解决layui中table异步数据请求不支持自定义返回数据格式的问题

//获得数据
Class.prototype.pullData = function(curr, loadIndex){
 var that = this
  ,options = that.config
  ,request = options.request
  ,response = options.response
  ,sort = function(){
  if(typeof options.initSort === 'object'){
   that.sort(options.initSort.field, options.initSort.type);
  }
 };
 
 that.startTime = new Date().getTime(); //渲染开始时间
 
 if(options.url){ //Ajax请求
  var params = {};
  params[request.pageName] = curr;
  params[request.limitName] = options.limit;
 
  //参数
  var data = $.extend(params, options.where);
  if(options.contentType && options.contentType.indexOf("application/json") == 0){ //提交 json 格式
   data = JSON.stringify(data);
  }
 
  $.ajax({
   type: options.method || 'get'
   ,url: options.url
   ,contentType: options.contentType
   ,data: data
   ,dataType: 'json'
   ,headers: options.headers || {}
   ,success: function(res){
    // 加入这部分！！！
    // 临时解决layui的table组件中response选项不支持多层级获取接口数据的方法
    // ----------------开始---------------------
    if (typeof options.responseHandler == "function") {
     res = options.responseHandler(res);
    }
    // ----------------结束---------------------
 
    if(res[response.statusName] != response.statusCode){
     that.renderForm();
     that.layMain.html('<div class="'+ NONE +'">'+ (res[response.msgName] || '返回的数据状态异常') +'</div>');
    } else {
     that.renderData(res, curr, res[response.countName]), sort();
     options.time = (new Date().getTime() - that.startTime) + ' ms'; //耗时（接口请求+视图渲染）
    }
    loadIndex && layer.close(loadIndex);
    typeof options.done === 'function' && options.done(res, curr, res[response.countName]);
   }
   ,error: function(e, m){
    that.layMain.html('<div class="'+ NONE +'">数据接口请求异常</div>');
    that.renderForm();
    loadIndex && layer.close(loadIndex);
   }
  });
 } else if(options.data && options.data.constructor === Array){ //已知数据
  var res = {}
   ,startLimit = curr*options.limit - options.limit
 
  res[response.dataName] = options.data.concat().splice(startLimit, options.limit);
  res[response.countName] = options.data.length;
 
  that.renderData(res, curr, options.data.length), sort();
  typeof options.done === 'function' && options.done(res, curr, res[response.countName]);
 }
};

responseHandler: function (res) {
 // 可进行数据操作
 return {
  "count": res.data.count,
  "data": res.data.companyList,
  "code": res.code == 200 ? 0 : -1 //code值为200表示成功
 };
},