Rails 3 multiple has_and_belongs_to_many relationships

Question

I'm creating a rails app that contains lists. Lists are made up of:

List_Source (e.g. National Geographic)
List_Elements (e.g. Tanzania)
List_Tags (e.g. Travel)

A list has a single source, multiple elements, and multiple tags. A source has multiple lists. A tag is used for multiple lists.

I have models/tables for lists, sources, list_elements, and tags. How should I organize the tables so that I can pull into one master table of lists the source, elements, and tags?

score 0 · Answer 1 · answered Dec 30 '13 at 14:32

0

Railscast has the answer here. Basically you create a new model (e.g. Listable) and then use has_many_through for each of the other models to create this many to many relationship.

http://railscasts.com/episodes/47-two-many-to-many

answered Dec 30 '13 at 14:32

william tell

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Rails 3 multiple has_and_belongs_to_many relationships

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