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Add Groupable methods has_ancestor, _descendant, _parent.

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voussoir 2020-09-27 13:01:19 -07:00
parent 5712d6dabd
commit 97cc023866
1 changed files with 12 additions and 0 deletions
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12
etiquette/objects.py
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@ -182,6 +182,9 @@ class GroupableMixin(metaclass=abc.ABCMeta):
parents = set(self.group_getter_many(parent_ids))
return parents
def has_ancestor(self, ancestor):
return ancestor in self.walk_parents()
def has_any_child(self):
query = f'SELECT 1 FROM {self.group_table} WHERE parentid == ? LIMIT 1'
row = self.photodb.sql_select_one(query, [self.id])
@ -198,6 +201,15 @@ class GroupableMixin(metaclass=abc.ABCMeta):
row = self.photodb.sql_select_one(query, [self.id, member.id])
return row is not None
def has_descendant(self, descendant):
return self in descendant.walk_parents()
def has_parent(self, parent):
self.assert_same_type(parent)
query = f'SELECT 1 FROM {self.group_table} WHERE parentid == ? AND memberid == ?'
row = self.photodb.sql_select_one(query, [parent.id, self.id])
return row is not None
@abc.abstractmethod
def remove_child(self, member):
if not self.has_child(member):