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firebasepolymerfirebase-realtime-databasepolymerfire

Polymerfire - Read document once

I was wondering if there is a way to retrieve a document just once, and avoid every kind of bidirectional sync with the database.

The Polymerfire documentation is poor, and I couldn't find it.

Thanks

Solution

  • No, the firebase-document element does not have a 'once' mode. However, you can easily drop down to the underlying JS SDK if you've already initialized the SDK with firebase-app:

    Polymer({
  is: 'my-element',
  attached: function() {
    firebase.database().ref('/path/to/doc')
      .once('value').then(snap => this.data = snap.val());
  }
});