Redmine

!!recently,focus on second development of redmine,some question,as follow:
1、I want to save a object in registering together with object User,but it doesn't work,no any tips.
register_enterprise method of account_controller.rb :
#User of enterprise self-registration
def register_enterprise
redirect_to(home_url) && return unless Setting.self_registration? && Setting.enterprise_registration? || session[:auth_source_registration]
if request.get?
session[:auth_source_registration] = nil
user user = User.new(:language => Setting.default_language)
else
user user = User.new(params[:user])
@user.admin = true
@user.register

if session[:auth_source_registration]
        @user.activate
        @user.login = session[:auth_source_registration][:login]
        @user.auth_source_id = session[:auth_source_registration][:auth_source_id]
        if @user.save
          session[:auth_source_registration] = nil
          self.logged_user = @user
          flash[:notice] = l(:notice_account_activated)
          redirect_to :controller => 'my', :action => 'account'
        end
      else
        @user.login = params[:user][:login]
        @user.password, @user.password_confirmation = params[:password], params[:password_confirmation]

@enterpise = Enterprise.new(params[:enterprise])
        @enterpise.introduction = params[:introduction]
        @enterpise.register

case Setting.self_registration
           when '1'
             register_by_email_activation(@user)
           when '3'
             register_automatically(@user)
           else
             register_enterprise_manually_by_administrator(@user,@enterpise)         

end

end
    end
  end

def register_enterprise_manually_by_administrator(user,enterprise, &block)
     if enterprise.save and user.save
    # Sends an email to the administrators of enterprise
      Mailer.deliver_account_activation_request(user)
      account_pending
    else
      account_pending_failing
    end
  end

def account_pending_failing
    flash[:notice] = l(:notice_account_pending)
    redirect_to :action => 'register'
  end

def account_pending
    flash[:notice] = l(:notice_account_pending)
    redirect_to :action => 'register'
  end