video tutorial - Page 361

Uploading images from Flex to Rails using Paperclip

- by 23tux

Hi everyone, I'm looking for a way to upload images that were created in my flex app to rails. I've tried to use paperclip, but it don't seem to work. I've got this tutorial here: http://blog.alexonrails.net/?p=218 The problem is, that they are using a FileReference to browse for files on the clients computer. They call the .upload(...) function and send the data to the upload controller. But I'm using a URLLoader to upload a image, that is modified in my Flex-App. First, here is the code from the tutorial: private function selectHandler(event:Event):void { var vars:URLVariables = new URLVariables(); var request:URLRequest = new URLRequest(uri); request.method = URLRequestMethod.POST; vars.description = "My Description"; request.data = vars; var uploadDataFieldName:String = 'filemanager[file]'; fileReference.upload(request, uploadDataFieldName); } I don't know how to set that var uploadDataFieldName:String = 'filemanager[file]'; in a URLLoader. I've got the image data compressed as a JPEG in a ByteArray. It looks like this: public function savePicture():void { var filename:String = "blubblub.jpg"; var vars:URLVariables = new URLVariables(); vars.position = layoutView.currentPicPosition; vars.url = filename; vars.user_id = 1; vars.comic_id = 1; vars.file_content_type = "image/jpeg"; vars.file_file_name = filename; var rawBytes:ByteArray = new JPGEncoder(75).encode(bitmapdata); vars.picture = rawBytes; var request:URLRequest = new URLRequest(Data.SERVER_ADDR + "pictures/upload"); request.method = URLRequestMethod.POST; request.data = vars; var loader:URLLoader = new URLLoader(request); loader.addEventListener(Event.COMPLETE, savePictureHandler); loader.addEventListener(IOErrorEvent.IO_ERROR, errorHandlerUpload); loader.load(request); } If I set the var.picture URLVariable to the bytearray, then I get the error, that the upload is nil. Here is the Rails part: Picture-Model: require 'paperclip' class Picture < ActiveRecord::Base # relations from picture belongs_to :comic belongs_to :user has_many :picture_bubbles has_many :bubbles, :through => :picture_bubbles # attached file for picture upload -> with paperclip plugin has_attached_file :file, :path => "public/system/pictures/:basename.:extension" end and the picture controller with the upload function: class PicturesController < ApplicationController protect_from_forgery :except => :upload def upload @picture = Picture.new(params[:picture]) @picture.position = params[:position] @picture.comic_id = params[:comic_id] @picture.url = params[:url] @picture.user_id = params[:user_id] if @picture.save render(:nothing => true, :status => 200) else render(:nothing => true, :status => 500) end end end Does anyone know how to solve this problem? thx, tux

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