Display trending hashtags on admin dashboard (#8038)
parent
7e2678f7f6
commit
0d13e30ad2
app
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@ -27,6 +27,7 @@ module Admin
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@saml_enabled = ENV['SAML_ENABLED'] == 'true'
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@pam_enabled = ENV['PAM_ENABLED'] == 'true'
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@hidden_service = ENV['ALLOW_ACCESS_TO_HIDDEN_SERVICE'] == 'true'
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@trending_hashtags = TrendingTags.get(7)
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end
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private
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@ -1,7 +1,10 @@
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# frozen_string_literal: true
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class TrendingTags
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KEY = 'trending_tags'
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EXPIRE_HISTORY_AFTER = 7.days.seconds
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EXPIRE_TRENDS_AFTER = 1.day.seconds
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THRESHOLD = 5
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class << self
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def record_use!(tag, account, at_time = Time.now.utc)
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@ -9,6 +12,14 @@ class TrendingTags
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increment_historical_use!(tag.id, at_time)
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increment_unique_use!(tag.id, account.id, at_time)
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increment_vote!(tag.id, at_time)
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end
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def get(limit)
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key = "#{KEY}:#{Time.now.utc.beginning_of_day.to_i}"
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tag_ids = redis.zrevrange(key, 0, limit).map(&:to_i)
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tags = Tag.where(id: tag_ids).to_a.map { |tag| [tag.id, tag] }.to_h
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tag_ids.map { |tag_id| tags[tag_id] }.compact
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end
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private
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@ -25,6 +36,22 @@ class TrendingTags
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redis.expire(key, EXPIRE_HISTORY_AFTER)
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end
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def increment_vote!(tag_id, at_time)
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key = "#{KEY}:#{at_time.beginning_of_day.to_i}"
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expected = redis.pfcount("activity:tags:#{tag_id}:#{(at_time - 1.day).beginning_of_day.to_i}:accounts").to_f
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expected = 1.0 if expected.zero?
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observed = redis.pfcount("activity:tags:#{tag_id}:#{at_time.beginning_of_day.to_i}:accounts").to_f
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if expected > observed || observed < THRESHOLD
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redis.zrem(key, tag_id.to_s)
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else
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score = ((observed - expected)**2) / expected
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redis.zadd(key, score, tag_id.to_s)
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end
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redis.expire(key, EXPIRE_TRENDS_AFTER)
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end
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def disallowed_hashtags
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return @disallowed_hashtags if defined?(@disallowed_hashtags)
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@ -138,3 +138,12 @@
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%span.pull-right.positive-hint= fa_icon 'check fw'
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- else
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%span.pull-right.negative-hint= fa_icon 'times fw'
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.dashboard__widgets__trends
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%div
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%h4= t 'admin.dashboard.trends'
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%ul
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- @trending_hashtags.each do |tag|
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%li
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= link_to "##{tag.name}", web_url("timelines/tag/#{tag.name}")
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%span.pull-right= number_with_delimiter(tag.history[0]['accounts'].to_i)
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