CODEWITHSUNDEEP
javascriptfirebasegoogle-cloud-firestore
Jimmy Kane
Jimmy Kane

Reputation: 16825

Cannot save "custom blob" to Firestore

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

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

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;
    })

I get an error:

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

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

Upvotes: 2

Views: 3595

Answers (1)

Sami Hult
Sami Hult

Reputation: 3082

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]));

Upvotes: 5

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