FastAPI Router Py

Intermediatev1.0.0

Create FastAPI routers with CRUD operations, authentication dependencies, and proper response models.

Content

Create FastAPI routers following established patterns with proper authentication, response models, and HTTP status codes.

Quick Start

Copy the template from assets/template.py and replace placeholders:

-{{ResourceName}} → PascalCase name (e.g., Project)
-{{resource_name}} → snake_case name (e.g., project)
-{{resource_plural}} → plural form (e.g., projects)

Authentication Patterns

python

# Optional auth - returns None if not authenticated
current_user: Optional[User] = Depends(get_current_user)

# Required auth - raises 401 if not authenticated
current_user: User = Depends(get_current_user_required)

Response Models

python

@router.get("/items/{item_id}", response_model=Item)
async def get_item(item_id: str) -> Item:
    ...

@router.get("/items", response_model=list[Item])
async def list_items() -> list[Item]:
    ...

HTTP Status Codes

python

@router.post("/items", status_code=status.HTTP_201_CREATED)
@router.delete("/items/{id}", status_code=status.HTTP_204_NO_CONTENT)

Integration Steps

1. Create router in src/backend/app/routers/

2. Mount in src/backend/app/main.py

3. Create corresponding Pydantic models

4. Create service layer if needed

5. Add frontend API functions

When to Use

This skill is applicable to execute the workflow or actions described in the overview.

FAQ

Discussion

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# Optional auth - returns None if not authenticated current_user: Optional[User] = Depends(get_current_user) # Required auth - raises 401 if not authenticated current_user: User = Depends(get_current_user_required)