Mongoose - 保存字符串数组 [英] Mongoose - Save array of strings

问题描述

我无法使用 Mongoose 将字符串数组保存到我的数据库中.

I can't save an array of strings into my DB using Mongoose.

(注意下面的所有代码都经过简化，以便于在此处编写)

(Note all code below is simplified for ease of writing here)

所以我声明了一个我拥有的人模式的变量:

So i declare a variable of a person schema I have:

var newPerson = new Person ({
    tags: req.body.tags
});

架构本身看起来像:

var personSchema = new mongoose.Schema({
  tags: Array
});

当谈到保存它只是一个简单的:

And when it comes to saving its just a simple:

newPerson.save(function(err) {
    //basic return of json
});

所以使用 Postman 我在正文中发送一个数组 - 但是每次我检查数据库时，它只显示一个包含整个数组的条目，即我如何发送它:

So using Postman I send in an array in the body - however everytime I check the DB, it just shows one entry with the array as a whole i.e. how I sent it:

知道我应该做什么额外的事情吗?

Any ideas what extra I'm supposed to do?

推荐答案

根据我的评论写下来:

在 mongoose 中指定字符串数组的方式是这样的:

The way to specify an array of strings in mongoose is like so:

var personSchema = new mongoose.Schema({
tags: [{
    type: String
}]

然而，这里的问题最有可能与 Postman 有关，因为它将数组"作为字符串发送.您可以通过检查 req.body.tags 的类型来检查这一点，如下所示:

However, the problem here is most-likely to do with Postman as it is sending the 'array' as a string. You can check this by checking the type of req.body.tags like so:

console.log(typeof req.body.tags)

如果这返回一个字符串，请确保将 Postman 中的内容类型设置为 JSON，如this屏幕截图而不是默认的表单数据"选项.

If this returns a String, make sure to set the content-type in Postman to JSON as seen in this screenshot rather than the default 'form-data' option.

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