get_current_user() — fastapi Function Reference

Architecture documentation for the get_current_user() function in tutorial004_py39.py from the fastapi codebase.

Function python FastAPI Routing calls 1

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FastAPI→ Routing→ get_current_user() — fastapi Function Reference

Dependency Diagram

graph TD
  36791528_e4a7_7a04_28e9_c0674cbc3c84["get_current_user()"]
  a1cb859f_602f_c57b_9972_9c8d6cb843e2["tutorial004_py39.py"]
  36791528_e4a7_7a04_28e9_c0674cbc3c84 -->|defined in| a1cb859f_602f_c57b_9972_9c8d6cb843e2
  544f2faa_c3bc_87b5_d920_f058c56a1f06["get_user()"]
  36791528_e4a7_7a04_28e9_c0674cbc3c84 -->|calls| 544f2faa_c3bc_87b5_d920_f058c56a1f06
  style 36791528_e4a7_7a04_28e9_c0674cbc3c84 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

docs_src/security/tutorial004_py39.py lines 90–107

async def get_current_user(token: str = Depends(oauth2_scheme)):
    credentials_exception = HTTPException(
        status_code=status.HTTP_401_UNAUTHORIZED,
        detail="Could not validate credentials",
        headers={"WWW-Authenticate": "Bearer"},
    )
    try:
        payload = jwt.decode(token, SECRET_KEY, algorithms=[ALGORITHM])
        username = payload.get("sub")
        if username is None:
            raise credentials_exception
        token_data = TokenData(username=username)
    except InvalidTokenError:
        raise credentials_exception
    user = get_user(fake_users_db, username=token_data.username)
    if user is None:
        raise credentials_exception
    return user