reports.rb

class Report
  def update_tipifications(tipifications)
    self.tipifications = tipifications
    analizar!
    save!
  end
end

class ReportsController
  def save
    params[:report].each do |report_id, report_params|
      report = Report.find(report_id)
      report.priority = Priority.find(report_params[:priority_id])
      report.comments.create! :comment => report_params[:comment], :user => current_user unless report_params[:comment].blank?
      report.update_tipifications(report_params[:tipification_ids].map { |id| Tipification.find(id) }) unless report_params[:tipification_ids].empty?
    end

    redirect_to :action => 'listing'
  end
end