From 52b420301965efe58a60672832c93b5046695cd0 Mon Sep 17 00:00:00 2001
From: Michael Orlitzky <michael@orlitzky.com>
Date: Fri, 2 Jan 2015 13:39:27 -0500
Subject: [PATCH] Use Generics.prepend in TSN.XML.AutoRacingSchedule.

---
 src/TSN/XML/AutoRacingSchedule.hs | 53 +++++++++++++++----------------
 1 file changed, 26 insertions(+), 27 deletions(-)

diff --git a/src/TSN/XML/AutoRacingSchedule.hs b/src/TSN/XML/AutoRacingSchedule.hs
index d4a726b..1cbcbc1 100644
--- a/src/TSN/XML/AutoRacingSchedule.hs
+++ b/src/TSN/XML/AutoRacingSchedule.hs
@@ -1,3 +1,4 @@
+
 {-# LANGUAGE DeriveDataTypeable #-}
 {-# LANGUAGE DeriveGeneric #-}
 {-# LANGUAGE FlexibleInstances #-}
@@ -55,7 +56,7 @@ import Text.XML.HXT.Core (
   xpWrap )
 
 -- Local imports.
-import Generics ( Generic(..), to_tuple )
+import Generics ( Generic(..), prepend, to_tuple )
 import TSN.Codegen (
   tsn_codegen_config )
 import TSN.DbImport ( DbImport(..), ImportResult(..), run_dbmigrate )
@@ -266,33 +267,40 @@ newtype AutoRacingScheduleListingRaceResult =
 
 -- | Database representation of \<RaceResultListing\> within
 --   \<RaceResults\> within \<Listing\> within... \<message\>!
+--   The leading underscores prevent unused field warnings.
 --
 data AutoRacingScheduleListingRaceResultRaceResultListing =
   AutoRacingScheduleListingRaceResultRaceResultListing {
-    db_auto_racing_schedules_listings_id ::
+    _db_auto_racing_schedules_listings_id ::
       DefaultKey AutoRacingScheduleListing,
-    db_finish_position :: Int,
-    db_driver_id :: Int,
-    db_name :: String,
-    db_leading_laps :: Int,
-    db_listing_laps :: Int, -- ^ Avoid clash with race's \"laps\" field.
-    db_earnings :: String,  -- ^ This should be an Int, but can have commas.
-    db_status :: Maybe String -- ^ They can be empty
+    _db_finish_position :: Int,
+    _db_driver_id :: Int,
+    _db_name :: String,
+    _db_leading_laps :: Int,
+    _db_listing_laps :: Int, -- ^ Avoid clash with race's \"laps\" field.
+    _db_earnings :: String,  -- ^ This should be an Int, but can have commas.
+    _db_status :: Maybe String -- ^ They can be empty
     }
+  deriving ( GHC.Generic )
+
+-- | For 'Generics.prepend'.
+--
+instance Generic AutoRacingScheduleListingRaceResultRaceResultListing
 
 
 -- | XML Representation of an
 --   'AutoRacingScheduleListingRaceResultRaceResultListing'.
+--   The leading underscores prevent unused field warnings.
 --
 data AutoRacingScheduleListingRaceResultRaceResultListingXml =
   AutoRacingScheduleListingRaceResultRaceResultListingXml {
-    xml_finish_position :: Int,
-    xml_driver_id :: Int,
-    xml_name :: String,
-    xml_leading_laps :: Int,
-    xml_listing_laps :: Int, -- ^ Avoid clash with race's \"laps\" field.
-    xml_earnings :: String,  -- ^ Should be an 'Int', but can have commas.
-    xml_status :: Maybe String -- ^ They can be empty
+    _xml_finish_position :: Int,
+    _xml_driver_id :: Int,
+    _xml_name :: String,
+    _xml_leading_laps :: Int,
+    _xml_listing_laps :: Int, -- ^ Avoids clash with race's \"laps\" field.
+    _xml_earnings :: String,  -- ^ Should be an 'Int', but can have commas.
+    _xml_status :: Maybe String -- ^ They can be empty
     }
   deriving (Eq, GHC.Generic, Show)
 
@@ -326,16 +334,7 @@ instance FromXmlFk AutoRacingScheduleListingRaceResultRaceResultListingXml where
   --   'AutoRacingScheduleListingRaceResultRaceResultListing', we just
   --   add the foreign key to the parent 'AutoRacingScheduleListing'.
   --
-  from_xml_fk fk AutoRacingScheduleListingRaceResultRaceResultListingXml{..} =
-    AutoRacingScheduleListingRaceResultRaceResultListing {
-      db_auto_racing_schedules_listings_id = fk,
-      db_finish_position = xml_finish_position,
-      db_driver_id = xml_driver_id,
-      db_name = xml_name,
-      db_leading_laps = xml_leading_laps,
-      db_listing_laps = xml_listing_laps,
-      db_earnings = xml_earnings,
-      db_status = xml_status }
+  from_xml_fk = prepend
 
 
 -- | This allows us to insert the XML representation
@@ -397,7 +396,7 @@ mkPersist tsn_codegen_config [groundhog|
   constructors:
     - name: AutoRacingScheduleListingRaceResultRaceResultListing
       fields:
-        - name: db_auto_racing_schedules_listings_id
+        - name: _db_auto_racing_schedules_listings_id
           reference:
             onDelete: cascade
 |]
-- 
2.43.2