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我正在尝试使用 node/express/bodyParser/mongoose 的组合将新的“播放列表”保存到 mongoDB。这是我到目前为止的代码：

router.route('/playlists')

// create a playlist (accessed at POST http://localhost:8080/api/playlists)
.post(function(req, res) {

    var playlist = new Playlist({});      // create a new instance of the Playlist model
    playlist.businessName = req.body.businessName;
    playlist.businessEmail = req.body.businessEmail;

    // save the playlist and check for errors
    playlist.save(function(err) {
        if (err)
            res.send(err);

        res.json({ message: playlist.businessName + " created a playlist with email - " + playlist.businessEmail + " - " + playlist });
    });

});

当我使用 POSTMAN 发布时，我得到以下响应：

"message": "Test Business created a playlist with email - test@gmail.com - { __v: 0, _id: 55aff6c368f7d3ac2f000001 }"

playlist.businessName 和 playlist.businessEmail 都像我预期的那样返回，但是这些都没有显示在数据库中或仅显示在播放列表响应中。当我发布时，数据库中只显示以下内容：

{“_id”：{“$oid”：“55aff680551ec57031000001”}，“__v”：0}

但是，当我删除其中一个键：值对并像下面这样更改它时，它可以工作：

router.route('/playlists')

// create a playlist (accessed at POST http://localhost:8080/api/playlists)
.post(function(req, res) {

    var playlist = new Playlist({});      // create a new instance of the Playlist model
    playlist.name = req.body.businessName;
    //playlist.businessEmail = req.body.businessEmail;

    // save the playlist and check for errors
    playlist.save(function(err) {
        if (err)
            res.send(err);

        res.json({ message: playlist.name + " created a playlist - " + playlist });
    });

});

数据库/文档中的数据：

{
"_id": {
    "$oid": "55aff94e214389d83c000001"
},
"name": "Test Business",
"__v": 0

}

playlist.name 现在显示在文档中。我的问题是如何将 playlist.name 和 playlist.email 等保存到文档中？

更新

更新架构后，现在一切都按预期工作。

旧架构：

var mongoose     = require('mongoose');
var Schema       = mongoose.Schema;

var PlaylistSchema   = new Schema({
    name: String
});

module.exports = mongoose.model('Playlist', PlaylistSchema);

更新的架构：

var mongoose     = require('mongoose');
var Schema       = mongoose.Schema;

var PlaylistSchema   = new Schema({
    businessName: String,
    businessEmail: String
});

module.exports = mongoose.model('Playlist', PlaylistSchema);
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