Function _validate_id

dash/_validate.py:431–439

(comp)

    def _validate(value):
        def _validate_id(comp):
            component_id = stringify_id(getattr(comp, "id", None))
            if component_id and component_id in component_ids:
                raise exceptions.DuplicateIdError(
                    f"""
                    Duplicate component id found in the initial layout: `{component_id}`
                    """
                )
            component_ids.add(component_id)

        _validate_id(value)