CopyList controller example

copy_list_controller_example.rb

if !params[:new_list_name].present?
  # make sure we're scoping to the logged in user
  @list = current_user.lists.find(params[:id])
  
  @new_list_name = params[:new_list_name]
  if @new_list = CopyList.call(@list, @new_list_name)
    redirect_to lists_path, notice: "#{@new_list_name} created from your selected list"
  else
    redirect_to :back, alert: "We were unable to copy your selected list"
  end
else
  redirect_to :back, alert: "Please enter a name for the new list"
end