ActiveRecord的:: UnknownAttributeError？ [英] ActiveRecord::UnknownAttributeError?

问题描述

基本上有一个 Bus 模型，它只是一个应用程序。具有座位属性

  class Bus< ActiveRecord :: Base 
 attr_accessible：seats，＃其他属性
结束
  

现在我有一个JavaScript前端，POST的JSON用于新总线到总线＃创建动作。

ActiveRecord不断遇到当我尝试创建总线时出错：

 ：POST www.busables.com/buses dyno = web.1 queue = 0 wait = 5ms service = 65ms status = 500 bytes = 728 
：
：ActiveRecord :: UnknownAttributeError（未知属性：座位）：
：app / controllers / buses_controller.rb：31：新'
：app / controllers / buses_controller.rb：31：在`create'
  

这些参数正好达到控制器的动作。我可以登录他们，并得到以下信息：

 收到的总线参数：{seats=>24， departure_time（1i）=>2011，departure_time（2i）=>11，departure_time（3i）=>25，departure_time（4i）=>16 ，departure_time（5i）=>15，route_attributes=> {summary=>N51，beginning_address=>一个地方terminal_address=>另一个地方，距离=> 26362，持续时间=> 1753}} 
  

我检查了 Bus 表中实际上有位置列，它确实（我在Heroku控制台中运行了这个）：

 > Bus.column_names 
 => [id，name，route_id，created_at，updated_at，price，departure_time，trip_distance，trip_duration，seats] 
  

当然，我尝试迁移并加载数据库模式。我已检查 attr_accessible：seats 是否也设置正确。

还有其他想法吗？

我在Heroku Cedar堆栈上运行Rails 3.1.1。一切正常，我的本地机器。

解决方案

这是陈词滥调，但我早上再次尝试，它完美的作品！我怀疑这可能是某种传播问题。

I just pushed an app to a production Heroku environment.

Basically there is a Bus model and it has a seats attribute

class Bus < ActiveRecord::Base
  attr_accessible :seats, # other attributes
end

Now I have a JavaScript frontend which POST's JSON for new buses to the buses#create action.

ActiveRecord keeps encountering an error when I try to create a bus:

: POST www.busables.com/buses dyno=web.1 queue=0 wait=5ms service=65ms status=500 bytes=728
: 
: ActiveRecord::UnknownAttributeError (unknown attribute: seats):
:   app/controllers/buses_controller.rb:31:in `new'
:   app/controllers/buses_controller.rb:31:in `create'

The parameters are reaching the controller action fine. I can log them and I get the folowing:

The bus parameters received: {"seats"=>"24", "departure_time(1i)"=>"2011", "departure_time(2i)"=>"11", "departure_time(3i)"=>"25", "departure_time(4i)"=>"16", "departure_time(5i)"=>"15", "route_attributes"=>{"summary"=>"N51", "beginning_address"=>"A place", "terminal_address"=>"Another place", "distance"=>26362, "duration"=>1753}}

I checked that the Bus table actually has the seats column and it does (I ran this in the Heroku console):

> Bus.column_names
=> ["id", "name", "route_id", "created_at", "updated_at", "price", "departure_time", "trip_distance", "trip_duration", "seats"]

And of course I've tried migrating and loading the database schema. I've checked that the attr_accessible :seats is set correctly also.

Any other ideas?

I'm running Rails 3.1.1 on the Heroku Cedar stack. Everything works fine on my local machine.

解决方案

It's cliché but I tried again in the morning and it works perfectly! I suspect it might have been a propagation issue of some sort.

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