[TYPO3-mvc] Creating a dynamic back-button for error page

[Claus Due]

Hi Frank,

> I got a "simple" task: Validate a model property depending on the value of another property :).
> 
> This is: Property 1 has to be required, if property 2 is empty and vice versa.
> 
> My plan is to write a custom validator class but I would like to ask you as experts what would be 
> the best point to do this ? Write a model validator or validate it in the controller ?

If I remember correctly, a while back Franz Koch (?) solved this by implementing a custom Validator to validate entire model objects, then ran that validator from the Controller and manually processed the errors returned.

Cheers,
Claus