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Fix #50 - Order ancestors/descendants by tree path

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This commit is contained in:
Eugen Rochko 2016-09-21 23:18:28 +02:00
parent d709151781
commit c0e9603c92
3 changed files with 12 additions and 6 deletions
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10
app/models/status.rb
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@ -61,11 +61,17 @@ class Status < ApplicationRecord
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])
ids = (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]).pluck(:id)
statuses = Status.where(id: ids).with_counters.with_includes.group_by(&:id)
ids.map { |id| statuses[id].first }
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])
ids = (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]).pluck(:id)
statuses = Status.where(id: ids).with_counters.with_includes.group_by(&:id)
ids.map { |id| statuses[id].first }
end
def self.as_home_timeline(account)