Question

我是Mongoose的新手。我的目标是能够将数据推送到Mongoose数组，所以我可以在以后循环它：这是我的架构：

var moduleSchema = new mongoose.Schema({
  name: {type: String, index: {unique: true}},
  priority: Number,
  author: String,
  enabled: Boolean,
  keywords: [{keyword: String}],
  code: String
});

我希望能够以这种格式向快递发送一个JavaScript对象，并将其插入自己的＆＃34;关键字＆＃34;领域。理想情况下，输出应如下所示：

{
    "_id": "56401885bff833582442bb5f",
    "name": "ModName",
    "priority": 1,
    "author": "tscrip",
    "enabled": true,
    "code": "TEST",
    "__v": 0,
    "keywords": [
        {
            "keyword": "Dog",
            "keyword": "Cat"
        }
     ]
}

每次我PUT数据更新时，我都会得到：

0:D,
1:O,
2:G

或者我得到：

The argument to $each in $push must be an array but it was of type Object

以下是我更新模型的代码：

if(req.body.keywords) updateObj.keywords = JSON.parse(req.body.keywords);

var keywordsArr = updateObj.keywords;
Module.findByIdAndUpdate({
    "_id": req.params.id
    },
    { $set: {keywords: { $each: { keyword: {keywordsArr}}}}},
    function(err, numAffected){
        console.log(err);
    }
);

我发送一个简单的JSON对象进行更新：

{
    "keywords": [
        "mouse",
        "bird"
    ]
}

非常感谢任何帮助。

更新1

我试图让它成为一个数组：

var moduleSchema = new mongoose.Schema({
name: {type: String, index: {unique: true}},
priority: Number,
author: String,
enabled: Boolean,
keywords: [String],
code: String
});

并像这样更新：

if(req.body.keywords) updateObj.keywords = JSON.parse(req.body.keywords);
var keywordsArr = updateObj.keywords.keywords;
console.log(keywordsArr);
Module.findByIdAndUpdate({
    "_id": req.params.id
    },
    { $push: {keywords: {$each: keywordsArr}}},
    function(err, numAffected){
        console.log(err);
    }
);

但我现在收到错误：

{ [MongoError: exception: The field 'keywords' must be an array but is of type Object in document {_id: ObjectId('56401885bff833582442bb5f')}]
name: 'MongoError',
message: 'exception: The field \'keywords\' must be an array but is of type Object in document {_id: ObjectId(\'56401885bff833582442bb5f\')}'

Answer 1

将对象推送到数组Mongoose：

我的MongoDB或Mongoose Schema是这样的：

{
"_id": {
    "$oid": "5511241323214"
},
"target": "200",
"region": "United Kingdom",
"fullname": "John Smith",
"milesLog": [
    {
        "miles": "1",
        "activity": "Walking",
        "month": "Apirl 2015",
        "_id": {
            "$oid": "5527d"
        },
        "date": {
            "$date": "2015-04-10T13:53:43.549Z"
        }
    },
    {
        "month": "March 2015",
        "activity": "Walking",
        "miles": "1",
        "_id": {
            "$oid": "5527d9"
        },
        "date": {
            "$date": "2015-04-10T14:07:37.004Z"
        }
    }
]
"__v": 0
}

以下是我用来将数据推送到数组中的代码。 Mongoose带有内置＆＃34; findByIdAndUpdate＆＃34;功能

app.put('/user/:id', function(req, res) { // Using mongoose in-built function "findbyID" User.findById(req.params.id, function(err, provider) { // If error show. if (err) { res.send(err); } // Using mongoose "findbyIDandUpdate" fucntion to "PUT" data into the array User.findByIdAndUpdate( provider.id, {$push: {"milesLog": { // Passing Data miles: req.body.miles, activity: req.body.activity, month: req.body.month }}}, {safe: true, upsert: true}, function(err, model) { console.log(err); }, // Response to send to User data as JSON res.json(provider) ); // Saving Data into MongoDB provider.save(function(err) { if (err) { res.send(err); } }); }); });

将JSON对象推入Mongoose数组

1 个答案: