Rails.application.routes.url_helpers崩溃Heroku应用程序 [英] Rails.application.routes.url_helpers crashing Heroku app

问题描述

我正在为Collection + Json构建一个序列化程序，并且我正在编写一个API例。在Heroku上部署的应用程序中使用 Rails.application.routes.url_helpers 时遇到问题。

我在一个序列化程序中使用它：

Rails.application.routes.url_helpers.bills_url

在开发中，一切正常。然而，在Heroku上这会产生一个错误：

＃< Module：0x007f3a1eab8d58>未定义方法'bills_url' （NoMethodError）。

如果我转储 Rails.application.routes.url_helpers.methods ，没有 _url 或 _path 方法被列出。但是，他们是如果我在控制台中运行相同的代码：

  heroku run rails c --app myapp 
 > Rails.application.routes.url_helpers.methods 
> ＃=> ：bills_url存在
  

这很奇怪。任何线索？ Heroku是否使 url_helpers 不可用？我绝对失去了。我搜索了很多，但没有发现任何东西。

以下是 bug报告为完整跟踪。

谢谢。

解决方案

我遇到了同样的问题，发现是由于以下两个原因造成的：

首先，使用Rails.application.routes.url_helpers类常量中的方法，如下面的代码片段所示：

  class myObject 
包含ActiveModel :: Model 
 
 attr_accessor：id，：link 
 
 DEFAULT_OBJECT = new id：1，
 link：Rails.application.routes.url_helpers.my_object_url（{：id => 1}）
 
 ... 
 end 
  

其次，设置<$ c

所以结果是，当 config.eager_load = config.eager_load = true 真正的，动态网址助手并不是regi在加载myObject类时加密。

这篇文章可能有用 - > http://blog.arkency.com/2014/11/dont-forget-about-eager-load-when-extending-autoload /

I'm building a Serializer for Collection+Json, and I'm writing an API as an example. I'm having an issue when using Rails.application.routes.url_helpers on the deployed app on Heroku.

I use this in one serializer:

Rails.application.routes.url_helpers.bills_url

In development, everything works fine. However, on Heroku this raises an error:

undefined method 'bills_url' for #<Module:0x007f3a1eab8d58> (NoMethodError).

If I dump Rails.application.routes.url_helpers.methods, no _url or _path methods are listed. However, they are if I run the same code in the console:

heroku run rails c --app myapp
> Rails.application.routes.url_helpers.methods
> # => :bills_url is present

This is weird. Any clue on this? Does Heroku make url_helpers not available? I am absolutely lost. I've googled a lot but found nothing.

Here's the bug report for the complete trace.

Thank you.

解决方案

I had this same problem and found that is was caused due to 2 reasons:

First, using the Rails.application.routes.url_helpers methods in class constants like in the following snippet:

class myObject
  include ActiveModel::Model

  attr_accessor :id, :link

  DEFAULT_OBJECT = new id: 1, 
                     link: Rails.application.routes.url_helpers.my_object_url({:id => 1})

   ...
end

Second, setting config.eager_load = true in the environment file.

So result being, when config.eager_load = true, the dynamic url helpers haven't been registered when the myObject class is loaded.

This article maybe useful -> http://blog.arkency.com/2014/11/dont-forget-about-eager-load-when-extending-autoload/

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