If you have an array like this:
// hero.service.ts
hero: Observable<Hero[]>;
Can you explain how you would achieve a task similar to: hero.push(newHero)?
If you have an array like this:
// hero.service.ts
hero: Observable<Hero[]>;
Can you explain how you would achieve a task similar to: hero.push(newHero)?
If you're looking to achieve a certain goal and using Firestore, consider utilizing angularfirestorecollection to map them as observable arrays later on.
cardsCollection: AngularFirestoreCollection<Card>;
cardDoc: AngularFirestoreDocument<Card>;
cards: Observable<Card[]>;
During initialization, make sure to bind them together.
ngOnInit() {
this.cards = this.cardsCollection.snapshotChanges().map(changes => {
return changes.map(a => {
const data = a.payload.doc.data() as Card;
data.id = a.payload.doc.id;
return data;
});
});
}
You can then easily add cards to AngularFirestoreCollection.
addCard(card: Card) {
this.cardsCollection.add(card);
}
Feel free to check out my complete code and project on GitHub.
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