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copied!<p>try it, add lib/qq_file.rb:</p> <pre><code># encoding: utf-8 require 'digest/sha1' require 'mime/types' # Usage (paperclip example) # @asset.data = QqFile.new(params[:qqfile], request) class QqFile < ::Tempfile def initialize(filename, request, tmpdir = Dir::tmpdir) @original_filename = filename @request = request super Digest::SHA1.hexdigest(filename), tmpdir fetch end def self.parse(*args) return args.first unless args.first.is_a?(String) new(*args) end def fetch self.write @request.raw_post self.rewind self end def original_filename @original_filename end def content_type types = MIME::Types.type_for(@request.content_type) types.empty? ? @request.content_type : types.first.to_s end end </code></pre> <p>in assets_controller type this:</p> <pre><code>def create @asset ||= Asset.new(params[:asset]) @asset.assetable_type = params[:assetable_type] @asset.assetable_id = params[:assetable_id] || 0 @asset.guid = params[:guid] @asset.data = QqFile.parse(params[:qqfile], request) @asset.user_id = 0 @success = @asset.save respond_with(@asset) do |format| format.html { render :text => "{'success':#{@success}}" } format.xml { render :xml => @asset.to_xml } format.js { render :text => "{'success':#{@success}}"} format.json { render :json => {:success => @success} } end end </code></pre> <p>javascript:</p> <pre><code>var photo_uploader = new qq.FileUploader({ element: document.getElementById('photo-button'), multiple: true, action: '/assets', allowedExtensions: ['png', 'gif', 'jpg', 'jpeg'], sizeLimit: 2097152, params: {guid: $('#idea_guid').val(), assetable_type: 'Idea', klass: 'Picture', collection: true} }); </code></pre>

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