Question

我使用宝石CarrierWave上传了多个文件，我可以上传成功，但我无法下载并显示每个文件的地址。

我尝试使用控制台显示上传文件的数组，我得到了这个：

2.2.4 :013 > Legislation.find(14).documents.each do |doc|
2.2.4 :014 >     puts doc
2.2.4 :015?>   end
  Legislation Load (0.4ms)  SELECT  "legislations".* FROM "legislations" WHERE "legislations"."id" = ? LIMIT 1  [["id", 14]]
/uploads/legislation/documents/14/%5B%2267490.jpg%22%2C%20%2214536943_1300076803359446_1963523476_o.jpg%22%2C%20%221436764358456.jpg%22%2C%20%22ch_09b.ppt%22%5D
 => [#<DocumentUploader:0x007fc5c7b6bcc0 @model=#<Legislation id: 14, title: "ascsf", created_at: "2016-11-02 08:51:39", updated_at: "2016-11-02 08:51:39", attachment: nil, documents: "[\"67490.jpg\", \"14536943_1300076803359446_196352347...">, @mounted_as=:documents, @storage=#<CarrierWave::Storage::File:0x007fc5c7b6bbf8 @uploader=#<DocumentUploader:0x007fc5c7b6bcc0 ...>>, @file=#<CarrierWave::SanitizedFile:0x007fc5c7b6b2e8 @file="/Users/ChamperWu/projects/nsysu_mem/public/uploads/legislation/documents/14/[\"67490.jpg\", \"14536943_1300076803359446_1963523476_o.jpg\", \"1436764358456.jpg\", \"ch_09b.ppt\"]", @original_filename=nil, @content_type=nil>, @versions={}>]

当我上传一个文件时，文件地址错误，文件名将为

％5B％2267490.jpg％22％2C％20％

不是真名

67490.jpg

控制器：

def legislation_params
    params.require(:legislation).permit(:title, :attachment, {documents: []})
end

型号：

class Legislation < ActiveRecord::Base
    mount_uploader :attachment, AttachmentUploader
    mount_uploaders :documents, DocumentUploader
    validates :title, presence: true
end

迁移：

class AddDocmentToLegislations < ActiveRecord::Migration
  def change
    add_column :legislations, :documents, :string, array: true, default: []
  end
end

我该如何解决？

Answer 1

我在官方问题here中找到了同样的问题，我解决了问题

只需将serialize :documents添加到模型中，所有问题都将消失

Answer 2

这取决于您的数据库格式：

如果您的数据库没有ActiveRecord（例如SQLite），则必须添加：

mount_uploaders :documents, DocumentUploader    
serialize :docuements, JSON # If you use SQLite, add this line.

如果你有一个ActiveRecord数据库（例如PostgreSQL，MySQL），你只需要添加：

mount_uploaders :documents, AvatarUploader

如何显示由CarrierWave上传的多个文件数组？

2 个答案: