Translator implementation for psycopg2-specific database errors.

This module provides a concrete implementation of BasePsycopgTranslator tailored for psycopg2exceptions. It extracts error details using psycopg2's attribute-based interface: - pgcode: the SQLSTATE code (e.g. '23505' for unique violation) - pgerror: the full error message from PostgreSQL

Psycopg2ErrorTranslator 

Psycopg2ErrorTranslator(
    *,
    code_map: dict | None = None,
    check_map: dict | None = None,
)

Bases: BasePsycopgTranslator

Concrete error translator for psycopg2 exceptions.

Implements the _get_pgcode and _get_pgerror methods to extract error details from psycopg2 exception objects using their standard attributes.

This class supports customization via: - code_map: mapping of SQLSTATE codes to user-friendly messages - check_map: mapping of check constraint names to descriptive texts

Usage

translator = Psycopg2ErrorTranslator( code_map={"23505": "Значение уже существует"}, check_map={"users_age_check": "Возраст должен быть от 18 до 120"} )