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Polymorphism with Many-to-Many Associations – A Teach Me To Code Tutorial
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Polymorphic associations are very simple, as are many-to-many associations. When you blend the two, it's not nearly as simple. Since there isn't a working build-in mechanism for many-to-many polymorphic associations. Here's a quick demo of what happens if you try to set up a traditional has_many :through association with a polymorphic association. I also show how to set things up so you can get the associated objects. Download 101.3 MB Download (iPod & iPhone) 45.5 MB
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