ruby-on-rails-3 – 在Rails 3应用程序中解析JSON HTTP帖子？

我有一个基本的活动控制器和模型,控制器如下：

class ActivitiesController < ApplicationController
  # GET /activities
  # GET /activities.json
  def index
    @activities = Activity.order('created_at DESC').limit(10)

    respond_to do |format|
      format.html # index.html.erb
      format.json { render json: @activities }
    end
  end

  # GET /activities/1
  # GET /activities/1.json
  def show
    @activity = Activity.find(params[:id])

    respond_to do |format|
      format.html # show.html.erb
      format.json { render json: @activity }
    end
  end

  # GET /activities/new
  # GET /activities/new.json
  def new
    @activity = Activity.new

    respond_to do |format|
      format.html # new.html.erb
      format.json { render json: @activity }
    end
  end

  # GET /activities/1/edit
  def edit
    @activity = Activity.find(params[:id])
  end

  # POST /activities
  # POST /activities.json
  def create
    @activity = Activity.new(params[:activity])

    respond_to do |format|
      if @activity.save
        format.html { redirect_to @activity,notice: 'Activity was successfully created.' }
        format.json { render json: @activity,status: :created,location: @activity }
      else
        format.html { render action: "new" }
        format.json { render json: @activity.errors,status: :unprocessable_entity }
      end
    end
  end

  # PUT /activities/1
  # PUT /activities/1.json
  def update
    @activity = Activity.find(params[:id])

    respond_to do |format|
      if @activity.update_attributes(params[:activity])
        format.html { redirect_to @activity,notice: 'Activity was successfully updated.' }
        format.json { head :no_content }
      else
        format.html { render action: "edit" }
        format.json { render json: @activity.errors,status: :unprocessable_entity }
      end
    end
  end

  # DELETE /activities/1
  # DELETE /activities/1.json
  def destroy
    @activity = Activity.find(params[:id])
    @activity.destroy

    respond_to do |format|
      format.html { redirect_to activities_url }
      format.json { head :no_content }
    end
  end
end

我还从应用程序获得了一个示例JSON有效负载,我正在尝试从以下位置接收POST：

payload {"files":{"changed":[],"removed":[".gitmodules","extensions","extensions/markdown"]},"project":{"permalink":"dans-stuff-2","public_key":"ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCuB80S+kMN1266LvCEXoU5hmjugcuXko61Hl7uD9VVgMgEOrLSkeYktOPshgCOwjQgGhSMVEHWrSuOddOi+V3rOu3v91jiU3vycRM3nK9GMaOFf+tTn0/4ReUvGOFHeir1vluHCmOAmpqsVhGWkCJY6eJE37muvGdTG4nW/VnpWYCTLfSOeaq5MVx5LU+zYLntvB5PXd7h1k5ROO8lW+5QzGVyHHEvilzJOqESIAWpNtcXGBt7clWpFH4lg2AT7JebYFuHl8Sl4LYzIRegcpg718CWJjrck9/xV6CBTGP520ifU6K0x4JOn/qFzVlqwnxmrPXwawptmCiYiJt3X8Oz DeployHQ.com Key for dans-stuff-2","name":"Dans Stuff","repository":{"port":null,"username":null,"branch":"master","url":"git@codebasehq.com:atech/deploytest/test1.git","scm_type":"git","cached":true,"hosting_service":{"name":"Codebase","url":"http://www.codebasehq.com","commits_url":"http://atech.codebasehq.com/projects/deploytest/repositories/test1/commits/master","tree_url":"http://atech.codebasehq.com/projects/deploytest/repositories/test1/tree/master"}}},"server":{"name":"cybele","server_path":"/home/dan/deploytest","port":22,"username":"dan","use_ssh_keys":true,"last_revision":"2ad223b9dd6d006d69909407ac7df322e35b009b","hostname":"cybele.phoenixdev.co.uk","identifier":"de99437e-da4a-0986-a7ab-e55805261a96","protocol_type":"ssh"},"start_revision":{"timestamp":"2011-11-30T13:48:22+00:00","author":"Dan Wentworth","ref":"a1c1073b85d1662c075d77f5d88be3fd291abd12","message":"nested markdown pathg","email":"dan@atechmedia.com"},"identifier":"9d0f9c21-f242-3966-fcd3-e821a65acd45","end_revision":{"timestamp":"2011-08-30T16:41:32+01:00","ref":"2ad223b9dd6d006d69909407ac7df322e35b009b","message":"arses","configuration":{"email_notify":true,"notification_addresses":"dan@atechmedia.com","copy_config_files":true},"timestamps":{"completed_at":"2012-01-17T09:22:15Z","duration":null,"queued_at":"2012-01-17T09:22:07Z","started_at":"2012-01-17T09:22:10Z"},"status":"completed"} -------------------------------------------------------------------------------- signature TMjVYhk/+lQigy3hdkgTZjAaaroxAi126XaDzrQ1xWGyMji9oR0F5nfE73Mo kNs7Hk7aY1GQgtDRdBjgPE+C/6etF9nPFXPacWobaxSP35TGOrpoSACNQDAQ Q0wvn0Bm/jMvhBKoQ6YYUSx8KP8nd7VkgQmv4S0cakgixA4LHfg=

因为需要对URL进行POST,我想我需要定义一个新方法：

def deploy_receive
   data = JSON.parse(request.body)
end

我不确定的是,从这里开始.我如何从JSON中挑选属性并将它们放入Activities表中的各种属性中？

像这样的东西？

def deploy_receive
   data = JSON.parse(request.body)
   @activity = Activity.new(params[:fault])
   @activity.who = data.author    
end

任何指针将不胜感激！