Function find_component

dash/_layout_utils.py:124–144

Find a component by ID. If neither ``layout`` nor ``page`` is provided, searches the full app layout (preferring ``validation_layout`` for completeness).

(
    component_id: str | dict,
    layout: Component | None = None,
    page: str | None = None,
)

def find_component(
    component_id: str | dict,
    layout: Component | None = None,
    page: str | None = None,
) -> Component | None:
    """Find a component by ID.

    If neither ``layout`` nor ``page`` is provided, searches the full
    app layout (preferring ``validation_layout`` for completeness).
    """
    if page is not None:
        layout = _resolve_page_layout(page)

    if layout is None:
        app = get_app()
        layout = getattr(app, "validation_layout", None) or app.get_layout()

    for comp, _ in traverse(layout):
        if getattr(comp, "id", None) == component_id:
            return comp
    return None


def parse_wildcard_id(pid: Any) -> dict | None: