无法保存“自定义 blob"到 Firestore [英] Cannot save "custom blob" to Firestore

问题描述

在 javascript 中，我从一个数组中创建一个 blob，如下所示:

In javascript I am creating a blob from an array like so:

const a = new Blob([[1,2,3]]);

当我尝试保存这个 blob 时:

when I try to save this blob like:

this.afs.collection('events').doc(event.getID()).set({data: new Blob([[1,2,3]])}).then((some) => {
      debugger;
    })

我收到一个错误:

DocumentReference.set() 调用了无效数据.不支持的字段值:自定义 Blob 对象(在字段数据中找到)

DocumentReference.set() called with invalid data. Unsupported field value: a custom Blob object (found in field data)

我应该怎么做才能通过 JS 将 blob 保存到 Firestore?

What should I do to save a blob via JS to Firestore?

推荐答案

您的 blob 类型必须为 firebase.firestore.Blob.然后使用静态 fromUint8Array:

Your blob needs to be of type firebase.firestore.Blob. Then using static fromUint8Array:

var firebase = require('firebase');
var app = firebase.initializeApp({ ... });
...
const blob = firebase.firestore.Blob.fromUint8Array(new Uint8Array([1,2,3]));

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