validation_exception_handler() — fastapi Function Reference

Architecture documentation for the validation_exception_handler() function in tutorial005_py39.py from the fastapi codebase.

Function python FastAPI Applications calls 2

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FastAPI→ Applications→ validation_exception_handler() — fastapi Function Reference

Dependency Diagram

graph TD
  b0932b49_ef9e_cadd_e3e1_0c5b962e9b6b["validation_exception_handler()"]
  608da54e_64a9_bb38_3bf3_fbbf45198033["tutorial005_py39.py"]
  b0932b49_ef9e_cadd_e3e1_0c5b962e9b6b -->|defined in| 608da54e_64a9_bb38_3bf3_fbbf45198033
  1ac1bc37_1a47_e7e2_9156_ab0473094700["jsonable_encoder()"]
  b0932b49_ef9e_cadd_e3e1_0c5b962e9b6b -->|calls| 1ac1bc37_1a47_e7e2_9156_ab0473094700
  7702da8c_3f6b_a8bb_d4ca_61939c372354["errors()"]
  b0932b49_ef9e_cadd_e3e1_0c5b962e9b6b -->|calls| 7702da8c_3f6b_a8bb_d4ca_61939c372354
  style b0932b49_ef9e_cadd_e3e1_0c5b962e9b6b fill:#6366f1,stroke:#818cf8,color:#fff

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Source Code

docs_src/handling_errors/tutorial005_py39.py lines 11–15

async def validation_exception_handler(request: Request, exc: RequestValidationError):
    return JSONResponse(
        status_code=422,
        content=jsonable_encoder({"detail": exc.errors(), "body": exc.body}),
    )