Fix to apply emoji reaction count to follow recommendations

db/migrate/20211213083734_update_follow_recommendations_to_version_3.rb

@@ -0,0 +1,13 @@
+class UpdateFollowRecommendationsToVersion3 < ActiveRecord::Migration[6.1]
+  def up
+    drop_view :follow_recommendations, materialized: true
+    create_view :follow_recommendations, version: 3, materialized: { no_data: true }
+    safety_assured { add_index :follow_recommendations, :account_id, unique: true }
+  end
+
+  def down
+    drop_view :follow_recommendations, materialized: true
+    create_view :follow_recommendations, version: 2, materialized: { no_data: true }
+    safety_assured { add_index :follow_recommendations, :account_id, unique: true }
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2021_12_13_040746) do
+ActiveRecord::Schema.define(version: 2021_12_13_083734) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -1306,7 +1306,7 @@ ActiveRecord::Schema.define(version: 2021_12_13_040746) do
            HAVING (count(follows.id) >= 5)
           UNION ALL
            SELECT account_summaries.account_id,
-              (sum((status_stats.reblogs_count + status_stats.favourites_count)) / (1.0 + sum((status_stats.reblogs_count + status_stats.favourites_count)))) AS rank,
+              (sum(((status_stats.reblogs_count + status_stats.favourites_count) + status_stats.emoji_reactions_count)) / (1.0 + sum(((status_stats.reblogs_count + status_stats.favourites_count) + status_stats.emoji_reactions_count)))) AS rank,
               'most_interactions'::text AS reason
              FROM (((status_stats
                JOIN statuses ON ((statuses.id = status_stats.status_id)))
@@ -1314,7 +1314,7 @@ ActiveRecord::Schema.define(version: 2021_12_13_040746) do
                LEFT JOIN follow_recommendation_suppressions ON ((follow_recommendation_suppressions.account_id = statuses.account_id)))
             WHERE ((statuses.id >= (((date_part('epoch'::text, (now() - 'P30D'::interval)) * (1000)::double precision))::bigint << 16)) AND (account_summaries.sensitive = false) AND (follow_recommendation_suppressions.id IS NULL))
             GROUP BY account_summaries.account_id
-           HAVING (sum((status_stats.reblogs_count + status_stats.favourites_count)) >= (5)::numeric)) t0
+           HAVING (sum(((status_stats.reblogs_count + status_stats.favourites_count) + status_stats.emoji_reactions_count)) >= (5)::numeric)) t0
     GROUP BY t0.account_id
     ORDER BY (sum(t0.rank)) DESC;
   SQL

db/views/follow_recommendations_v03.sql

@@ -0,0 +1,34 @@
+SELECT
+  account_id,
+  sum(rank) AS rank,
+  array_agg(reason) AS reason
+FROM (
+  SELECT
+    account_summaries.account_id AS account_id,
+    count(follows.id) / (1.0 + count(follows.id)) AS rank,
+    'most_followed' AS reason
+  FROM follows
+  INNER JOIN account_summaries ON account_summaries.account_id = follows.target_account_id
+  INNER JOIN users ON users.account_id = follows.account_id
+  LEFT OUTER JOIN follow_recommendation_suppressions ON follow_recommendation_suppressions.account_id = follows.target_account_id
+  WHERE users.current_sign_in_at >= (now() - interval '30 days')
+    AND account_summaries.sensitive = 'f'
+    AND follow_recommendation_suppressions.id IS NULL
+  GROUP BY account_summaries.account_id
+  HAVING count(follows.id) >= 5
+  UNION ALL
+  SELECT account_summaries.account_id AS account_id,
+         sum(reblogs_count + favourites_count + emoji_reactions_count) / (1.0 + sum(reblogs_count + favourites_count + emoji_reactions_count)) AS rank,
+         'most_interactions' AS reason
+  FROM status_stats
+  INNER JOIN statuses ON statuses.id = status_stats.status_id
+  INNER JOIN account_summaries ON account_summaries.account_id = statuses.account_id
+  LEFT OUTER JOIN follow_recommendation_suppressions ON follow_recommendation_suppressions.account_id = statuses.account_id
+  WHERE statuses.id >= ((date_part('epoch', now() - interval '30 days') * 1000)::bigint << 16)
+    AND account_summaries.sensitive = 'f'
+    AND follow_recommendation_suppressions.id IS NULL
+  GROUP BY account_summaries.account_id
+  HAVING sum(reblogs_count + favourites_count + emoji_reactions_count) >= 5
+) t0
+GROUP BY account_id
+ORDER BY rank DESC