observable

@frost/frost-web / Exports / observable

Function: observable

▸ observable(query, options?): Observable<DataSnapshot>

Example

In case of exact node

let value = observable(
                   child(
                       ref(this.db),
                       `/users/${userId}`,
                   ),
               ).pipe(map(value => value.val()))

Example

In case of a query

let value = observable(
                   query(
                       ref(this.db, 'users'),
                       orderByChild('type'),
                       equalTo('student'),
                   )
               ).pipe(map(value => value.val()))

Parameters

Name	Type	Description
query	Query	(Firebase Type) a query object that will be passed to the onValue FirebaseDB Function (this gould be returned from child/query functions )
options?	ListenOptions	(Firebase Type) an object for the listening options on the onValue FirebaseDB Function

Returns

Observable<DataSnapshot>

an RX observable for the provided query