X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/5449cf4adcc1fad4b9f43426e6d3e4a8f65e6fbb..d10931effaabdbdd063029394981a26893a47db5:/lib/migrate.rb

diff --git a/lib/migrate.rb b/lib/migrate.rb
index 392060b60..05b3c90f2 100644
--- a/lib/migrate.rb
+++ b/lib/migrate.rb
@@ -158,6 +158,21 @@ module ActiveRecord
       def interval_constant(interval)
         "'#{interval}'::interval"
       end
+
+      def add_index(table_name, column_name, options = {})
+        column_names = Array(column_name)
+        index_name   = index_name(table_name, :column => column_names)
+
+        if Hash === options # legacy support, since this param was a string
+          index_type = options[:unique] ? "UNIQUE" : ""
+          index_name = options[:name] || index_name
+          index_method = options[:method] || "BTREE"
+        else
+          index_type = options
+        end
+        quoted_column_names = column_names.map { |e| quote_column_name(e) }.join(", ")
+        execute "CREATE #{index_type} INDEX #{quote_column_name(index_name)} ON #{quote_table_name(table_name)} USING #{index_method} (#{quoted_column_names})"
+      end
     end
   end
 end