Custom index type support with :using.

1 files changed, 11 insertions, 1 deletions

diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb
index 0622d0a909..688bf1774b 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb
@@ -160,8 +160,9 @@ module ActiveRecord
             desc_order_columns = inddef.scan(/(\w+) DESC/).flatten
             orders = desc_order_columns.any? ? Hash[desc_order_columns.map {|order_column| [order_column, :desc]}] : {}
             where = inddef.scan(/WHERE (.+)$/).flatten[0]
+            type = inddef.scan(/USING (.+?) /).flatten[0].to_sym
 
-            column_names.empty? ? nil : IndexDefinition.new(table_name, index_name, unique, column_names, [], orders, where)
+            column_names.empty? ? nil : IndexDefinition.new(table_name, index_name, unique, column_names, [], orders, where, type)
           end.compact
         end
 
@@ -408,6 +409,15 @@ module ActiveRecord
           rename_column_indexes(table_name, column_name, new_column_name)
         end
 
+        def add_index(table_name, column_name, options = {}) #:nodoc:
+          if options.is_a?(Hash) && options[:using]
+            index_name, index_type, index_columns, index_options = add_index_options(table_name, column_name, options)
+            execute "CREATE #{index_type} INDEX #{quote_column_name(index_name)} ON #{quote_table_name(table_name)} USING #{options[:using]} (#{index_columns})#{index_options}"
+          else
+             super
+          end
+        end
+
         def remove_index!(table_name, index_name) #:nodoc:
           execute "DROP INDEX #{quote_table_name(index_name)}"
         end