附加到Firestore中的Arary字段 [英] Append to an arary field in Firestore

问题描述

我正在使用Firebase和Vuejs创建一个数据库元素，其中包含对象数组.

I'm using Firebase and Vuejs to create an database element, which has object array inside.

这就是对象的外观，我想通过表单将任务添加到"moreTasks"选项卡中.

That's how the object looks, and I want to add tasks through the form into the 'moreTasks' tab.

我尝试使用它，但是它只是在数据库中创建新实体.

I tried using this, but it just creates new entity in the database.

      db.collection('Tasks').add({
    tasker: this.tasker.taskerName
  })

我也尝试检查API，但我无法理解引用，因为我使用了不同的方法来实现该目标.

I also tried checking API but I couldnt understand the refs, because I was using different methods to achieve that goal.

creatTask() {
  db.collection('Tasks').add({
    task_id: this.task_id,
    name: this.name,

...

解决此问题的正确方法是什么?

What would be correct way to approach this problem?

推荐答案

您可以使用

You can append an item to an array using FieldValue.arrayUnion() as described in the documentation. For example:

// Atomically add a new region to the "regions" array field.
washingtonRef.update({
    regions: firebase.firestore.FieldValue.arrayUnion("greater_virginia")
});

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