[TYPO3-dev] checking the values of TCA user fields

[Martin Kutschker]

Dmitry Dulepov schrieb:
> Hi!
> 
> Martin Kutschker wrote:
> 
>> Does it makes sense to add "evalFunc"? To me a field specific function 
>> is cleaner than a hook function that needs to check for the "right" 
>> table/field in the data.
> 
> But how do you check that value is valid? It cannot be PHP, must be 
> JavaScript currently.

No. Althpough there is a "live" check with JS, the value is checked with 
PHP again (without feedback!).

The JS can (and must) be added by the rendering function.

The check functions are more post-processing functions for transformation 
and clean-ups than validation. Nonetheless a user fields may need such 
transformations as well. Stupid example: external represention of an 
integer as a binary numeber (with 0 and 1). On "check" the string needs to 
be converted.

Masi