[EP-tech] validation on upload field

[alfredo.cosco at gmail.com (Alfredo Cosco)]

Hello,
is there a way to put something like a validation control in an upload
field?

I have this problem, sometimes I have to migrate an archive to a
centralized one, there are always users that use empty spaces or special
chars in filenames, and this break migrations process.

Is there a way to refuse files named like:

my first paper.2017.pfd

or

feed'em all.pdf

or

hello world everyday.pdf

and force users to use right filenames?

Thanks,
Alfredo
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