How can you combine role-based access control with OAuth2 scopes in FastAPI to restrict access to an endpoint requiring both 'admin' role and 'write' scope?

hard🚀 Application Q9 of 15

FastAPI - Authentication and Security

AUse a dependency that checks user roles and OAuth2 scopes together, raising HTTPException if either check fails

BUse separate endpoints for role and scope checks without combining them

CCheck only OAuth2 scopes since roles are redundant

DUse middleware to check roles and ignore scopes

Step-by-Step Solution

Solution:

Step 1: Understand combined access control
Both role and scope must be checked together to enforce strict access.
Step 2: Identify correct approach
Use a dependency that checks user roles and OAuth2 scopes together, raising HTTPException if either check fails combines checks in one dependency and raises exception if either fails, which is correct.
Final Answer:
Combine role and scope checks in one dependency raising exceptions if unauthorized -> Option A
Quick Check:
Combine role and scope checks in one dependency [OK]

Quick Trick: Combine role and scope checks in one dependency [OK]

Common Mistakes:

MISTAKES

Splitting checks into separate endpoints
Ignoring role or scope checks
Using middleware incorrectly for RBAC

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How can you combine role-based access control with OAuth2 scopes in FastAPI to restrict access to an endpoint requiring both 'admin' role and 'write' scope?

Step 1: Understand combined access control

Step 2: Identify correct approach

Final Answer:

Quick Check:

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