Favorite groups

db/migrate/20150623191904_create_favorite_groups.rb

@@ -0,0 +1,19 @@
+class CreateFavoriteGroups < ActiveRecord::Migration
+  def self.up
+    create_table :favorite_groups do |t|
+      t.text :name, :null => false
+      t.integer :creator_id, :null => false
+      t.text :post_ids, :null => false, :default => ""
+      t.integer :post_count, :null => false, :default => 0
+
+      t.timestamps
+    end
+
+    execute "create index index_favorite_groups_on_lower_name on favorite_groups (lower(name))"
+    add_index :favorite_groups, :creator_id
+  end
+
+  def self.down
+    drop_table :favorite_groups
+  end
+end