Use record id for fixture key id if exists

lib/tasks/extract_fixtures.rake

@@ -52,7 +52,8 @@ task :extract_fixtures => :environment do
     File.open(File.join(dir, "#{table_name}.yml"), 'w') do |file|
       columns = ActiveRecord::Base.connection.columns(table_name)
       column_names = columns.map(&:name)
-      order_columns = column_names.include?('id') ? 'id' : column_names.join(', ')
+      has_id_column = column_names.include?('id')
+      order_columns = has_id_column ? 'id' : column_names.join(', ')
       where_clause = table_filters.has_key?(table_name) ? "WHERE #{table_filters[table_name]}" : ''
       sql = "SELECT * FROM #{table_name} #{where_clause} ORDER BY #{order_columns}"
       data = ActiveRecord::Base.connection.select_all(sql)
@@ -70,7 +71,8 @@ task :extract_fixtures => :environment do
             end
           end
         end
-        hash["#{table_name}_#{i.succ!}"] = record
+        key_id = has_id_column ? sprintf('%03d', record['id']) : i.succ!
+        hash["#{table_name}_#{key_id}"] = record
         hash
       }.to_yaml
     end