How do you protect a FastAPI endpoint using Depends and OAuth2PasswordBearer?
WHAT IT TESTS: your grasp of FastAPI dependency injection for security. ANSWER OUTLINE: OAuth2PasswordBearer sets the token URL, Depends injects it into the endpoint, and FastAPI validates the Bearer header.
WHAT IT TESTS: your understanding of FastAPI's dependency injection system for securing endpoints. ANSWER OUTLINE: first, instantiate OAuth2PasswordBearer with a tokenUrl to define the security scheme and where to send credentials; second, add the scheme as a dependency with Depends so FastAPI injects it into the path operation; third, FastAPI automatically validates the Authorization: Bearer header, returns 401 if missing, and documents the scheme in OpenAPI.
Read the original → fastapi.tiangolo.com
- #fastapi
- #python
- #authentication
- #dependency-injection
- #oauth2
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