Validating catalog fields

Hi to everybody,
I need to validate the content of a catalog field. I want - for instance - the input to be something like ABCD-ABC-ABC and possibly stop editing if the input is wrong.
Is it possible to achieve this? I saw that in the catalog module there's a "Enable additional format function" functionality but it appears to me as something devoted to output and not to input validation, right?

Thank you in advance

You can use the dca for something like that:

Code:

---

$GLOBALS['TL_DCA']['tablename']['fields']['rowname']['eval']['readonly'] = true;

---

here is an example (is it an email?):

Code:

---

$GLOBALS['TL_DCA']['tabellenname']['fields']['spaltenname']['eval']['rgxp'] = 'email';

---

regards

Uhm, this sounds interesting indeed!
Where should I publish this code? In the extension files? Where exactly? Can I create my own regular expressions as well?

Thank you

This is code for the dcaconfig.php in system/config/
Maybe you can make your own.. but contao has some by its own. Search for it, maybe the original will do what you need.

regards