[Solved] What is wrong with this Firestore document reference?const docRef = db.doc('users'); — Ans: Missing document ID in path | GCP

GCP - Cloud Firestore and Bigtable

What is wrong with this Firestore document reference?

const docRef = db.doc('users');

AMissing document ID in path

BCollection name should be 'user' not 'users'

Cdoc() cannot be called on db directly

DNo error, this is valid

Step-by-Step Solution

Solution:

Step 1: Understand doc() path requirements
doc() requires a full path including collection and document ID.
Step 2: Analyze given path
'users' is a collection name only, missing document ID after slash.
Final Answer:
Missing document ID in path -> Option A
Quick Check:
doc() needs collection/document path [OK]

Quick Trick: doc() path must include document ID after collection [OK]

Common Mistakes:

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What is wrong with this Firestore document reference?