Question 33891 in React native Question posted in
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Collection references must have an odd number of segments – React native

I am currently encountering this problem in my react native app using Firebase:

Collection references must have an odd number of segments

I’ve seen similar cases in stackoverflow but wasn’t able to solve my problem. Here is my code :

  const getData = async () => {
    console.log(user.uid + " 🚧🚧🚧")
    const col = collection(db, "users", user.uid)
    const taskSnapshot = await getDoc(col)

    console.log(taskSnapshot)
  }

  getData()

I am trying to open my document with the document reference (user.uid) but I am getting this error : Collection references must have an odd number of segments

Hope you can help me solve this problem.

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2

Answers


  1. 0

    The getDoc() takes a DocumentReference as parameter and not a CollectionReference so you must use doc() instead of collection().

    import { doc, getDoc } from "firebase/firestore" 

const docRef = doc(db, "users", user.uid)
const taskSnapshot = await getDoc(col)
console.log(taskSnapshot.data() || "Doc does not exists")

    Also checkout Firestore: What's the pattern for adding new data in Web v9?

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  2. 0

    replace this

    collection(db, "users", user.uid)

    with this

    collection(db).document("users").collection(user.uid)
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