I am working on a project, and on one form we have a select (drop-
down) box where the user needs to be able to select from a list of
clients. The box is currently being populated with:
<%= collection_select(:client, :id, @account.clients, :id, :name) %>
The problem is that some of these clients may have already been
selected, and we need to remove them from the list. Is this possible?