# File app/controllers/proposals_controller.rb, line 216
  def get_person_by_login
    unless @person = Person.find_by_login(params[:login])
      flash[:error] << _('The specified login is not valid or does not match ' +
                         'any valid users')
      redirect_to ( @proposal ? 
                    {:action => 'authors', :id => @proposal} :
                    {:action => 'list'})
      return false
    end
  end