Add compound index on impressionable_type, message, impressionable_id

hyperrjas · Apr 3, 2012 · a773a4d · a773a4d
1 parent 63ea4d5
commit a773a4d
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diff --git a/lib/generators/active_record/templates/create_impressions_table.rb b/lib/generators/active_record/templates/create_impressions_table.rb
@@ -14,6 +14,7 @@ def self.up
       t.text :referrer
       t.timestamps
     end
+    add_index :impressions, [:impressionable_type, :message, :impressionable_id], :name => "impressionable_type_message_index", :unique => false
     add_index :impressions, [:impressionable_type, :impressionable_id, :request_hash], :name => "poly_request_index", :unique => false
     add_index :impressions, [:impressionable_type, :impressionable_id, :ip_address], :name => "poly_ip_index", :unique => false
     add_index :impressions, [:impressionable_type, :impressionable_id, :session_hash], :name => "poly_session_index", :unique => false

diff --git a/upgrade_migrations/version_1_1_2.rb b/upgrade_migrations/version_1_1_2.rb
@@ -0,0 +1,9 @@
+class Version04UpdateImpressionsTable < ActiveRecord::Migration
+  def self.up
+    add_index :impressions, [:impressionable_type, :message, :impressionable_id], :name => "impressionable_type_message_index", :unique => false
+  end
+
+  def self.down
+    remove_column :impressions, :impressionable_type_message_index
+  end
+end