rails datagrid easyui

  def new
    # @foo = Foo.new
    @foos = Foo.find(:all,:conditions=>["project_id = #{@project.id}"])
    @foolist = @foos.map do |f|
      { :id => f.id, :subject => f.subject}
    end

    respond_to do |format|
      format.json { render :json => @foolist.to_json}
    end
  end

  def test_json
    ActiveRecord::Base.include_root_in_json = false
    @foos = Foo.find(:all,:conditions=>["project_id = #{@project.id}"])
    respond_to do |format|
      format.json { render :json => @foos}
    end
  end