javascript - 省略 mongodb 中不必要的属性

Question

我有这个模型:

var accountSchema = new mongoose.Schema({
    'seeker': {
        'fullName': String,
        'ageGroup': String,
        'education': String,
        'lookingForWork': String,
        'employmentStatus': String,
        'resume': String, // Filename ans stuff
        'mainWorkExp': String,
    },
    'employer': {
        'activationStatus': String,
        'companyName': String,
        'contactPersonFullName': String,
        'companyWebsite': String,
        'hiringRegion': [String],
        'logo': [],
        'description': String,
        'industry': String,
        'workingWithEOSP': Boolean,
        'booth': {
            'exists': Boolean, // Boolean to store with the employer created his/her booth or not
            'numberVisits': Number // number of clicks on the particular booth
            /* We can add more attributes here as we go */
        }
    },
});

它已导出，一切都很棒。但有一个问题。如果我尝试使用此脚本创建一个搜索者帐户:

new account({
    'seeker': {
        'fullName': r.fullName,
        'ageGroup': r.ageGroup,
        'education': r.education,
        'lookingForWork': r.lookingForWork,
        'employmentStatus': r.employmentStatus,
        'mainWorkExp': r.mainWorkExp,
        'resume': r.file,
    },
}),
r.password,

实际上我在数据库中得到了这个:

{
    "_id": {
        "$oid": "5b4689ab6d68e81d32fda65e"
    },
    "seeker": {
        "fullName": "Alex Ironside",
        "ageGroup": "18 - 24",
        "education": "Some High School",
        "lookingForWork": "Less than 1 month",
        "employmentStatus": "Unemployed",
        "mainWorkExp": "Business, Finance or Administration. Includes all levels of office admin, accounting/bookkeeping, human resources, banking, etc."
    },
    "employer": { // The problem is right here!
        "hiringRegion": [],
        "logo": []
    }
}

正如您所看到的，我没有在代码中的任何位置提及 logo 或 hiringRegion，但它仍然会被创建。这是为什么？这是否与它们在模型中都被声明为数组有关？我该如何解决这个问题？

我基本上不希望在我的代码创建的文档中创建employer属性/对象。它应该只是 seeker 对象，但我不能只从模型中删除 logo 和 hiringRegions，因为我在其他地方使用它们，作为数组。

r 对象是 req.body 的缩写。

Answer 1

Mongoose 数组 implicitly have a default value of empty array这样您就可以立即开始使用该阵列。改为这样做:

'hiringRegion': { type: [String], default: undefined },
'logo': { type: [], default: undefined }