server validation: how to disallow quotes on filename?
I already applied the alphanumeric rule to a file field validation allowing only uppecases, lowercases, numbers and few charaters (_-.), excluding the parenthesis.
But the page crash while uploading a file containing a single quote. I already know this is a reserved characters, but it can happen that a a site visitor doesn't know this.
How can I solve this? I'm using DB1, at the moment.
I have DB2 but I can't migrate all live websites now.