CarrierWaveDirect没有处理CarrierWaveDirect

2023-09-11 10:06:52 作者：花淡纱窗残月明

我有一个包含PDF文件的文档模型。因为我并不需要操纵PDF文件以任何方式，我尝试使用CarrierWaveDirect没有它的处理步骤，我相信这是下载和重新上传文件。

I have a document model that consists of PDF files. Because I don't need to manipulate the PDFs in any way, I'm attempting to use CarrierWaveDirect without its processing step, which I believe is downloading and re-uploading the files.

我的上传者是这样的：

class DocumentUploader < CarrierWave::Uploader::Base
  include CarrierWave::RMagick
  include CarrierWave::MimeTypes
  include CarrierWaveDirect::Uploader

  def will_include_content_type
    true
  end

  default_content_type  'application/pdf'
  allowed_content_types = %w(application/pdf)

  def store_dir
    prefix = Rails.env.production? ? '' : 'tmp/'
    "#{prefix}files/documents"
  end

  def extension_white_list
    %w(pdf)
  end
end

我定义文档（控制器）为：

I define the document (in the controller) as:

@document = Document.new.filename
@document.success_action_redirect = new_document_url(:step => 2)

我使用的是直接上传表单上传的文件本身，这是工作的罚款。

I'm using the direct upload form to upload the file itself, which is working fine.

<%= direct_upload_form_for @document do |f| %>
  <%= f.file_field :filename, :required => true %>
  <%= f.submit "Upload Document" %>
<% end %>

当我拿到钥匙后，我创建 filename_key 称为属性，并在我的模型回调查找此属性来更新列。

When I get the key back, I create an attribute called filename_key, and a callback in my model looks for this attribute to update the column.

控制器：

key = params[:key].split('/').last(2).join('/')
@document = Document.new(:filename_key => key)

型号：

after_save :check_for_file

def check_for_file
  unless self.filename_key.blank?
    update_columns(:filename => self.filename_key.to_s) 
  end
end

这其实一切工作正常。问题是，当我去的保存记录再次的，我得到这个错误：

This actually all works fine. The problem is when I go to save the record again, I get this error:

ActiveRecord::StatementInvalid: Mysql2::Error: Data too long for column 'filename' at row 1: UPDATE `documents` SET `filename` = '--- &1 !ruby/object:DocumentUploader\nmodel: !ruby/object:Document\n  attributes:\n    id: 92\n ...

它试图设置属性作为属性本身的全部内容。我的第一个猜测是，我绕过重要的 after_create 或 after_save的回调，但我不能得到保存文件不处理，除非我避免这些回调。

It's trying to set the entire contents of the attribute as the attribute itself. My first guess is that I am bypassing vital after_create or after_save callbacks, but I can't get to saving a file without processing unless I avoid these callbacks.

在哪里看接下来的任何建议都AP preciated提前！

Any suggestions of where to look next are appreciated in advance!

CarrierWaveDirect没有处理CarrierWaveDirect

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