Question

我第一次使用Node和Express设置服务器，但在保存我在PUT调用中检索的响应时遇到问题。这是一项调查 - 我需要用＆＃34;响应＆＃34;来更新模型。在调查中输入的对象。

我确实在控制台中看到了正确的响应输出，但接收到＃34;对象[对象对象]，[对象对象]，[对象对象]，[对象对象]，[对象对象]没有方法＆＃39 ; findById＆＃39;＆＃34;来自我的＆＃34;保存＆＃34;功能

提前谢谢。

小猫-questions.json

[
{
    "id": "favorite-food",
    "number": "1",
    "url": "favorite-food",
    "name": "Favorite Food",
    "question": "Which of the following best describes your kitty's palatte?",
    "responded" : "default response",
    "query": "Which of the following best describes your kitty's palatte?",
    "answers": {
        "Grumpy" : "Fresh Water Salmon, no bones, served on china",
        "Hipster" : "Nothing - trying to fit into newer, tighter jeans",
        "Pudge" : "Anything and everything my owner is eating",
        "Bub" : "Mice",
        "Meow" : "Roaches"
    }
},
{
    "id": "favorite-band",
    "number": "2",
    "url": "favorite-band",
    "name": "Favorite Band",
    "question": "Your kitty claws at you desperatly when it wants to listen to:",
    "responded" : "default response",
    "query": "Which of the following best describes your kitty's palatte?",
    "answers": {
        "Bub" : "Country",
        "Grumpy" : "Mozart. Popular music is for the plebs.",
        "Pudge" : "z100",
        "Meow" : "Very heavy metal",
        "Hipster" : "something long winded"
    }
}

Server.js

var express = require('express'),
   http = require('http'),
   questions = require('./data/kitty-questions');

 var app = express()
  .use(express.bodyParser())
  .use(express.static('public'));

  app.get('/questions', function  (req, res) {
    res.json(questions);
  });

  app.post('/questions', function  (req, res) {
       var matches = questions.filter(function  (question) {
       return question.url === req.body.url;
    });

       if (matches.length > 0) {
          res.json(409, {status: 'question already exists'});
        } else {
           req.body.id = req.body.url;
           questions.push(req.body);
           res.json(req.body);
       }
   });

   app.put('/questions/:question_name', function (req, res) {
       var matches = questions.filter(function  (question) {
         return question.url === req.params.question_name;
   }); 

    var catResponse = req.body.responded;
     console.log(JSON.stringify(catResponse));

    return questions.findById(req.params.question_name, function (err, question) {
        question.catResponse = req.body.responded;
        return question.save(function (err) {
           if (!err) {
           console.log("updated");
           } else {
           console.log(err);
           }
       return res.send(question);
      });
   });    

  });

app.get('/questions/:question_name', function  (req, res) {
  var matches = questions.filter(function  (question) {
    return question.url === req.params.question_name;
});

  if (matches.length > 0) {
     res.json(matches[0]);
   } else {
    res.json(404, {status: 'invalid survey question'});
   }

 });

app.delete('/questions/:question_name', function  (req, res) {
  var found = false;
  items.forEach(function (question, index) {
      if (question.url === req.params.question_name) {
         found = index;
      }
   });

   if (found) {
      items.splice(found, 1);
      res.json(200, {status: 'deleted'});
    } else {
      res.json(404, {status: 'invalid survey question deletion'});
    }

   });


   app.get('/*', function  (req, res) {
     res.json(404, {status: 'not found'});
   });

  http.createServer(app).listen(3000, function () {
    console.log("Server ready at http://localhost:3000");
});

STRING FROM THE TERMINAL AFTER MAKING PUT CALL:

Server ready at http://localhost:3000

TypeError：Object [{＆＃34; id＆＃34;：＆＃34; favorite-food＆＃34;，＆＃34; number＆＃34;：＆＃34; 1＆＃34;，＆＃34; url＆＃34;：＆＃34;最喜欢的食物＆＃34;，＆＃34;名称＆＃34;：＆＃34;最喜欢的食物＆＃34;，＆＃34;问题＆＃34;：＆＃34;以及以下最佳描述了你的小猫的指示牌？＆＃34;，＃34;＆＃34;：＆＃34;默认响应＆＃34;，＆＃34;查询＆＃34;：＆＃34;其中以下最佳描述了你的小猫的味道？＆＃34;，＆＃34;答案＆＃34;：{＆＃34; Grumpy＆＃34;：＆＃34;淡水鲑鱼，没有骨头，服务于中国＆＃34;，＆＃34;时髦＆＃34;：＆＃34;没什么 - 试图穿上更新，更紧身的牛仔裤＆＃34;，＃34; Pudge＆＃34;：＆＃34;任何东西和我的主人的一切正在吃＆＃34;，＆＃34; Bub＆＃34;：＆＃34;小鼠＆＃34;，＆＃34;喵＆＃34;：＆＃34;蟑螂＆＃34;}}，{＆＃34; id＆＃34;：＆＃34;喜爱波段＆＃34;＆＃34;数＆＃34;：＆＃34; 2＆＃34;＆＃34; URL＆＃34;：＆＃34;喜爱波段＆＃ 34;，＆＃34;名称＆＃34;：＆＃34;最喜欢的乐队＆＃34;，＆＃34;问题＆＃34;：＆＃34;当你想听的时候，你的小猫绝望地抓住你：＆＃ 34;，＆＃34;回复＆＃34;：＆＃34;默认回复＆＃34;，＆＃34;查询＆＃34;：＆＃ 34;以下哪一项最能描述你的小猫的屁股？＆＃34;，＆＃34;答案＆＃34;：{＆＃34; Bub＆＃34;：＆＃34;国家＆＃34;，＆＃34;脾气暴躁＆＃34;：＆＃34;莫扎特。流行音乐是为了拍摄。＆＃34;，＃34; Pudge＆＃34;：＆＃34; z100＆＃34;，＆＃34; Meow＆＃34;：＆＃34;非常重金属＆＃34;，＆＃34;时髦＆＃34;：＆＃34;长篇大论＆＃34;}}，{＆＃34; id＆＃34;：＆＃34;最爱 - 藏身＆＃34;，＆＃34;号码＆＃34 ;：＆＃34; 3＆＃34;，＆＃34; url＆＃34;：＆＃34; favorite-hideout＆＃34;，＆＃34; name＆＃34;：＆＃34; Favorite Favoriteout＆＃34;，＆＃34;问题＆＃34;：＆＃34;你最有可能在这里找到你的野兽：＆＃34;，＆＃34;回复＆＃34;：＆＃34;＆＃34;，＆＃34; ;答案＆＃34;：{＆＃34; Bub＆＃34;：＆＃34;在你的肩膀＆＃34;，＆＃34; Grumpy＆＃34;：＆＃34;独自。在任何地方，只有一个人。＆＃34;，＆＃34; Pudge＆＃34;：＆＃34;在冰箱＆＃34;，＆＃34; Meow＆＃34;：＆＃34;赶走其他猫＆＃34;，＆＃34;时髦＆＃34;：＆＃34;外面，吸烟。＆＃34;}}，{＆＃34; id＆＃34;：＆＃34;最喜欢的朋友＆＃34;，＆＃34;数字＆＃34;：＆＃34; 4＆＃34;，＆＃34; url＆＃34;：＆＃34;收藏的朋友＆＃34;，＆＃34;姓名＆＃34;：＆＃34;收藏的朋友＆＃34 ;，＆＃34;问题＆＃34;：＆＃34;你的小猫通常相处：＆＃34;，＆＃34;回复＆＃34;：＆＃34;＆＃34;，＆＃34;答案＆＃34;：{＆＃34; Bub＆＃34;：＆＃34;其他猫＆＃34;，＆＃34; Grumpy＆＃34;：＆＃34;没有人。＆＃34;，＆＃34; Pudge＆＃34;：＆＃34;人类，动物，无论是谁。＆＃34;，＆＃34;喵喵＆＃34;：＆＃34;听话的动物＆＃34;，＆＃34;时髦＆＃34;：＆＃34 ;狗＆＃34;}}，{＆＃34; ID＆＃34;：＆＃34;喜爱名人＆＃34;＆＃34;数＆＃34;：＆＃34; 5＆＃34;＆＃34 ;网址＆＃34;：＆＃34;最喜欢的名人＆＃34;，＆＃34;名称＆＃34;：＆＃34;最喜欢的名人＆＃34;，＆＃34;问题＆＃34;：＆＃34;您的猫科动物无法得到足够的红地毯助行器：＆＃34;，＆＃34;回复＆＃34;：＆＃34;＆＃34;，＆＃34;答案＆＃34;：{＆＃34; Bub＆＃34 ;：＆＃34; Meg Ryan＆＃34;，＆＃34; Grumpy＆＃34;：＆＃34; Jack Nicholson＆＃34;，＆＃ 34; Pudge＆＃34;：＆＃34; John Candy＆＃34;，＆＃34; Meow＆＃34;：＆＃34; McArthur将军是否算数？＆＃34;，＆＃34;时髦＆＃34;：＆＃34; Zooey Deschanel＆＃34;}}]没有方法＆＃39;更新＆＃39;

3/19 UPDATE:

 app.put('/questions/:question_name', function (req, res) {

      var question = questions.filter(function  (question) {
      return question.url === req.params.question_name;

   }); 

   var defaultResponse = question[0].responded;
   res.json(defaultResponse);

   var catResponse = req.body.responded;

    questions.update({id: req.params.question_name}, function (err, question) {
    question.catResponse = catResponse;

    question.save(function (err) {
       if (!err) {
           res.send(catResponse);
       } else {
          res.send(400); //or something
       }

     });
   });

 });

Answer 1

这里有很多不必要的回报，至少，它们使代码难以阅读。

删除一些东西并忽略匹配变量，因为在PUT中没有使用它，这样的东西可能更像你正在寻找的东西：

app.put('/questions/:question_name', function (req, res) {

    var catResponse = req.body.responded;

    questions.update({id: req.params.question_name}, function (err, question) {
        question.catResponse = catResponse;

        question.save(function (err) {
           if (!err) {
               res.send(question);
           } else {
              res.send(400); //or something
           }

      });
   });    

});

*的修改 *

我认为问题=要求（＆＃39; ./ data / kitty-questions＆＃39;）;是你的猫鼬模特。您需要提出问题才能成为更新工作的猫鼬模型。

像：

var mongoose = require('mongoose') , Questions = mongoose.model('Question')

然后您的问题模型文件可能如下所示：

var mongoose = require('mongoose'); var Schema = mongoose.Schema; var ObjectId = Schema.ObjectId; QuestionSchema = new Schema({ //keys and stuff in here }); mongoose.model('Question', QuestionSchema);

Node.js Express PUT功能 - 保存数据

1 个答案: