Module error 

Application error type and HTTP mapping.

Enums

Error

Top-level error for the web service. Wraps the various library and IO errors so that handlers can use ? and the central IntoResponse impl turns them into HTTP responses.

Functions

is_fk_violation

Returns true when the given sqlx error wraps a SQLite foreign-key constraint violation. SQLite reports these as either extended code 787 (SQLITE_CONSTRAINT_FOREIGNKEY) or, for deferred / trigger-mediated failures, 1811 (SQLITE_CONSTRAINT_TRIGGER). To be robust across both we also fall back to a substring check of the error message.