discourse/app/jobs/scheduled/reviewable_priorities.rb

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2019-05-12 21:55:44 -04:00
# frozen_string_literal: true
class Jobs::ReviewablePriorities < ::Jobs::Scheduled
every 1.day
# We need this many reviewables before we'll calculate priorities
def self.min_reviewables
15
end
# We want to look at scores for items with this many reviewables (flags) attached
def self.target_count
2
end
def execute(args)
return unless Reviewable.where('score > 0').count >= self.class.min_reviewables
res = DB.query_single(<<~SQL, target_count: self.class.target_count)
SELECT COALESCE(PERCENTILE_DISC(0.5) WITHIN GROUP (ORDER BY score), 0.0) AS medium,
COALESCE(PERCENTILE_DISC(0.85) WITHIN GROUP (ORDER BY score), 0.0) AS high
FROM (
SELECT r.score
FROM reviewables AS r
INNER JOIN reviewable_scores AS rs ON rs.reviewable_id = r.id
GROUP BY r.id
HAVING COUNT(*) >= :target_count
) AS x
SQL
return unless res && res.size == 2
medium, high = res
Reviewable.set_priorities(medium: medium, high: high)
end
end