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Adjust hot to include more recent topics

This commit is contained in:
Robin Ward 2013-03-29 13:32:54 -04:00
parent 436515ec6c
commit df85201298
1 changed files with 3 additions and 2 deletions
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5
app/models/hot_topic.rb
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@ -17,10 +17,12 @@ class HotTopic < ActiveRecord::Base
older_percentage = 0.2 # how many old topics we want as a percentage
new_days = 21 # how many days old we consider old
# Include high percentile recent topics
exec_sql("INSERT INTO hot_topics (topic_id, category_id, score)
SELECT t.id,
t.category_id,
RANDOM()
((1.0 - (EXTRACT(EPOCH FROM CURRENT_TIMESTAMP-t.created_at)/86400) / :days_ago) * 0.95) + (RANDOM() * 0.05)
FROM topics AS t
WHERE t.deleted_at IS NULL
AND t.visible
@ -29,7 +31,6 @@ class HotTopic < ActiveRecord::Base
AND t.archetype <> :private_message
AND created_at >= (CURRENT_TIMESTAMP - INTERVAL ':days_ago' DAY)
AND t.percent_rank < :hot_percentile
ORDER BY 3 DESC
LIMIT :limit",
hot_percentile: hot_percentile,
limit: ((1.0 - older_percentage) * max_hot_topics).round,