Rails - Aug 2011 - has_many :through, collection<<(object) and duplicates.

Hi,

I''m facing a strange behavior in Rails with the has_many association
and
the generated collection<<(object, ...) method that comes along.

I''ve got an Object model and a Tag model, plus a taggings table to join
the two together.

On Object, I set these associations:

        has_many :taggings, :as => :taggable, :dependent => :destroy
        has_many :tags, :through => :taggings, :uniq => false

(:uniq => false is the default value, I''ve left it to insist on that
point)

Now let''s say I create a new Object and save it.
In an after_save callback on Object, I add a few tags:

        self.tags << Tag.find_or_initialize_by_name("hey")
        self.tags << Tag.find_or_initialize_by_name("ho")
        self.tags << Tag.find_or_initialize_by_name("hey")

So, twice the same tag "hey" and another one "ho". Nothing
fancy.

Once this is done though, I''ll get this:

        puts self.tags.inspect          #  [ "hey", "ho" ]
        puts self.tags(true).inspect  # [ "hey", "ho",
"hey" ]


I don''t get why I don''t see all the three tags at first?!!

Because the second line works, I assume my model needs to be reloaded
from DB, but why would it show any tag in the first call then?

Am I missing something?
Thanks for your help!

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Nobody? :\

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