没有activerecord的文件上传 [英] file upload without activerecord

问题描述

如何在不将文件附加到活动记录的情况下处理 rail 中的文件上传?
我只想将文件写入磁盘.

How do you handle file upload in rail without attaching them to active record ?
I just want to write the files to the disk.

谢谢，

推荐答案

如果我正确理解你需要什么，那么最简单的例子是:

If I understand correctly what you need then the most simple example would be this:

控制器:

  class UploadController < ApplicationController
  def new

  end

  def create
    name = params[:upload][:file].original_filename
    path = File.join("public", "images", "upload", name)
    File.open(path, "wb") { |f| f.write(params[:upload][:file].read) }
    flash[:notice] = "File uploaded"
    redirect_to "/upload/new"
  end
end

视图:

<% flash.each do |key, msg| %>
    <%= content_tag :div, msg, :class => [key, " message"], :id => "notice_#{key}" %>
<% end %>
<% form_tag '/upload/create', { :multipart => true } do %>
    <p>
    <%= file_field_tag 'upload[file]' %>
    </p>
    <p>
        <%= submit_tag "Upload" %>
    </p>
<% end %>

这将使您无需任何检查或验证即可上传任何文件，我认为这没有那么有用.

This would let you upload any file without any checks or validations which in my opinion isn't that usefull.

如果我自己做，那么我会使用类似 validatable gem 或 tableless gem 不再支持 tableless.这些 gem 可让您验证上传的内容，使其更加合理.

If I would do it myself then I would use something like validatable gem or tableless gem just tableless is not supported anymore. These gems would allow you to validate what you're uploading to make it more sane.

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