Force Custom Text field to uppercase

Hi,

You can add CSS code for that using text-transform: uppercase; on the input field so that the text appears uppercase in the input field.
Now with that, the text will appear uppercase in the input but won't be saved as uppercase.
You would need to also either:
- add a similar CSS to the area where the value is used to have it appear as uppercase
- add some javascript to the page where you have the input to force the uppercase while the text is being typed

Now a simpler approach would be to force uppercase with the pattern attribute in your custom field:
pattern="[A-Z]*"

Here is a page which discuss the different solutions:
www.the-art-of-web.com/html/input-field-uppercase/

Hi,

I think that the issue is that the star character has not been authorized.
Change the line:

if(!preg_match('#^([a-z0-9_-]+ *= *"[\p{L}\p{N}\p{Z}\p{S}\p{M} :\-;\(\)\{\}\[\]\']+" *)* *$#i', $fieldOptions['attribute'])){

if(!preg_match('#^([a-z0-9_-]+ *= *"[\p{L}\p{N}\p{Z}\p{S}\p{M} \+\*:\-;\(\)\{\}\[\]\']+" *)* *$#i', $fieldOptions['attribute'])){