Unique field, check lowercase

How can I check if a field is unique using for example just the lowercase value?
For example English and english are now two different values but I would avoid the insertion of the second one. Is it possibile in some way?


Hi elia,

That’s a good idea, but unfortunately not something the system currently supports. It could be a feature request, or perhaps a plugin you write?

For example, a hacky way to do it might be to use the Computed Fields plugin again, to make a lowercase version of a field and check the uniqueness of that field instead.

But that might be pretty confusing UX for your editors. It would probably be cleaner to do similar logic in a field extension or popup modal instead.