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Type:
Task
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Resolution: Done
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Affects Version/s: None
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Component/s: None
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Labels:None
observed in mongoid 2.0.2: sorry for the lengthy code..
Scenario:
when I have a custom key, let's say the attribute :ident , and by accident there was a duplicate key,
so validation doesn't succeed, and the container / parent can't be saved ...
Possible Bug:
when you try to update the 'key attribute' , e.g. :ident of an instance, then the _id attribute does not get updated!
e.g. it does not follow the value of the newly updated key attribute. That looks like a bug to me...
How else could you fix validation problems? You'd have to update both item.id and item.ident?? not what I would expect...
class Container include Mongoid::Document embeds_many :items validates_associated :items end class Item include Mongoid::Document embedded_in :container field :ident key :ident validates_presence_of :ident validate :uniqueness_here_of_ident , :on => :update private def uniqueness_here_of_ident h = {} ; n = 0 container.items.each do |i| # check the parent object's items.. h[i[:ident]] ||= 0 h[i[:ident]] += 1 n += 1 end errors.add :ident , ":ident must be unique within the parent object" if h.keys.size != n end end c = Container.create c.items << Item.new(:ident => "one") => [#<Item _id: one, _type: nil, _id: "one", ident: "one", data: nil>] c.items.last.valid? => true c.items << Item.new(:ident => "one") => [#<Item _id: one, _type: nil, _id: "one", ident: "one", data: nil>] c.items.last.vaild? => false c.items.first == c.items.last => true c.items.last.ident = "two" <-- trying to fix the incorrect key attribute value => "two" c.items.last => #<Item _id: one, _type: nil, _id: "one", ident: "two", data: nil> <-- but _id does not follow the value of :ident !!