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authorTakeshi Umeda <noel.yoshiba@gmail.com>2021-12-14 07:21:14 +0900
committerGitHub <noreply@github.com>2021-12-13 23:21:14 +0100
commitbda8e4f815708bd4deeb3c2310732e0b7a4e15e8 (patch)
tree1527b1e3e410f5d713be783b34bf8a9c4ecc4844 /db/migrate
parent0fc73bbcb937d62c47a37325794825c77ef8a8a7 (diff)
Fix follow recommendation biased towards older accounts (#17126)
Diffstat (limited to 'db/migrate')
-rw-r--r--db/migrate/20211213040746_update_account_summaries_to_version_2.rb24
1 files changed, 24 insertions, 0 deletions
diff --git a/db/migrate/20211213040746_update_account_summaries_to_version_2.rb b/db/migrate/20211213040746_update_account_summaries_to_version_2.rb
new file mode 100644
index 000000000..0d1f092ec
--- /dev/null
+++ b/db/migrate/20211213040746_update_account_summaries_to_version_2.rb
@@ -0,0 +1,24 @@
+class UpdateAccountSummariesToVersion2 < ActiveRecord::Migration[6.1]
+  def up
+    reapplication_follow_recommendations_v2 do
+      drop_view :account_summaries, materialized: true
+      create_view :account_summaries, version: 2, materialized: { no_data: true }
+      safety_assured { add_index :account_summaries, :account_id, unique: true }
+    end
+  end
+
+  def down
+    reapplication_follow_recommendations_v2 do
+      drop_view :account_summaries, materialized: true
+      create_view :account_summaries, version: 1, materialized: { no_data: true }
+      safety_assured { add_index :account_summaries, :account_id, unique: true }
+    end
+  end
+
+  def reapplication_follow_recommendations_v2
+    drop_view :follow_recommendations, materialized: true
+    yield
+    create_view :follow_recommendations, version: 2, materialized: { no_data: true }
+    safety_assured { add_index :follow_recommendations, :account_id, unique: true }
+  end
+end