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中，我上载应用程序时会收到此日志
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)
在回形针可以正常工作的应用程序上，我收到此日志:
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，一个不起作用的是多态模型，该多态模型的 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gist文件，格式为partial和uploadify位:https://gist.github.com/940960。表单具有:html => {:multipart => true}。
谢谢您的帮助。
编辑:
看来问题出在模型uploads.rb。当我注释掉以下部分时:一切正常，但是我需要能够使用验证并指定路径，因为我想使用S3。关于如何我可以取消注释而没有回形针的初始错误的任何帮助都不会再次发生。
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在于，为什么附加一个新文件，回形针，以某种方式开始从“uploads” 调用 SELECT“uploads”。每当我向回形针has_attached_file方法提供:url和:path选项时，显示在较高位置的 Action 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)
基于@CharlieMezak的请求，这是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>
views/uploads/new.html.erb :
<%= render 'form', :parent => @parent, :upload => @upload %>
views/users/index.html.erb :
<%= render "uploads/form", :parent => user, :upload => user.uploads.new %>
更多更新:
就像我提到的那样，当我从回形针的**'has_many_attachment:document'中注释掉:styles 、::url和:path 选项时，将调用INSERT语句，尽管它会保存文件，而不是显示附件，它最终在网站上显示几个参数，例如真实性 token 等，如下所示:
attributes:
id: 1
email: [email protected]
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
最佳答案
您还记得在 View 中将:multipart => true添加到form标记吗？