使用Carrierwave将原始文件上传到Rails [英] Uploading a raw file to Rails using Carrierwave

问题描述

我的客户正在尝试从Blackberry和Android手机上传图片。他们不喜欢发布a）表单参数或b）多部分消息。他们想做的是仅用文件中的数据对URL进行POST。

My clients are trying to upload an image from Blackberry and Android phones. They don't like posting a)form parameters or b) multipart messages. What they would like to do is do a POST to a url with only the data from the file.

类似的事情可以在curl中完成：
curl -d @ google.png http：//server/postcards/1/photo.json -X POST

Something like this can be done in curl: curl -d @google.png http://server/postcards/1/photo.json -X POST

我希望将上传的照片放入明信片模型的照片属性中，并放入正确的目录中。

I'd like the uploaded photo to put into the photo attribute of the postcards model and into the right directory.

我正在控制器中执行类似操作，但是图像在目录中已损坏。我现在正在将文件手动重命名为 png：

I'm doing something like this in the controller but the image is corrupted in the directory. I am doing a manual renaming of the file to a "png" for now:

def PostcardsController < ApplicationController
...
# Other RESTful methods
...
def photo
  @postcard = Postcard.find(params[:id])
  @postcard.photo = request.body
  @postcard.save
end

模型：

class Postcard < ActiveRecord::Base
  mount_uploader :photo, PhotoUploader
end

推荐答案

可以这样做，但是您仍然需要客户端发送原始文件名（如果对类型进行任何验证，则还要发送内容类型）。

This can be done but you will still need your clients to send the orignal filename (and the content-type if you do any validation on the type).

def photo
  tempfile = Tempfile.new("photoupload")
  tempfile.binmode
  tempfile << request.body.read
  tempfile.rewind

  photo_params = params.slice(:filename, :type, :head).merge(:tempfile => tempfile)
  photo = ActionDispatch::Http::UploadedFile.new(photo_params)

  @postcard = Postcard.find(params[:id])
  @postcard.photo = photo

  respond_to do |format|
    if @postcard.save
      format.json { head :ok }
    else
      format.json { render :json => @postcard.errors, :status => :unprocessable_entity }
    end
  end
end

可以使用

curl http://server/postcards/1/photo.json?filename=foo.png --data-binary @foo.png

并使用& type = image / png 。

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