Utilizing Current User in API Routes

Once you’ve successfully implemented user authentication and retrieved the current user based on their access token, you can use the user information to personalize your API routes and enforce access controls. This guide will demonstrate how to utilize the current user in your FastAPI endpoints.

Accessing the Current User

In your FastAPI endpoints, you can access the current user object using the Depends decorator:

Python

from fastapi import APIRouter, Depends

router = APIRouter()

@router.get("/profile")
async def get_user_profile(current_user: User = Depends(get_current_user)):
    return current_user

@router.get("/protected-data")
async def get_protected_data(current_user: User = Depends(get_current_user)):
    # Check if the user has the necessary permissions
    if current_user.role != "admin":
        raise HTTPException(status_code=403, detail="Unauthorized")

    # Access protected data
    # ...

Enforcing Access Controls

You can use the current user information to enforce access controls and restrict access to certain endpoints or resources based on user roles or permissions.

Example:

Python

@router.get("/admin-only")
async def get_admin_data(current_user: User = Depends(get_current_user)):
    if current_user.role != "admin":
        raise HTTPException(status_code=403, detail="Unauthorized")

    # Access admin-only data
    # ...

Additional Factors

• User Roles: Define user roles and assign permissions to each role.
• Data Privacy: Ensure that you only expose the necessary user information to the client.
• Security: Protect against unauthorized access and privilege escalation.
• Performance: Consider caching user information to improve performance.

By utilizing the current user information in your API routes, you can create personalized and secure experiences for your users.