FastAPI Request Body Validation Explained | Build POST /enquiry API with Pydantic (BeginnerTutorial)
In this video, you'll learn how to build a real-world POST API endpoint using FastAPI and Pydantic.
We create a /enquiry endpoint that accepts a student's name, email, and course, then use FastAPI's built-in validation to automatically reject invalid requests.
By the end of this tutorial, you'll understand:
What is a POST request?
What is a request body?
Creating Pydantic models
Validating JSON data
Using EmailStr for email validation
Understanding 422 Validation Error
Testing APIs using Swagger UI
Common beginner mistakes
This is Day 17 of the 30-Day Real Software Development Skills Sprint, where we learn practical backend development skills used in real software engineering jobs.
📌 Topics Covered:
FastAPI Request Body
Pydantic Models
POST API
Email Validation
Field Validation
422 Unprocessable Entity
Swagger API Testing
Backend Development for Beginners
💻 Source Code: See Comment
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