqueEntityValidator.php

I use a modified version of it to make sure my user models don't have an 
already used email address, amongst other things.

You add the annotation to the controller action, something like this:


 /**
  * Updates a user profile.
  *
  * @Flow\Validate(argumentName="$user", 
type="\Vendor\Package\Validation\Validator\UniqueEntityValidator", 
options={"identityProperties"={"email"})
  * @param \Vendor\Package\Domain\Model\User\User $user A new user to 
update.
  * @return void
  */
 public function profileUpdateAction(\Vendor\Package\Domain\Model\User\User 
$user) {

You get access to the whole object not just a  property, so maybe you could 
use your build date method in the validator to if the date and time 
properties are valid.