使用Rails 3.2 ActiveRecord进行堆栈溢出异常

Question

与Rails 3.2.1有一个奇怪的问题.使用带有icky列名的遗留数据库,我正在尝试在我的模型中清理它们.以下模型在HTML中工作正常,但使用JSON或XML进行响应会引发stack level too deep错误:

class Order < ActiveRecord::Base
    set_table_name 'ordersum'
    set_primary_key 'ordernbr'

    alias_attribute 'id','ordernbr'
    alias_attribute 'customer_id', 'custid'
    alias_attribute 'shipping_name', 'sname'
    alias_attribute 'shipping_company','scompany'
    alias_attribute 'shipping_address1','saddress1'
    alias_attribute 'shipping_address2','saddress2'
    alias_attribute 'shipping_city','scity'
    alias_attribute 'shipping_state','sstate'
    alias_attribute 'shipping_zip','zip'
    alias_attribute 'shipping_country','scountry'
    alias_attribute 'shipping_phone','sphone'
    alias_attribute 'shipping_method','shipvia'
    alias_attribute 'subtotal','product'
    alias_attribute 'shipping', 'freight'
    alias_attribute 'handling', 'handling'
    alias_attribute 'total', 'ordertot'
    alias_attribute 'transaction_id', 'vsTransactionId'
    alias_attribute 'reference_number', 'vsrefnbr'
    alias_attribute 'approval_code', 'vsappcode'
    alias_attribute 'created_on', 'entereddtm'
end

class OrdersController < ApplicationController
  respond_to :html, :xml, :json

  def index
    @orders = Order.all
    respond_with @orders
  end
end

订单是堆栈级别太深,没有堆栈跟踪.

编辑#1 框架/完整跟踪有1项:

actionpack (3.2.1) lib/action_dispatch/middleware/reloader.rb:70

编辑#2 挖掘后找到一些额外的细节.有一个rails控制台和一个Order.find并得到以下错误.请注意,Order.all工作正常.

C:\Users\Rich\App>rails console
Loading development environment (Rails 3.2.1)
irb(main):001:0> Order.find(1)
  ?[1m?[36mOrder Load (1.0ms)?[0m  ?[1mSELECT `ordersum`.* FROM `ordersum` WHERE `ordersum`.`ordernbr` = 1 LIMIT 1?[0m
SystemStackError: stack level too deep
        from C:/ruby/lib/ruby/1.9.1/logger.rb:443
irb(main):002:0>

Answer 1

你的意思是别名handling吗？

alias_attribute 'handling', 'handling'

这会打击你的筹码.