将数据写入Firebase Firestore中的嵌套对象 [英] Write data in to nested object in firebase firestore

问题描述

我有一个数据结构，如下所示:

I have a data structure that looks as follows:

这是收藏集的顶层:

我想写些增加字段数的记录，但我做不到.我尝试了许多不同的方法，所以我不想遍历所有方法.我最接近的是通过:

I want to write to increment the field count but I can't do it. I've tried so many different methods that I'd rather not go through all of them. The closest I've gotten was through:

const pageRef = admin.firestore().collection("pages").doc(image.page);

pageRef.set(
  {
    [`images.${image.position}.count`]: admin.firestore.FieldValue.increment(
      1
    ),
  },
  { merge: true }
);

但是那让我有了:

请帮助.更改页面的结构是一种选择.

Please help. Changing the structure of pages is an option.

这是我尝试复制的内容:更新firestore文档中嵌套对象中的字段?

This is what I've tried to replicate: Update fields in nested objects in firestore documents?

推荐答案

问题在于如何使用点通知.

The issue is on how the point notaition is being used.

在帖子中，您分享了他们使用的示例是:

In the Post you shared the example they use is:

var setAda = dbFirestore.collection('users').doc('alovelace').update({
    "first.test": "12345"
});

将其应用于您的代码和模型将是:

Applying this to your Code and model would be:

const pageRef = admin.firestore().collection("pages").doc(image.page);

pageRef.set(
  {
    `images[${image.position}].count`: admin.firestore.FieldValue.increment(
      1
    ),
  },
  { merge: true }
);

这将影响数组图像"中的元素，即元素 image.position 的值计数.

This will affect the element in the Array Images, the element image.position its value count.

这篇关于将数据写入Firebase Firestore中的嵌套对象的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！