如何从Carrierwave Uploader对象引用父模型 [英] How to reference parent model from Carrierwave Uploader object

问题描述

我想通过Carrierwave完成文件上传后运行一些方法。 Carrierwave包括多个回调方法，详细的此处。

我打算使用：store回调。

这很好，但它需要我运行Uploader对象实例中的回调方法。这不是世界末日，但我想保留我父母模型的所有逻辑。

我的问题是：我应该如何从Uploader引用父模型？我在文档中没有看到任何明显的东西

我想我可以做一些像

  ParentModel.last.call_my_method_here 
  

但这看起来像是一个非常脆弱的方式来编码（不期待很多请求，但仍然）。

解决方案

我想 model 变量就是你要找的，查看使用它的示例此处

I want to run some methods after the upload of a file has been completed via Carrierwave. Carrierwave includes several callback methods detailed here.

I'm planning on using the :store callback.

That's great, but it requires me to run the callback method in the Uploader object instance. This isn't the end of the world, but I want to keep all the logic inside of my parent Model.

My question is: How should I be referencing the parent model from the Uploader? I don't see anything obvious in the documentation?

I suppose I could do something like

ParentModel.last.call_my_method_here

but this seems like a very brittle way to code this (not expecting a lot of requests, but still).

解决方案

I guess the model variable is what you were looking for, see examples using it here

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