class ActiveRecord::RecordNotFound

Raised when Active Record cannot find a record by given id or set of ids.

def initialize(message = nil, model = nil, primary_key = nil, id = nil) 

def initialize(message = nil, model = nil, primary_key = nil, id = nil)
  @primary_key = primary_key
  @model = model
  @id = id
  super(message)
end