FastAPI - Dependency Injection
Which of the following is the correct syntax to declare a dependency in a FastAPI path operation function?
Which of the following is the correct syntax to declare a dependency in a FastAPI path operation function?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Recall FastAPI dependency syntax
FastAPI uses Depends() to declare dependencies in function parameters.Step 2: Match correct syntax
The correct form is parameter: Type = Depends(callable), so def read_item(db: Session = Depends(get_db)): matches this pattern.Final Answer:
def read_item(db: Session = Depends(get_db)): -> Option BQuick Check:
Dependency syntax = parameter: Type = Depends(callable) [OK]
Quick Trick: Use Depends() to declare dependencies in function parameters [OK]
Common Mistakes:
MISTAKES- Using Inject() instead of Depends()
- Calling the dependency function inside Depends
- Swapping parameter and Depends types
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