CODEWITHSUNDEEP
javascriptfirebasegoogle-cloud-firestore
GabrielJSW
GabrielJSW

Reputation: 244

How to efficiently sort a list of firestore documents based on one value contained in each document?

Given that I have x documents that all contain a key-value pair containing information on when the document was created (something like time:2021-05-06(timestamp)), how would I sort the documents in ascending order as quickly as possible?

I am using javascript and firebase firestore.

My code so far looks like this:

const docs = await getDocs(
    collection(db, "users", auth.currentUser.uid, "valkompass")
  );
// sort docs

Upvotes: 0

Views: 681

Answers (1)

Marc Anthony B
Marc Anthony B

Reputation: 4109

As stated by @Frank , you can sort documents in ascending order by using the orderBy() method. See sample code below:

const q = query(collection(db, "users"), orderBy("timestamp", "desc"));

const docs = await getDocs(q);
docs.forEach((doc) => {
  // doc.data() is never undefined for query doc snapshots
  console.log(doc.id, " => ", doc.data());
});

For more information, you may check Order and limit data.

Upvotes: 1

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