Curl请求将图像从本地机器上传到ruby on rails应用程序 [英] Curl request to upload image from local machine to ruby on rails application

问题描述

我有一个应用程序内置在ruby在rails。我需要发布curl请求该应用程序从本地机器上传图像。在我的ruby在rails应用程序我使用回形针图像上传。

现在这个curl请求工作完全正常，因为没有上传图像此卷曲请求： p>

  curl -v -HAccept：application / json-HContent-type：application / json-X PUT -d '{user：{first_name：John，last_name：Smith}，token：api} http：// localhost：3000 / users / 8 
  

现在我要从我的localmachine上传图片。

display_photo：@ test.jpg is not work：这是我正在尝试:( 但它不工作。）

  curl -v -H -FAccept：application / json-HContent-type：application / json-X PUT -d'{user：{first_name：firstname ，last_name：lastname，display_photo：@ test.jpg}，token：api}'http：// localhost：3000 / users / 8 
  
 
 
 
所以问题是如何从curl请求上传图片/数据文件/视频
 
 
 
  EDIT   
 
 
 
这是我的控制器：
  def update 
 @user = User.find（params [：id]）
 
 respond_to do | format | 
 if @ user.update_attributes（params [：user]）
 format.html {redirect_to（@user，：notice =>'User was successfully updated。'）} 
 format.json {render：file => users / json / show.json.erb，：content_type => 'application / json'} 
 else 
 format.html {render：action => edit} 
 format.json {
 @errors_object = @user 
 render：file => shared / json / errors.json.erb，：content_type => 'application / json'} 
 end 
 end 
 end 
  
在我的模型中：
  class User< ActiveRecord :: Base 
 has_attached_file：display_photo，：styles => {：medium => 200x200＃，：thumb => 100x100＃，：very_small =>24x24＃} 
 end 
  
 
 
解决方案
您通常会上传这样的文件：
  curl -i -F filedata = @ upload.txt http：// localhost：5000 / 
  
这样做模仿了一个webbrowsers文件上传。
 
 
 
如果你看到rails响应这个，它通过 application / octet-stream发送可以作为上传的文件正确处理。只要我知道不可能这样做与一个json请求：
 启动POST/为127.0.0.1在2012-07-10 09:40:59 +0200 
 HomeController＃index as * / * 
处理参数：{filedata=>＃< ActionDispatch :: Http :: UploadedFile：0x007f82d59a3580 @ original_filename =upload.txt，@ content_type =application / octet-stream，@ headers =Content-Disposition：form-data; name = \filedata\; filename = \upload.txt \\r\\\
Content-Type：application / octet-stream\r\\\
，@tempfile =＃< File：/ var / folders / f_ / wjnrg7cd3d9f1tpy3k5fhrwm0000gn / T / RackMultipart20120710-30471-1t9abns> >} 
  
 
I have an application built in ruby on rails. I need to post curl request to that application to upload images from local machine. In my ruby on rails application I am using paperclip for image uploader.

Now this curl request is working perfectly fine as there is no upload image for this curl request:
  curl -v -H   "Accept: application/json" -H "Content-type: application/json" -X PUT -d '{"user":{"first_name":"John","last_name":"Smith"},"token":"api"}'  http://localhost:3000/users/8
Now I want to upload an image from my localmachine.

Adding "display_photo":@test.jpg is not working: This is what I was trying: (But its not working.)
  curl -v -H  -F "Accept: application/json" -H "Content-type: application/json" -X PUT -d '{"user":{"first_name":"firstname","last_name":"lastname","display_photo":@test.jpg},"token":"api"}'  http://localhost:3000/users/8
So the question is how to upload images/data files/ videos from curl request

EDIT

This is my controller:
   def update
    @user = User.find(params[:id])

    respond_to do |format|
      if @user.update_attributes(params[:user])
        format.html {  redirect_to(@user, :notice => 'User was successfully updated.') }
        format.json  { render :file => "users/json/show.json.erb", :content_type => 'application/json' }
      else
        format.html { render :action => "edit" }
        format.json  { 
          @errors_object = @user
          render :file => "shared/json/errors.json.erb", :content_type => 'application/json' }
      end
    end
  end
In my model:
class User < ActiveRecord::Base
    has_attached_file :display_photo, :styles => { :medium => "200x200#", :thumb => "100x100#", :very_small=>"24x24#" }
end

解决方案
you would normally upload a file like this:
curl -i -F filedata=@upload.txt http://localhost:5000/
doing so mimics the behavior that you would have through a webbrowsers file upload.

if you look at the rails response for this, it's sent via application/octet-stream that can be handled properly as an uploaded file. as far as i know it's not possible to do this with a json request:
Started POST "/" for 127.0.0.1 at 2012-07-10 09:40:59 +0200
Processing by HomeController#index as */*
  Parameters: {"filedata"=>#<ActionDispatch::Http::UploadedFile:0x007f82d59a3580 @original_filename="upload.txt", @content_type="application/octet-stream", @headers="Content-Disposition: form-data; name=\"filedata\"; filename=\"upload.txt\"\r\nContent-Type: application/octet-stream\r\n", @tempfile=#<File:/var/folders/f_/wjnrg7cd3d9f1tpy3k5fhrwm0000gn/T/RackMultipart20120710-30471-1t9abns>>}


                        
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