javascript - Actor 错误: Cast to ObjectId failed for value "id goes here" at path "_id" for model "Article"

Question

我遇到了一些奇怪的事情，想知道是否有人可以帮助我。我有一个 MEAN 应用程序，能够完美地从 MongoDB 检索所有记录，但是当我尝试按 id 仅检索 1 条记录时，我收到了 CastError。我什至尝试降级我的 Mongo 版本，但问题仍然存在。任何帮助都会很棒。谢谢

var express = require('express');
var router = express.Router();

var Article = require('../models/article');


/* GET users listing. */
router.get('/', function(req, res, next) {
  Article.getArticles(function (err, articles) {
      if (err) {
          console.log(err);
      } else {
          res.json(articles);

      }
  });
});

router.get('/:id', function(req, res, next) {
  Article.getArticleById(req.params.id, function (err, article) {
      if (err) {
          console.log(err);
      } else {
          res.json(article);
      }
  });
});

module.exports = router;

var mongoose = require('mongoose').set('debug', true);

var articleSchema =  mongoose.Schema({

    title: {
        type: String,
        index: true,
        required: true
    },
    body: {
        type: String,
        required: true
    },
    date: {
        type: Date,
        default: Date.now
    },
    category: {
        type: String,
        index: true,
        required: true
    }
});

var Article = module.exports = mongoose.model('Article', articleSchema);

// Get all articles
module.exports.getArticles = function (callback) {
    Article.find(callback);
};

// Get article by ID
module.exports.getArticleById = function (id, callback) {
     Article.findById(id, callback);

};

[CastError: Cast to ObjectId failed for value "58753da5d192f1aa25ebdd00" at path "_id" for model "Article"]
  message: 'Cast to ObjectId failed for value "58753da5d192f1aa25ebdd00" at path "_id" for model "Article"',
  name: 'CastError',
  stringValue: '"58753da5d192f1aa25ebdd00"',
  kind: 'ObjectId',
  value: '58753da5d192f1aa25ebdd00',
  path: '_id',
  reason: undefined,

Answer 1

这似乎是最新版本 Mongoose 中的一个已知错误。我建议降级到 4.7.2:

https://github.com/Automattic/mongoose/issues/4867