Rails Activeadmin - custom association select box
Yes, that is possible. I assume you want to use a DropDown list box for members to select a user from User model.
form do |f| f.inputs do f.input :user_id, :label => 'Member', :as => :select, :collection => User.all.map{|u| ["#{u.last_name}, #{u.first_name}", u.id]} f.input :description endend