Supported data types in Firebase - Mini Project: Build & Apply

Firebase Supported Data Types

📖 Scenario: You are building a simple Firebase Firestore database to store user profiles for a mobile app. Each user profile will have different types of data such as text, numbers, dates, and boolean values.

🎯 Goal: Create a Firestore document with fields using the supported Firebase data types: string, number, boolean, timestamp, and array.

📋 What You'll Learn

Create a Firestore document data dictionary with specific fields and values

Add a configuration variable for the current timestamp

Use the Firestore data types correctly in the document data

Complete the Firestore document creation code with the correct collection and document ID

💡 Why This Matters

🌍 Real World

Storing user profiles with various data types is common in mobile and web apps using Firebase Firestore.

💼 Career

Understanding supported data types and how to write documents is essential for backend and cloud developers working with Firebase.

1

Create Firestore document data with basic fields

Create a dictionary called user_profile with these exact fields and values: 'name': 'Alice', 'age': 30, 'is_active': true

Firebase

# Your code here

Need a hint?

Use Python dictionary syntax with exact keys and values.

2

Add a timestamp field for the current time

Import datetime from datetime module and create a variable called current_time set to datetime.datetime.now()

Firebase

user_profile = {
    'name': 'Alice',
    'age': 30,
    'is_active': True
}
# Your code here

Need a hint?

Use datetime.now() to get the current timestamp.

3

Add timestamp and array fields to the document data

Add a new key 'last_login' with value current_time and a key 'favorite_colors' with value ['red', 'green', 'blue'] to the user_profile dictionary

Firebase

from datetime import datetime

current_time = datetime.now()

user_profile = {
    'name': 'Alice',
    'age': 30,
    'is_active': True
}
# Your code here

Need a hint?

Add the new keys and values inside the user_profile dictionary.

4

Complete Firestore document creation code

Import firestore from firebase_admin, initialize the client as db = firestore.client(), and write the user_profile dictionary to the collection 'users' with document ID 'alice123' using db.collection('users').document('alice123').set(user_profile)

Firebase

from datetime import datetime

current_time = datetime.now()

user_profile = {
    'name': 'Alice',
    'age': 30,
    'is_active': True,
    'last_login': current_time,
    'favorite_colors': ['red', 'green', 'blue']
}
# Your code here

Need a hint?

Use Firestore client to write the document with the exact collection and document ID.