Question

MongoDB版本：2.6.10，节点v6.12.1。，Ubuntu 16.04.3

我有一个在MongoDB中生成对象的代码，当我在本地运行它时，代码工作得很好（流浪汉机器），但是当我在AWS服务器上运行它时会抛出以下错误 - 但仅针对非常具体的情况：

创建一个Outlet对象，
首次创建与Outlet关联的远程对象**

注意：

如果我不是第一次为Outlet创建Remote，则不会抛出错误。
远程对象是在数据库中创建的，但是节点进程终止并由Forever服务重新启动（导致UI中断）。

记录错误消息：

RangeError: Maximum call stack size exceeded
    at Function.isValid (/data1/slmusic/mean/node_modules/mongodb-core/node_modules/bson/lib/bson/objectid.js:313:36)
    at new ObjectID (/data1/slmusic/mean/node_modules/mongodb-core/node_modules/bson/lib/bson/objectid.js:46:24)
    at clone (/data1/slmusic/mean/node_modules/mongoose/lib/utils.js:272:12)
    at cloneObject (/data1/slmusic/mean/node_modules/mongoose/lib/utils.js:343:13)
    at clone (/data1/slmusic/mean/node_modules/mongoose/lib/utils.js:260:16)
    at model.Document.$toObject (/data1/slmusic/mean/node_modules/mongoose/lib/document.js:2073:13)
    at model.Document.toJSON (/data1/slmusic/mean/node_modules/mongoose/lib/document.js:2364:15)
    at clone (/data1/slmusic/mean/node_modules/mongoose/lib/utils.js:252:18)
    at cloneArray (/data1/slmusic/mean/node_modules/mongoose/lib/utils.js:362:14)
    at clone (/data1/slmusic/mean/node_modules/mongoose/lib/utils.js:247:12)
    at cloneObject (/data1/slmusic/mean/node_modules/mongoose/lib/utils.js:343:13)
    at clone (/data1/slmusic/mean/node_modules/mongoose/lib/utils.js:260:16)
    at model.Document.$toObject (/data1/slmusic/mean/node_modules/mongoose/lib/document.js:2073:13)
    at model.Document.toJSON (/data1/slmusic/mean/node_modules/mongoose/lib/document.js:2364:15)
    at clone (/data1/slmusic/mean/node_modules/mongoose/lib/utils.js:252:18)
    at cloneObject (/data1/slmusic/mean/node_modules/mongoose/lib/utils.js:343:13)

代码：

用于创建Remote的后端文件（create方法中的相关代码）

import * as Remote from "../models/Remote";
import * as Outlet from "../models/Outlet";
import * as Playlist from "../models/Playlist";
import * as Organization from "../models/Organization";


class RemoteRoutes {

   ....

    create(req: any, res: any, next: any) {
        Outlet.findById(req.body.oId, function (err: any, outlet: any) {
            if (err) {
                return next(err);
            }
            var remoteData = req.body;
            delete remoteData.oId;
            remoteData.outlet = outlet;
            Remote.create(remoteData, function (err: any, remote: any) {
                if (err) {
                    return next(err);
                }
                outlet.remotes.push(remote);
                outlet.save(function (err: any) {
                    res.json({
                        type: true,
                        data: remote,
                    });
                });
            });

        });
    }

    ...
}

var remoteRoute: RemoteRoutes = new RemoteRoutes();

export = remoteRoute;

用于创建远程

define('js/controllers/addRemoteCtrl', [], function() {

  function addRemoteCtrl($scope, $routeParams, Remotes, Outlets, loginSrv, auth, $location, alertServ, loaderServ, validationServ) {
    // console.log('$routeParams ', $routeParams);
    auth.verify();
    $scope.outlet = Outlets.get({
      id: $routeParams.oId
    });


    function handleRequest(res) {
      if (res.type) {
        loaderServ.hide();

        $location.url('/remotes/' + $routeParams.oId);
      } else {
        // console.log('res.data ' , res.data);
        // alert(res.data);
        alertServ.add('danger', res.data);

      }
    }

    $scope.addRemote = function() {

      var remote = new Remotes({
        name: $scope.name,
        email: $scope.email,
        oId: $routeParams.oId,
      });

      if (validationServ.validateRemote(remote)) {
        loaderServ.show();
        remote.$save(handleRequest);
      }
    }


  };

  addRemoteCtrl.$inject = ['$scope', '$routeParams', 'Remotes', 'Outlets', 'loginSrv', 'auth', '$location', 'alertServ', 'loaderServ', 'validationServ'];


  return addRemoteCtrl;
});

远程架构IRemote.ts：

import IOutlet = require("./IOutlet");


interface IRemote {
    name: string;
    email: string;
    outlet: IOutlet;

};

export = IRemote;

Remote Schema Remote.ts：

import * as mongoose from "mongoose";
import IRemote = require("./IRemote");




interface IRemoteModel extends IRemote, mongoose.Document { }

var remoteSchema = new mongoose.Schema({
    name: String,
    email: String,
    outlet: { type: mongoose.Schema.Types.ObjectId, required: true, ref: 'Outlet' }

});

var remote = mongoose.model<IRemoteModel>("Remote", remoteSchema);

export = remote;

Answer 1

正如Saravana所提到的，这是由循环引用引起的，可以解决如下：

使用以下代码获取遥控器（在RemotesCtrl.js中）：

$scope.getRemotes = function() {
  res = $http.get(API + '/outlet/remotes/' + $routeParams.id);
  res.then(function(res) {
    loaderServ.hide();

    $scope.remotes = res.data;
  });
  return res;
};

$scope.getRemotes();

并在remoteRoute.js中注释以下几行

create(req: any, res: any, next: any) {
    Outlet.findById(req.body.oId, function (err: any, outlet: any) {
        if (err) {
            return next(err);
        }
        var remoteData = req.body;
        delete remoteData.oId;
        remoteData.outlet = outlet;
        Remote.create(remoteData, function (err: any, remote: any) {
            if (err) {
                return next(err);
            }
            // outlet.remotes.push(remote);
            // outlet.save(function (err: any) {
                res.json({
                    type: true,
                    data: remote,
                });
            // });
        });

    });
}

以下是后端getRemote()的代码：

  getRemotes(req: any, res: any, next: any) {
    Remote.find({outlet: req.params.id}, function (err: any, post: any) {
        if (err) {
            return next(err);
        }
        res.json(post);
    });
  }

mongodb RangeError：最大调用堆栈大小超过

1 个答案: