Automatically create collection in firestore

Question

is it possible to update this method:

void uploadMatch(team1, team2) {
    Firestore.instance.collection("upcomings").add({
      "createdAt": Timestamp.now(),
      "upcomingTeam1": team1,
      "upcomingTeam2": team2
    });
  }

so that if the upcomings collection doesn't exist, it creates it? Thanks!

Solution

From the documentation:

Collections and documents are created implicitly in Cloud Firestore. Simply assign data to a document within a collection. If either the collection or document does not exist, Cloud Firestore creates it.

So to answer your question: It's not possible! The collection is created implicitly when you create a document and when you delete the last document in a collection, it will cease to exist.