javascript - 无法将 "custom blob"保存到 Firestore

Question

在 javascript 中，我从数组创建一个 blob，如下所示:

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

当我尝试保存这个 blob 时，例如:

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

我收到错误:

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

如何通过 JS 将 blob 保存到 Firestore？

Answer 1

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

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