CODEWITHSUNDEEP
iosswiftfirebasegoogle-cloud-firestore
Wimansha
Wimansha

Reputation: 61

How to create a new Firestore document without data?

I am trying to create a new document without any data (any fields) in it. But I can't find a way.

Upvotes: 3

Views: 2264

Answers (3)

Touhid
Touhid

Reputation: 1676

According to new document you can try like this:

    val mData = hashMapOf<String, String>()
    db.collection("collectionName").document("documentName").set(mData)
        .addOnSuccessListener { documentReference ->
            Log.d(TAG, "DocumentSnapshot added with ID: ${documentReference.toString()}")
        }
        .addOnFailureListener { e ->
            Log.w(TAG, "Error adding document", e)
        }

Upvotes: 0

Chaim Fishman
Chaim Fishman

Reputation: 41

You can use set() and provide an empty object.

firebase.firestore().collection('myCollection').doc('docId').set({})

Upvotes: 4

Alex Mamo
Alex Mamo

Reputation: 138824

I am trying to create a new document without any data (any fields) in it. But I can't find a way.

There is no way you can create a document without any data. You can use the following lines of code:

let db = Firestore.firestore()
let docRef = db.collection("yourCollection").document("yourDocument")
let documentID = docRef.documentID

But this should give you only the id of the document. Please note that it doesn't mean that it will create a document for you. With other words, it merely "reserves" an id for a document in a particular collection. So for a document to actualy exist, you should add at least a property of any type. It can even hold a null value. In fact, why to have a document if it doesn't hold anything?

However, if you want to create a subcollection within a document, you can use a document that actually does not exist. It will be displayed in italic, as explained in my answer from the following post:

Upvotes: 5

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