How to handle dangling references to deleted records

Anvil Q&A
6

So, if this were wrapped in a function, it would look something like this (untested):

def table_has_row(table, possibly_stale_row_ref):
    """Returns a boolean."""
    try:
        return table.has_row(possibly_stale_row_ref)
    except anvil.tables.TableError as err:
        if "This row has been deleted" in str(err):
            return False  # row was stale
        raise
    except AttributeError as err:
        if "'LiveObjectProxy' object has no attribute 'has_record'" in str(err):
            return False  # row was stale
        raise