步骤1

将宝石’carrier_wave’添加到您的Gemfile.

第2步

将此代码保存到/lib/flash_session_cookie_middleware.rb中：

require 'rack/utils'

class FlashSessionCookieMiddleware
  def initialize app,session_key = '_session_id'
    @app = app
    @session_key = session_key
  end

  def call env
    if env['HTTP_USER_AGENT'] =~ /^(Adobe|Shockwave) Flash/
      request = Rack::Request.new env
      env['HTTP_COOKIE'] = [@session_key,request.params[@session_key]].join('=').freeze unless request.params[@session_key].nil?
      env['HTTP_ACCEPT'] = "#{request.params['_http_accept']}".freeze unless request.params['_http_accept'].nil?
    end

    @app.call env
  end
end

步骤3

编辑session_store.rb并将此代码添加到文件的末尾：

Rails.application.config.middleware.insert_before(
  ActionDispatch::Session::CookieStore,FlashSessionCookieMiddleware,Rails.application.config.session_options[:key]
)

步骤4

下载Uploadify并解压缩.

步骤5

>将jquery.uploadify.v2.1.4.min.js和swfobject.js复制到
/ app / assets / javascripts如果您使用Rails 3.1或更高版本;至
/ public / javascripts,如果您使用Rails 3.0或更早版本.
将uploadify.swf和cancel.png复制到/ app / assets / images /或
/大众/图像.
>将uploadify.css复制到/ app / assets / stylesheets /或
/公共/样式表.

步骤6

编辑你的application.js并插入下面：

//= require swfobject
//= require jquery.uploadify

步骤7

在您上传的页面中,添加：

<input id="uploadify" name="uploadify" type="file"/>

步骤8

将此代码添加到您上传脚本：

$(document).ready(function() {
  <% key = Rails.application.config.session_options[:key] %>
  var uploadify_script_data = {};
  var csrf_param = $('Meta[name=csrf-param]').attr('content');
  var csrf_token = $('Meta[name=csrf-token]').attr('content');
  uploadify_script_data[csrf_param] = encodeURI(encodeURIComponent(csrf_token));
  uploadify_script_data['<%= key %>'] = '<%= cookies[key] %>';

  $('#uploadify').uploadify({
    uploader        : '/assets/uploadify.swf',script          : '/photos',cancelImg       : '/images/cancel.png',auto            : true,multi           : true,removeCompleted     : true,scriptData      : uploadify_script_data,onComplete      : function(event,ID,fileObj,doc,data) {
    }
  });
});

步骤9

写下你的控制器：

def create
  @photo = Photo.new image: params[:file_data]
  @photo.save
end

注意：已通过Uploadify 2.1.4进行了测试.