From: ostmann <ostmann@sadraksaemp.intern4.websuche.de>
Date: Mon, 10 Jan 2011 10:56:49 +0000 (+0100)
Subject: Fix losing order of columns provided in select/as
X-Git-Tag: v0.08127~27
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=dc81dba3b6a3675dcc003be84fbaad2f0df7d6a2;p=dbsrgits%2FDBIx-Class.git

Fix losing order of columns provided in select/as
---

diff --git a/Changes b/Changes
index be15c28..b250b33 100644
--- a/Changes
+++ b/Changes
@@ -2,7 +2,9 @@ Revision history for DBIx::Class
 
     * Fixes
         - Revert default selection to being lazy again (eagerness introduced
-          in 0.08126) - fixes DBIx::Class::Helper::ResultSet::RemoveColumns
+          in 0.08125) - fixes DBIx::Class::Helper::ResultSet::RemoveColumns
+        - Fix losing order of columns provided in select/as (regression from
+          0.08125)
         - Unaliased "dark" selectors no longer throw off prefetch
         - Fix proper composition of bind values across all possible
           SQL areas ( group_by => \[ ... ] now works properly )
diff --git a/lib/DBIx/Class.pm b/lib/DBIx/Class.pm
index 979b653..cf95368 100644
--- a/lib/DBIx/Class.pm
+++ b/lib/DBIx/Class.pm
@@ -386,6 +386,8 @@ robkinyon: Rob Kinyon <rkinyon@cpan.org>
 
 Roman: Roman Filippov <romanf@cpan.org>
 
+Sadrak: Felix Antonius Wilhelm Ostmann <sadrak@cpan.org>
+
 sc_: Just Another Perl Hacker
 
 scotty: Scotty Allen <scotty@scottyallen.com>
diff --git a/lib/DBIx/Class/ResultSet.pm b/lib/DBIx/Class/ResultSet.pm
index 5da7f9a..0793e05 100644
--- a/lib/DBIx/Class/ResultSet.pm
+++ b/lib/DBIx/Class/ResultSet.pm
@@ -526,7 +526,7 @@ sub _normalize_selection {
       # if balanced - treat as a columns entry
       $attrs->{"${pref}columns"} = $self->_merge_attr(
         $attrs->{"${pref}columns"},
-        { map { $as->[$_] => $sel->[$_] } ( 0 .. $#$as ) }
+        [ map { +{ $as->[$_] => $sel->[$_] } } ( 0 .. $#$as ) ]
       );
     }
     else {
@@ -3235,18 +3235,18 @@ sub _resolved_attrs {
 
   # disassemble columns
   my (@sel, @as);
-  for my $c (@{
-    ref $attrs->{columns} eq 'ARRAY' ? $attrs->{columns} : [ $attrs->{columns} || () ]
-  }) {
-    if (ref $c eq 'HASH') {
-      for my $as (keys %$c) {
-        push @sel, $c->{$as};
-        push @as, $as;
+  if (my $cols = delete $attrs->{columns}) {
+    for my $c (ref $cols eq 'ARRAY' ? @$cols : $cols) {
+      if (ref $c eq 'HASH') {
+        for my $as (keys %$c) {
+          push @sel, $c->{$as};
+          push @as, $as;
+        }
+      }
+      else {
+        push @sel, $c;
+        push @as, $c;
       }
-    }
-    else {
-      push @sel, $c;
-      push @as, $c;
     }
   }
 
diff --git a/t/count/count_rs.t b/t/count/count_rs.t
index a5e4098..30ca0ca 100644
--- a/t/count/count_rs.t
+++ b/t/count/count_rs.t
@@ -133,7 +133,7 @@ my $schema = DBICTest->init_schema();
     $crs->as_query,
     '(SELECT COUNT( * )
       FROM (
-        SELECT MAX( cds.year ) AS newest_cd_year, me.artistid
+        SELECT me.artistid, MAX( cds.year ) AS newest_cd_year,
           FROM artist me 
           LEFT JOIN cd cds ON cds.artist = me.artistid 
         GROUP BY me.artistid 
diff --git a/t/prefetch/grouped.t b/t/prefetch/grouped.t
index 2f43e03..d0b8e6c 100644
--- a/t/prefetch/grouped.t
+++ b/t/prefetch/grouped.t
@@ -160,11 +160,11 @@ for ($cd_rs->all) {
   is_same_sql_bind (
     $most_tracks_rs->as_query,
     '(
-      SELECT  me.maxtr, me.cdid, me.track_count,
+      SELECT  me.cdid, me.track_count, me.maxtr,
               tracks.trackid, tracks.cd, tracks.position, tracks.title, tracks.last_updated_on, tracks.last_updated_at,
               liner_notes.liner_id, liner_notes.notes
         FROM (
-          SELECT MAX( tracks.trackid ) AS maxtr, me.cdid, COUNT( tracks.trackid ) AS track_count,
+          SELECT me.cdid, COUNT( tracks.trackid ) AS track_count, MAX( tracks.trackid ) AS maxtr
             FROM cd me
             LEFT JOIN track tracks ON tracks.cd = me.cdid
           WHERE ( me.cdid IS NOT NULL )
diff --git a/t/search/select_chains.t b/t/search/select_chains.t
index 234439d..e039fb7 100644
--- a/t/search/select_chains.t
+++ b/t/search/select_chains.t
@@ -121,4 +121,20 @@ is_same_sql_bind (
   'Correct chaining before attr resolution'
 );
 
+# Test the order of columns
+$rs = $schema->resultset('CD')->search ({}, {
+  'select'   => [ 'me.cdid', 'me.title' ],
+});
+
+is_same_sql_bind (
+  $rs->as_query,
+  '( SELECT
+      me.cdid,
+      me.title
+      FROM cd me
+  )',
+  [],
+  'Correct order of selected columns'
+);
+
 done_testing;