Ruby on Rails Sunday, May 28, 2017

I wanna add a dropdown menu to my index view for the index action of my artists_controller Trying to use collection_select but it responds undefined method `collection_select' for nil:NilClass The idea is to list artists by genre

<div class="field"> <%= f.collection_select( :artist, :genre, Genre.all, :id, :name) %> </div>

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