1 files changed, 19 insertions, 0 deletions
diff --git a/db/migrate/20200816200239_backfill_root_to_conversations.rb b/db/migrate/20200816200239_backfill_root_to_conversations.rb
new file mode 100644
index 000000000..2056e0765
--- /dev/null
+++ b/db/migrate/20200816200239_backfill_root_to_conversations.rb
@@ -0,0 +1,19 @@
+class BackfillRootToConversations < ActiveRecord::Migration[5.2]
+  disable_ddl_transaction!
+
+  def up
+    Rails.logger.info("Adding URI to statuses without one...")
+    Status.where(uri: nil).or(Status.where(uri: '')).find_each do |status|
+      status.update(uri: ActivityPub::TagManager.instance.uri_for(status))
+    end
+
+    Rails.logger.info('Setting root of all conversations...')
+    safety_assured do
+      execute('UPDATE conversations SET root = s.uri FROM (SELECT conversation_id, uri FROM statuses WHERE NOT reply) AS s WHERE conversations.id = s.conversation_id')
+    end
+  end
+
+  def down
+    true
+  end
+end