数组中名称列表中的多个对象

I'm trying to create an individual record for each name in an array. The array originates via a form in one controller and the individual records need to be saved in a join (type) table (I know there are not "join" tables in mongo, but it's the best way to describe it). Currently running Rails 5 with Mongoid/MongoDB. I'm trying to create an individual record for e