def category_chain_overlaps(cls, category_ids):
"""
Create a filter that checks whether the event has any of the
provided category ids in its parent chain.
Warning: This method cannot be used in a negated filter.
:param category_ids: A list of category ids or a single
category id
"""
from indico.modules.categories import Category
if not isinstance(category_ids, (list, tuple, set)):
category_ids = [category_ids]
cte = Category.get_subtree_ids_cte(category_ids)
return cte.c.id == Event.category_id
