ruby-on-rails-3 - 上传附件时没有调用回形针，所以附件没有保存。 Rails3 + 上传

Question

我有两个使用回形针的不同应用程序。在不保存附件或调用回形​​针的应用程序上，我在上传应用程序时收到此日志

started POST "/users/1/uploads" for 127.0.0.1 at 2011-04-23 13:38:11 +0100
Processing by UploadsController#create as HTML
Parameters: {"utf8"=>"✓",    "authenticity_token"=>"t2dRIH4FgOPnLRhpDK0x7iIfjB9Xj5rqkJRPCWZvJ14=", "upload"=> {"document"=>#<ActionDispatch::Http::UploadedFile:0x2beeb08 @original_filename="Essay  questions have various requirements.doc", @content_type="application/msword",  @headers="Content-Disposition: form-data; name=\"upload[document]\"; filename=\"Essay  questions have various requirements.doc\"\r\nContent-Type: application/msword\r\n",  @tempfile=#<File:C:/DOCUME~1/Ed/LOCALS~1/Temp/RackMultipart20110423-3980-ycq74p>>},  "commit"=>"Upload", "user_id"=>"1"}
[1m[35mUser Load (0.0ms)[0m  SELECT "users".* FROM "users" WHERE "users"."id" = 1 LIMIT 1
[1m[36mUpload Load (0.0ms)[0m  [1mSELECT "uploads".* FROM "uploads" WHERE  ("uploads".uploadable_id = 1 AND "uploads".uploadable_type = 'User')[0m
Rendered uploads/_uploadify.html.erb (15.6ms)
Rendered uploads/_form.html.erb (31.2ms)
Rendered uploads/new.html.erb within layouts/application (46.9ms)
Completed 200 OK in 500ms (Views: 234.4ms | ActiveRecord: 0.0ms)

在回形针工作正常的应用程序上，我得到了这个日志:

Started POST "/uploads" for 127.0.0.1 at Mon Apr 25 11:35:50 +0100 2011
Processing by UploadsController#create as JSON
Parameters: {"_http_accept"=>"application/javascript", "Filename"=>"angels.txt",    "folder"=>"/users/", "authenticity_token"=>"NVJj3ODIGuoc97wGvjWkez1YoN+SUDVtNJ+k80XdYXM=", "Upload"=>"Submit Query", "user_id"=>"1", "_uploadify_session"=>"BAh7ByIQX2NzcmZfdG9rZW4iMU5WSmozT0RJR3VvYzk3d0d2aldrZXoxWW9OK1NVRFZ0TkorazgwWGRZWE09Ig9zZXNzaW9uX2lkIiU0ZDEyNzZkNzczNzk1MDdiMmQ4NWZmYTY5MDY4YTU0MQ==--7eb8c0ca249e2566998a0e68322a89d731fdb4ad", "Filedata"=>#<ActionDispatch::Http::UploadedFile:0x4958490 @content_type="application/octet-stream", @original_filename="angels.txt", @tempfile=#<File:C:/DOCUME~1/Ed/LOCALS~1/Temp/RackMultipart20110425-4884-vyvdo8-0>, @headers="Content-Disposition: form-data; name=\"Filedata\"; filename=\"angels.txt\"\r\nContent-Type: application/octet-stream\r\n">}
[paperclip] identify -format %wx%h "C:/DOCUME~1/Ed/LOCALS~1 /Temp/stream20110425-4884-15he32x-0.txt[0]" 2>NUL
[paperclip] convert "C:/DOCUME~1/Ed/LOCALS~1/Temp/stream20110425-4884-15he32x-0.txt[0]" -resize "300x300>" "C:/DOCUME~1/Ed/LOCALS~1/Temp/stream20110425-4884-15he32x-020110425-4884-r65fe6-0" 2>NUL
[paperclip] identify -format %wx%h "C:/DOCUME~1/Ed/LOCALS~1/Temp/stream20110425-4884-15he32x-0.txt[0]" 2>NUL
[paperclip] convert "C:/DOCUME~1/Ed/LOCALS~1/Temp/stream20110425-4884-15he32x-0.txt[0]" -resize "100x100>" "C:/DOCUME~1/Ed/LOCALS~1/Temp/stream20110425-4884-15he32x-020110425-4884-1ttxfol-0" 2>NUL
[1m[36mAREL (15.6ms)[0m  [1mINSERT INTO "uploads" ("user_id", "created_at", "photo_file_size", "photo_updated_at", "photo_content_type", "photo_file_name", "updated_at") VALUES (1, '2011-04-25 10:36:10.312500', 867, '2011-04-25 10:35:52.109375', 'text/plain', 'angels.txt', '2011-04-25 10:36:10.312500')[0m
[paperclip] Saving attachments.
[paperclip] saving C:/rails_project1/Uploadify-2/public/system/photos/2/medium/angels.txt
[paperclip] saving C:/rails_project1/Uploadify-2/public/system/photos/2/thumb/angels.txt
[paperclip] saving C:/rails_project1/Uploadify-2/public/system/photos/2/original/angels.txt
Completed 200 OK in 19422ms (Views: 62.5ms | ActiveRecord: 15.6ms)

两者之间的唯一区别是，不工作的是多态模型，多态模型的 Controller 如下:

class UploadsController < ApplicationController
  before_filter :find_parent
  before_filter :prepare_input_params
  #respond_to :html, :json, :js

  def index
     @uploads = Upload.all
 #@uploads = @parent.try(:uploads).try(:all)
 @upload = Upload.new
     #respond_with([@parent, @uploads])
  end

  def new
     @upload = @parent.uploads.new
  end

  def create 
     @upload = @parent.uploads.build(params[:upload])   
   if @upload.save
        flash[:notice] = "sucessfully saved upload"     
    respond_to do |format|
        format.html {redirect_to [@parent, :uploads]}
        format.json {render :json => { :result => 'success', :upload =>  polymorphic_url([@parent,:uploads])  } }
      end   
  else
      render :action => 'new'
      end
 end

 def edit
   @upload = Upload.find(params[:id])   
 end

 def show
   "puts @upload.inspect"
     @upload = @parent.uploads.find(params[:id])
     @total_uploads = @parent.uploads.find(:all, :conditions => { :user_id =>  @upload.user.id})
 end

 def update
   @upload = Upload.find(params[:id])
    if @upload.update_attributes(params[:upload])
     flash[:notice] = "Successfully updated document"
     redirect_to @upload
    else
     render :action => 'edit'
    end
 end

 def destroy
   @upload = Upload.find(params[:id])
   @upload.destroy
   redirect_to([@parent, :upload])
 end 

 private 
 def prepare_input_params
   params[:upload][:document] = params[:Filedata] if params[:Filedata]
 end

结尾

这是带有部分和上传位形式的 gist 文件: https://gist.github.com/940960 .表单有 :html => { :multipart => true }。

谢谢您的帮助。

编辑 :

看来问题出在模型uploads.rb上。当我注释掉以下部分时:一切正常，但我需要能够使用验证并指定路径，因为我想使用 S3。关于如何取消注释代码的任何帮助，而不会再次发生回形针的初始错误。

class Upload < ActiveRecord::Base
 attr_accessible  :document
 belongs_to :uploadable,  :polymorphic => true
 has_attached_file :document, :styles => { :small => "150x150>",:thumb => "100x100>" }
=begin                 
             :url => "/uploads/:id/:style/:basename.:extension",
             :path => ":rails.root/public/:uploads/:id/:style/:basement.:extension"                                  
validates_attachment_presence :document
validates_attachment_size  :document, :less_than => 5.megabytes
validates_attachment_content_type :document, :content_type => ['application/octet-stream','image/jpeg','image/gif', 'image/png', 'image/pdf', 'image/doc', 
                                                             'video/x-m4v', 'video/quicktime','application/x-shockwave-flash', 'audio/mpeg', 'video/mpeg', 'application/pdf','application/msword']

=end

结尾

更新 :

我认为主要问题似乎是为什么附加一个新文件，回形针，以某种方式开始调用 选择“上传”。*'来自“上传”而不是调用 插入“上传” ，即 Controller #创建操作 每当我向回形针 has_attached_file 方法提供 :url 和 :path 选项时，显示得更高似乎正在调用 SELECT。请参阅下面的日志:

Processing by UploadsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"Azxzi09R7NU7+jxj+lxHFGfs+qw7D6b7yRKegRjRQMc=", "upload"=> {"document"=>#<ActionDispatch::Http::UploadedFile:0x2994ff0 @original_filename="al night  verses.txt", @content_type="text/plain", @headers="Content-Disposition: form-data;  name=\"upload[document]\"; filename=\"al night verses.txt\"\r\nContent-Type:  text/plain\r\n", @tempfile=#<File:C:/DOCUME~1/Ed/LOCALS~1 /Temp/RackMultipart20110505-3444-1rlpnr>>}, "commit"=>"Upload", "user_id"=>"1"}
[1m[35mUser Load (0.0ms)[0m  SELECT "users".* FROM "users" WHERE "users"."id" = 1 LIMIT 1
[paperclip] C:\ImageMagick-6.6.3-Q16/identify -format %wx%h "C:/DOCUME~1/Ed/LOCALS~1 /Temp/stream20110505-3444-1cpnf87.txt[0]"
[paperclip] C:\ImageMagick-6.6.3-Q16/convert "C:/DOCUME~1/Ed/LOCALS~1 /Temp/stream20110505-3444-1cpnf87.txt[0]" -resize "150x150>" "C:/DOCUME~1/Ed/LOCALS~1 /Temp/stream20110505-3444-1cpnf8720110505-3444-1vnp5jx"
[paperclip] C:\ImageMagick-6.6.3-Q16/identify -format %wx%h "C:/DOCUME~1/Ed/LOCALS~1 /Temp/stream20110505-3444-1cpnf87.txt[0]"
[paperclip] C:\ImageMagick-6.6.3-Q16/convert "C:/DOCUME~1/Ed/LOCALS~1 /Temp/stream20110505-3444-1cpnf87.txt[0]" -resize "100x100>" "C:/DOCUME~1/Ed/LOCALS~1 /Temp/stream20110505-3444-1cpnf8720110505-3444-1vyk9i"
 [1m[36mUpload Load (0.0ms)[0m  [1mSELECT "uploads".* FROM "uploads" WHERE  ("uploads".uploadable_id = 1 AND "uploads".uploadable_type = 'User')[0m
Rendered uploads/_uploadify.html.erb (15.6ms)
Rendered uploads/_form.html.erb (31.2ms)
Rendered uploads/new.html.erb within layouts/application (62.5ms)

根据@CharlieMezak 的要求，这里是views/uploads/_form.html.erb :

<%= debug @parent %>
<%= render :partial => "uploads/uploadify" %>
</br>
<%= form_for [parent, upload], :html => { :multipart => true } do |f|  %>
<div class="field">
<%= f.label :document %><br />
<%= f.file_field :document %>
</div>

<div class="actions">
<%= f.submit "Upload"%>
</div>

查看/上传/new.html.erb :

<%= render 'form', :parent => @parent, :upload => @upload %>

View /用户/index.html.erb :

<%= render "uploads/form", :parent => user, :upload => user.uploads.new %>

更多更新 :

就像我提到的，当我注释掉 :styles,::url 和 :path 来自回形针的 **'has_many_attachment :document' 的选项，调用 INSERT 语句，虽然它保存文件，而不是显示附件，但它最终在网站上显示几个参数，如真实性 token 等，如下所示:

attributes:
id: 1
email: xyz@yahoo.com
encrypted_password: $2a$10$HiksbkRXDtcXiJyUIRj
password_salt: $2a$10$HiksbkRXD
reset_password_token: !!null 
remember_token: !!null 
remember_created_at: !!null 
sign_in_count: 3
current_sign_in_at: '2011-04-25 18:57:27.078125'
last_sign_in_at: '2011-04-25 09:25:31.406250'
current_sign_in_ip: 127.0.0.1
last_sign_in_ip: 127.0.0.1
created_at: '2011-04-09 17:46:15.546875'
updated_at: '2011-04-25 18:57:27.078125'
changed_attributes: {}
previously_changed: {}
attributes_cache: {}
marked_for_destruction: false
destroyed: false
readonly: false
new_record: false

Answer 1

记得加:multipart => true到您 View 中的表单标签？