#486 invalid
Bobby Calderwood

#initialize does not get called upon loading from find

Reported by Bobby Calderwood | July 26th, 2008 @ 07:31 PM

class Model

include DataMapper::Resource

property :id, Integer, :serial => true

attr_accessor :bar

def initialize

@bar = "baz"



foo = Model.new

foo.bar #=> "baz"


foo = Model.first

foo.bar #=> nil

Why is Model#initialize not called when the model is instantiated from a find? That was surprising to me.

Comments and changes to this ticket

  • Dan Kubb (dkubb)

    Dan Kubb (dkubb) December 1st, 2008 @ 01:56 AM

    • State changed from “new” to “invalid”
    • Assigned user cleared.

    When loading an object from a persisted state we use Model.allocate to get an instance, and then set the ivars in the object using the values that were retrieved.

    It's by design that we bypass #initialize. Perhaps if a good case could be made, we'd consider using #initialize, although currently there are no plans to do so.

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