Fix trending tags returning less items than requested sometimes (#11513)

Add better sorting defaults to the hashtags admin UI

Add "not reviewed" filter to hashtags admin UI

1 files changed, 5 insertions, 4 deletions

diff --git a/app/models/trending_tags.rb b/app/models/trending_tags.rb
index 0a7e2feac..594ae9520 100644
--- a/app/models/trending_tags.rb
+++ b/app/models/trending_tags.rb
@@ -5,6 +5,7 @@ class TrendingTags
   EXPIRE_HISTORY_AFTER = 7.days.seconds
   EXPIRE_TRENDS_AFTER  = 1.day.seconds
   THRESHOLD            = 5
+  LIMIT                = 10
 
   class << self
     include Redisable
@@ -18,18 +19,18 @@ class TrendingTags
     end
 
     def get(limit, filtered: true)
-      tag_ids = redis.zrevrange("#{KEY}:#{Time.now.utc.beginning_of_day.to_i}", 0, limit - 1).map(&:to_i)
+      tag_ids = redis.zrevrange("#{KEY}:#{Time.now.utc.beginning_of_day.to_i}", 0, LIMIT - 1).map(&:to_i)
 
       tags = Tag.where(id: tag_ids)
       tags = tags.where(trendable: true) if filtered
       tags = tags.each_with_object({}) { |tag, h| h[tag.id] = tag }
 
-      tag_ids.map { |tag_id| tags[tag_id] }.compact
+      tag_ids.map { |tag_id| tags[tag_id] }.compact.take(limit)
     end
 
     def trending?(tag)
       rank = redis.zrevrank("#{KEY}:#{Time.now.utc.beginning_of_day.to_i}", tag.id)
-      rank.present? && rank <= 10
+      rank.present? && rank <= LIMIT
     end
 
     private
@@ -59,7 +60,7 @@ class TrendingTags
         old_rank = redis.zrevrank(key, tag.id)
 
         redis.zadd(key, score, tag.id)
-        request_review!(tag) if (old_rank.nil? || old_rank > 10) && redis.zrevrank(key, tag.id) <= 10 && !tag.trendable? && tag.requires_review? && !tag.requested_review?
+        request_review!(tag) if (old_rank.nil? || old_rank > LIMIT) && redis.zrevrank(key, tag.id) <= LIMIT && !tag.trendable? && tag.requires_review? && !tag.requested_review?
       end
 
       redis.expire(key, EXPIRE_TRENDS_AFTER)