Firestore collections and documents in GCP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to get a reference to the Firestore collection named 'users'.

GCP

const usersCollection = firestore.collection('[1]');

Drag options to blanks, or click blank then click option'

Ausers

Bdocuments

Cdata

Ditems

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'documents' instead of the collection name.

Using 'data' or 'items' which are not collection names.

The collection name is 'users', so you must pass 'users' to the collection() method.

2fill in blank

medium

Complete the code to get a reference to a document with ID 'user123' inside the 'users' collection.

GCP

const userDoc = firestore.collection('users').[1]('user123');

Drag options to blanks, or click blank then click option'

Adoc

Bget

Cadd

Dset

Attempts:

3 left

💡 Hint

Common Mistakes

Using get() instead of doc() to get a document reference.

Using add() which creates a new document with a random ID.

To reference a specific document by ID, use the doc() method with the document ID as argument.

3fill in blank

hard

Fix the error in the code to add a new document with data to the 'orders' collection.

GCP

firestore.collection('orders').[1]({ item: 'book', quantity: 3 });

Drag options to blanks, or click blank then click option'

Adoc

Badd

Cset

Dget

Attempts:

3 left

💡 Hint

Common Mistakes

Using set() directly on a collection which causes an error.

Using get() which only reads data.

To add a new document with an auto-generated ID, use the add() method with the data object.

4fill in blank

hard

Fill both blanks to update the 'status' field to 'shipped' in the document with ID 'order456' in the 'orders' collection.

GCP

firestore.collection('[1]').[2]('order456').update({ status: 'shipped' });

Drag options to blanks, or click blank then click option'

Aorders

Busers

Cdoc

Dcollection

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'users' instead of 'orders' for the collection.

Using collection() instead of doc() to get a document reference.

You must specify the 'orders' collection and then get the document reference with doc('order456') before calling update().

5fill in blank

hard

Fill all three blanks to delete the document with ID 'session789' from the 'sessions' collection.

GCP

firestore.[1]('[2]').[3]('session789').delete();

Drag options to blanks, or click blank then click option'

Acollection

Bdoc

Csessions

Dget

Attempts:

3 left

💡 Hint

Common Mistakes

Using get() instead of doc() to get the document reference.

Swapping collection name and method calls.

First get the collection 'sessions', then get the document 'session789' with doc(), then call delete() to remove it.