Ruby on Rails

@postis is an string.

Now i see where i the problem. I fix them like so:
def posti_multiple
@postis = Posti.find(params[:posti_ids])
a=Posti.find_by(numero: params[:posti_ids])
a.update_column(:stato, "checked")

end

When i have for example posti_ids[" any number"], one seat disappear on
the view. When i have posti_ids["any number", "any number", ... ], one
seat also desappear but i don't want that. All of seat wich are choice
must be disappear. I think i can do some loop??

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