[Solved] Examine this FastAPI role check dependency and identify the mistake: async def check_admin(user: User = Depends(get_current_user)): if user.role != 'admin': return HTTPException(status_code=403) @app.... | FastAPI

FastAPI - Authentication and Security

Examine this FastAPI role check dependency and identify the mistake:

async def check_admin(user: User = Depends(get_current_user)):
    if user.role != 'admin':
        return HTTPException(status_code=403)

@app.get('/admin')
async def admin_panel(dep=Depends(check_admin)):
    return {'msg': 'Welcome admin'}

AThe dependency should not be async when checking roles

BReturning HTTPException instead of raising it prevents proper error handling

CThe user role comparison should use '==' instead of '!='

DDepends should not be used inside the endpoint function signature

Step-by-Step Solution

Solution:

Step 1: Understand HTTPException usage
HTTPException must be raised, not returned.
Step 2: Analyze the code
Returning HTTPException object does not trigger FastAPI's error handling.
Step 3: Correct approach
Use raise HTTPException(status_code=403) to block access.
Final Answer:
Returning HTTPException instead of raising it prevents proper error handling -> Option B
Quick Check:
Always raise HTTPException, don't return it [OK]

Quick Trick: Raise exceptions, don't return them in dependencies [OK]

Common Mistakes:

MISTAKES

Returning HTTPException object instead of raising
Misusing async keyword in dependencies
Incorrect role comparison operators

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More FastAPI Quizzes

Examine this FastAPI role check dependency and identify the mistake:

Step 1: Understand HTTPException usage

Step 2: Analyze the code

Step 3: Correct approach

Final Answer:

Quick Check:

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