猫鼬-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数据库中.

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

(请注意，以下所有代码均经过简化，以便于在此处编写)

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

所以我声明一个我拥有的人员模式的变量:

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

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

模式本身看起来像:

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

保存时只需一个简单的步骤:

And when it comes to saving its just a simple:

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

因此，使用邮递员，我会在体内发送一个数组-但是，每次我检查数据库时，它只会显示整个数组的一个条目，即我的发送方式:

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:

有什么想法我应该做什么?

Any ideas what extra I'm supposed to do?

推荐答案

从我的评论中撰写:

用猫鼬指定字符串数组的方法如下:

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

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

但是，这里的问题很可能与Postman有关，因为它以字符串形式发送数组".您可以通过检查req.body.tags的类型来进行检查，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)

如果此方法返回一个String，请确保将Postman中的内容类型设置为JSON，如此所示屏幕截图，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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