X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FRelationship%2FHasOne.pm;h=4c910b8c667bc82e19c2404820fa0df663b0e114;hb=0e4fb877c0d647259a7b7f1f38f9dbe65b31cf6b;hp=568078ce3c503a93536ead74b311342741019fa1;hpb=fd4df97578076cdb1a82385b21995ed28637e096;p=dbsrgits%2FDBIx-Class.git

diff --git a/lib/DBIx/Class/Relationship/HasOne.pm b/lib/DBIx/Class/Relationship/HasOne.pm
index 568078c..4c910b8 100644
--- a/lib/DBIx/Class/Relationship/HasOne.pm
+++ b/lib/DBIx/Class/Relationship/HasOne.pm
@@ -4,6 +4,11 @@ package # hide from PAUSE
 use strict;
 use warnings;
 
+our %_pod_inherit_config = 
+  (
+   class_map => { 'DBIx::Class::Relationship::HasOne' => 'DBIx::Class::Relationship' }
+  );
+
 sub might_have {
   shift->_has_one('LEFT' => @_);
 }
@@ -17,10 +22,17 @@ sub _has_one {
   unless (ref $cond) {
     $class->ensure_class_loaded($f_class);
     my ($pri, $too_many) = $class->primary_columns;
+
     $class->throw_exception(
       "might_have/has_one can only infer join for a single primary key; ".
       "${class} has more"
     ) if $too_many;
+
+    $class->throw_exception(
+      "might_have/has_one needs a primary key  to infer a join; ".
+      "${class} has none"
+    ) if !defined $pri && (!defined $cond || !length $cond);
+
     my $f_class_loaded = eval { $f_class->columns };
     my ($f_key,$guess);
     if (defined $cond && length $cond) {