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Home/ Questions/Q 6383019
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Editorial Team
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Editorial Team
Asked: May 25, 20262026-05-25T02:35:51+00:00 2026-05-25T02:35:51+00:00

I have a many-to-many relationship between two models, Lists and Users. When a user

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I have a many-to-many relationship between two models, Lists and Users.

When a user creates a list, it should automatically add it to the User.lists array. Right now, I have this working but it smells a bit:

def create
    @list = current_user.lists.new(params[:list])
    current_user.lists << @list

Is there a way to get this down to one line? Not passing @list into the collection with << but have it there automatically when I build the new list?

Thanks

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  1. Editorial Team
    Editorial Team
    2026-05-25T02:35:51+00:00Added an answer on May 25, 2026 at 2:35 am

    You just have to do this :

    @list = current_user.lists.create(params[:list])
    
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