<Firestore document id related issues> I have an i...

# stackoverflow

[user]

Firestore document id related issues
I have an interesting issue while playing with Firebase as Kotlin.
val docRef = db.collection("Year")
.document(DB_year.toString())
.collection("Month")
.document((DB_month+1).toString())
.collection("Day")
.document(today)
.collection("write")
.get()
.addOnSuccessListener { result ->

for(document in result) {
println("document_id : " + document.id)...