Custom index type support with :using.

1 files changed, 10 insertions, 0 deletions

diff --git a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
index b1baf24cb6..1f111a0976 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
@@ -432,6 +432,7 @@ module ActiveRecord
               next if row[:Key_name] == 'PRIMARY' # skip the primary key
               current_index = row[:Key_name]
               indexes << IndexDefinition.new(row[:Table], row[:Key_name], row[:Non_unique].to_i == 0, [], [])
+              indexes.last.using = row[:Index_type].downcase.to_sym
             end
 
             indexes.last.columns << row[:Column_name]
@@ -504,6 +505,15 @@ 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)} USING #{options[:using]} ON #{quote_table_name(table_name)} (#{index_columns})#{index_options}"
+        else
+          super
+        end
+      end
+
       # Maps logical Rails types to MySQL-specific data types.
       def type_to_sql(type, limit = nil, precision = nil, scale = nil)
         case type.to_s