如何插入“引用"?价值进入firestore? [英] How do you insert a "reference" value into firestore?

问题描述

我正在尝试将文档插入到集合中.我希望文档具有类型 reference 的属性以插入到集合中.但是每次我插入到集合中时，它都会以字符串或对象的形式出现.如何以编程方式插入 reference 类型的值?

I'm trying to insert a document into a collection. I want the document to have a attribute of type reference to insert into the collection. But every time I insert into the collection, it comes out as a string or an object. How can I programmatically insert a reference typed value?

绝对可以在 UI 中执行此操作:

It's definitely possible to do it in the UI:

推荐答案

可能最简单的解决方案是将引用键的值设置为 doc(collection/doc_key) 因为需要 DocumentReference.

Probably the simplest solution is to set the value of a reference key to a doc(collection/doc_key) because a DocumentReference is needed.

示例代码:

post = {
  content: "content...",
  title: "impressive title",
  user: db.doc('users/' + user_key),
};

db.collection('posts').add(post)

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