The Flatiron School | Why You Don't Need Has_and_belongs_to_many... - 0 views
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When creating associations between models, you almost never know how this relationship will blossom as your application grows.
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setup a solid has_many :through relationship with an associated join table, you provide yourself with a huge amount of flexibility down the road.
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A has_many :through association is used to setup a many to many relationship with another model
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