FEATURE: First Quote badge

db/migrate/20140710224658_add_is_quote_to_topic_links.rb

@@ -0,0 +1,23 @@
+class AddIsQuoteToTopicLinks < ActiveRecord::Migration
+  def up
+    add_column :topic_links, :quote, :boolean, default: false, null: false
+
+    # a primitive backfill, eventual rebake will catch missing
+    execute "
+    UPDATE topic_links
+    SET quote = true
+    WHERE id IN (
+    SELECT l.id
+      FROM topic_links l
+      JOIN posts p ON p.id = l.post_id
+      JOIN posts lp ON l.link_post_id = lp.id
+      WHERE p.raw LIKE '%\[quote=%post:' ||
+            lp.post_number::varchar || ',%topic:' ||
+            lp.topic_id::varchar || '%\]%\[/quote]%'
+    )"
+  end
+
+  def down
+    remove_column :topic_links, :quote
+  end
+end