Book Image

Building Python Web APIs with FastAPI

By : Abdulazeez Abdulazeez Adeshina
Book Image

Building Python Web APIs with FastAPI

By: Abdulazeez Abdulazeez Adeshina

Overview of this book

RESTful web services are commonly used to create APIs for web-based applications owing to their light weight and high scalability. This book will show you how FastAPI, a high-performance web framework for building RESTful APIs in Python, allows you to build robust web APIs that are simple and intuitive and makes it easy to build quickly with very little boilerplate code. This book will help you set up a FastAPI application in no time and show you how to use FastAPI to build a REST API that receives and responds to user requests. You’ll go on to learn how to handle routing and authentication while working with databases in a FastAPI application. The book walks you through the four key areas: building and using routes for create, read, update, and delete (CRUD) operations; connecting the application to SQL and NoSQL databases; securing the application built; and deploying your application locally or to a cloud environment. By the end of this book, you’ll have developed a solid understanding of the FastAPI framework and be able to build and deploy robust REST APIs.
Table of Contents (14 chapters)
Part 1: An Introduction to FastAPI
Part 2: Building and Securing FastAPI Applications
Part 3: Testing And Deploying FastAPI Applications

CRUD operations

In, create a new Database class that takes a model as an argument during initialization:

from pydantic import BaseSettings, BaseModel
from typing import Any, List, Optional
class Database:
    def __init__(self, model):
        self.model = model

The model passed during initialization is either the Event or User document model class.


Let’s create a method under the Database class to add a record to the database collection:

    async def save(self, document) -> None:
        await document.create()

In this code block, we have defined the save method to take the document, which will be an instance of the document passed to the Database instance at the point of instantiation.


Let’s create the methods to retrieve...