Redmine

Hi to all you, I have to modify issues creation/editing by adding the start time (in the database).
Start time (and similarly end time) can be set in the view with a select for hours (0..23) and a select for minutes (0..55): in the database I added a column to the issue table to store start time. Since the new information in the view isn't stored in the database, I defined virtual attributes and set up things so the database column can be set properly. Here's what i've added:

attr_accessor :end_hour, :end_minute, :start_hour, :start_minute

before_validation :get_times

validate :time_validations

#before_save :set_times

  def time_validations
    logger.info "Start hour: " + @start_hour.to_s

    if @start_hour.blank? || @start_minute.blank?
      errors.add :start_hour, "can't be left blank" 
    end
  end

  def get_times
    logger.info "get_times, ora inizio: #{@start_hour}" 
    @start_time = @start_hour.to_i * 60 + @start_minute.to_i
    @end_time = @end_hour.to_i * 60 + @end_minute.to_i
  end

In a test project created from scratch everything worked fine, but in Redmine the instance variables of start_hour.. are nil. Why?
Thank you, greetings

nicola