Question

I am using JS sorting to call this method:

def sort
    params[:piece].each_with_index do |id, index|
      current_user.lineup.piece_lineups.update_all({position: index+1}, {piece_id: id})
    end
    render nothing: true
  end

and in my piece_lineup model I have:

after_update :update_associated_lineup

however it isn’t getting triggered by that update_all call. am i doing something wrong?

Answer 1

update_all method generates one SQL UPDATE query and that’s all. It doesn’t instantiate any ActiveRecord objects, so no validations or callbacks are triggered. To trigger callbacks you have to do something like that

piece_lineups = current_user.lineup.piece_lineups

params[:piece].each_with_index do |id, index|
  piece_lineups.
    select { |pl| pl.piece_id == id }.
    map { |pl| pl.update_attribute(:position, index + 1) }
end