How do I add error messages to a particular control if multiple controls share
the same property name on the same page? E.g., say I have a user registration
form, where usernames are unique. If a user enters a duplicate username, in my
action bean I can add an error like so:
facesMessages.addToControlFromResourceBundle("username", "usernameExists");
But say I have a batch user registration process that allows someone to
register 10 users at a time. If I use the same code, then the error message
gets displayed at the top of the page and the user doesn't know which username
is invalid. I could change the error message to contain the invalid name, but
I would rather display it next to the relevant control. So how do I do that?
Thanks!
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