How to perform compound queries with logical OR in Cloud Firestore?

Question

From the docs:

You can also chain multiple where() methods to create more specific queries (logical AND).

How can I perform an <

Answer 1

you can bind two Observables using the rxjs merge operator. Here you have an example.

import { Observable } from 'rxjs/Observable';
import 'rxjs/add/observable/merge';

...

getCombinatedStatus(): Observable {
   return Observable.merge(this.db.collection('foo', ref => ref.where('status','==','open')).valueChanges(),
                           this.db.collection('foo', ref => ref.where('status','==','upcoming')).valueChanges());
}

Then you can subscribe to the new Observable updates using the above method:

getCombinatedStatus.subscribe(results => console.log(results);

I hope this can help you, greetings from Chile!!