ruby on rails - Activerecord mass assignment to virtual attribute -
i'm posting following datas: {"commit"=>"create", "conversation"=>{... , "watchers_ids"=>["2", "3", "4", "5", ...]}} to following action def create @conversation = @current_project.conversations.new(params[:conversation]) ... end and following class class conversation < rolerecord include watchable end with module module watchable def self.included(model) model.attr_accessible :watchers_ids end def watchers_ids=(ids) add_watchers( ids ) end def watchers_ids ... end ... end however, mass assignment don't work virtual attribute. idea? there's code that's missing there... if have has_and_belongs_to_many :watchers should able assign watcher_ids without having custom module stuff. then if can't attribute protected attr_protected or, more likely, attr_accessible call in model. can set manually: @conversati...