Rails 3 Carrierwave 如何删除模型属性文件？

发布于 2024-12-28 17:11:01 字数 610 浏览 2 评论 0原文

我关注了 Railcast #253 http://railscasts.com/episodes/253-rierwave-file -上传并且效果很好。但后来我用 ActiveAdmin 和 Formtastic 实现了它（ActiveAdmin 使用 Formtastic 作为表单）。

所以我可以上传文件和下载文件。

问题是，当链接到删除链接时，Carrierwave 似乎需要一个模型而不是模型的属性。

我有模型 Shipment，它具有 hbl_pdf 属性（PDF 文档）。这是我的删除链接...

row("HBL") { link_to 'remove', shipment.hbl_pdf, :confirm => "Are you sure?", :method => :delete }

我收到错误... PdfUploader:Class 的未定义方法 model_name

我不想删除货件，只想删除文档。

原文

I followed the Railcast #253 http://railscasts.com/episodes/253-carrierwave-file-uploads and works great. But then I implemented it with ActiveAdmin and therefore Formtastic (ActiveAdmin uses Formtastic for the forms).

So I'm able to upload files and download files.

Problem is, it seems that Carrierwave expects a model instead of an attribute of the model when linking to remove links.

I have model Shipment, which has hbl_pdf attribute (a PDF document). This is my delete link...

row("HBL") { link_to 'remove', shipment.hbl_pdf, :confirm => "Are you sure?", :method => :delete }

I get error... undefined method model_name for PdfUploader:Class

I don't want to delete the shipment, only the document.

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余厌 2025-01-04 17:11:01

为什么不对货件对象调用 remove_hbl_pdf! 呢？阅读以下内容的“删除上传的文件”部分：https://github.com/jnicklas/rierwave#readme< /a>

link_to 'remove', remove_shipment_pdf_path(shipment), :confirm => "Are you sure?", :method => :delete

并在您的控制器中

def remove_shipment_pdf
  shipment = Shipment.find_by_id(params[:shipment_id])
  shipment.remove_hbl_pdf! if shipment
  # respond with something or redirect
end

删除命令的语法基于您的属性名称。因此，如果您的模型属性名称是 .hbl_pdf 那么它就是 remove_hbl_pdf!，如果它是 .image 那么它就是 remove_image!

Why aren't you calling remove_hbl_pdf! on the shipment object instead? Read the "Removing uploaded files" section of this: https://github.com/jnicklas/carrierwave#readme

link_to 'remove', remove_shipment_pdf_path(shipment), :confirm => "Are you sure?", :method => :delete

and in your controller

def remove_shipment_pdf
  shipment = Shipment.find_by_id(params[:shipment_id])
  shipment.remove_hbl_pdf! if shipment
  # respond with something or redirect
end

The syntax for the remove command is based on the name of your attribute. So if your model attribute name is .hbl_pdf then it is remove_hbl_pdf! and if it was .image then it would be remove_image!

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