FastAPI - Dependency Injection
Which of the following is the correct way to declare a dependency in a FastAPI path operation function?
Which of the following is the correct way to declare a dependency in a FastAPI path operation function?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Recall the syntax for dependencies
Dependencies are declared by assigning a parameter to
Depends()with the dependency function inside.Step 2: Check each option
def read_item(item_id: int, user=Depends(get_current_user)): correctly uses
user=Depends(get_current_user). Others have syntax errors or call the function directly.Final Answer:
def read_item(item_id: int, user=Depends(get_current_user)): -> Option CQuick Check:
Depends() with function inside parentheses [OK]
Quick Trick: Use Depends(function_name) with parentheses [OK]
Common Mistakes:
MISTAKES- Calling the dependency function directly
- Using Depends without parentheses
- Using square brackets instead of parentheses
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