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Ancestors and descendants of statuses

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This commit is contained in:
Eugen Rochko 2016-03-21 11:43:21 +01:00
parent 7e00a21ea6
commit 35aafdba96
3 changed files with 12 additions and 3 deletions
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8
app/models/status.rb
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@ -76,6 +76,14 @@ class Status < ActiveRecord::Base
m
end
def ancestors
Status.where(id: Status.find_by_sql(['WITH RECURSIVE search_tree(id, in_reply_to_id, path) AS (SELECT id, in_reply_to_id, ARRAY[id] FROM statuses WHERE id = ? UNION ALL SELECT statuses.id, statuses.in_reply_to_id, path || statuses.id FROM search_tree JOIN statuses ON statuses.id = search_tree.in_reply_to_id WHERE NOT statuses.id = ANY(path)) SELECT id FROM search_tree ORDER BY path DESC', self.id]) - [self])
end
def descendants
Status.where(id: Status.find_by_sql(['WITH RECURSIVE search_tree(id, path) AS (SELECT id, ARRAY[id] FROM statuses WHERE id = ? UNION ALL SELECT statuses.id, path || statuses.id FROM search_tree JOIN statuses ON statuses.in_reply_to_id = search_tree.id WHERE NOT statuses.id = ANY(path)) SELECT id FROM search_tree ORDER BY path', self.id]) - [self])
end
after_create do
self.account.stream_entries.create!(activity: self)
end