Validating_uniqueness_of creating problem while updating

Rails
1

Hi!

Im validating name field in “dev” model by checking its uniqueness. but
while editing that particular entry, the system again validates for
uniqueness of name. so if i dnt change name while editing , it gives me
error: name has already been taken.

my update code is :

  1. def updateDevice
  2.   @device=Dev.find(params[:id])

  4.   @devtype=Devtype.find_by_id(params[:device][:devtype_id])

  6.   if request.post?

  8.       @device.update_attributes!(params[:device])

  9.       redirect_to :action=>"showDevices_admin"

  10.     end

  12. end

what is the problem exactly??
Thanx in advance!
sups

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2

Try validates_uniqueness_of :name, :on => :create