Sending Confirmation Emails During Registration

Email confirmation is a common practice in web applications to verify user accounts and prevent spam. In this guide, we’ll demonstrate how to send confirmation emails during the user registration process in a FastAPI application.

Creating a Confirmation Email Function

Python

from fastapi import APIRouter
from app.utils import send_email

router = APIRouter()

def send_confirmation_email(recipient_email, confirmation_token):
    subject = "Please Confirm Your Email"
    body = f"Click the following link to confirm your email: http://your-app-url/confirm/{confirmation_token}"

    send_email(recipient_email, subject, body)

Sending the Confirmation Email

In your user registration endpoint, call the send_confirmation_email function after creating the user:

Python

@router.post("/register", response_model=UserSchema)
async def register_user(user: UserCreate, db: Session = Depends(get_db)):
    # ... (rest of the registration logic)

    confirmation_token = create_confirmation_token(user.id)
    send_confirmation_email(user.email, confirmation_token)

    return {"message": "Registration successful. Please check your email for confirmation."}

Creating a Confirmation Endpoint

Create an endpoint to handle confirmation requests:

Python

@app.get("/confirm/{token}")
async def confirm_email(token: str, db: Session = Depends(get_db)):
    try:
        user_id = decode_confirmation_token(token)
        user = await db.query(User).filter(User.id == user_id).first()
        if not user:
            raise HTTPException(status_code=404, detail="User not found")

        user.is_verified = True
        db.add(user)
        await db.commit()
        return {"message": "Email confirmed"}
    except HTTPException as e:
        raise e

By following these steps, you can effectively implement email confirmation in your FastAPI application, enhancing the security and reliability of your user registration process.