has_many thgough
https://baylorrae.com/using-ransack-with-habtm
select box
https://stackoverflow.com/questions/13959005/rails-ransack-drop-down-list-collection
has_many thgough
https://baylorrae.com/using-ransack-with-habtm
select box
https://stackoverflow.com/questions/13959005/rails-ransack-drop-down-list-collection
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