X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FRelationship%2FHasOne.pm;h=543649b5f571debc43801c5636b927d381c324fa;hb=d5d833d959dea814d49ea3d15010cb42ab6ee310;hp=d114a398497d98810ba76fd9c0786ca036bec2a6;hpb=103647d504eeadac7d179057e9f4d5eda0cd7c1b;p=dbsrgits%2FDBIx-Class.git

diff --git a/lib/DBIx/Class/Relationship/HasOne.pm b/lib/DBIx/Class/Relationship/HasOne.pm
index d114a39..543649b 100644
--- a/lib/DBIx/Class/Relationship/HasOne.pm
+++ b/lib/DBIx/Class/Relationship/HasOne.pm
@@ -1,4 +1,5 @@
-package DBIx::Class::Relationship::HasOne;
+package # hide from PAUSE
+    DBIx::Class::Relationship::HasOne;
 
 use strict;
 use warnings;
@@ -8,19 +9,27 @@ sub might_have {
 }
 
 sub has_one {
-  shift->_has_one(undef => @_);
+  shift->_has_one(undef() => @_);
 }
 
 sub _has_one {
   my ($class, $join_type, $rel, $f_class, $cond, $attrs) = @_;
-  eval "require $f_class";
   unless (ref $cond) {
+    $class->ensure_class_loaded($f_class);
     my ($pri, $too_many) = $class->primary_columns;
-    $class->throw( "might_have/has_one can only infer join for a single primary key; ${class} has more" )
-      if $too_many;
-    my $f_key;
+
+    $class->throw_exception(
+      "might_have/has_one can only infer join for a single primary key; ".
+      "${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 $guess;
+    my ($f_key,$guess);
     if (defined $cond && length $cond) {
       $f_key = $cond;
       $guess = "caller specified foreign key '$f_key'";
@@ -29,12 +38,15 @@ sub _has_one {
       $guess = "using given relationship '$rel' for foreign key";
     } else {
       ($f_key, $too_many) = $f_class->primary_columns;
-      $class->throw( "might_have/has_one can only infer join for a single primary key; ${f_class} has more" )
-        if $too_many;
+      $class->throw_exception(
+        "might_have/has_one can only infer join for a single primary key; ".
+        "${f_class} has more"
+      ) if $too_many;
       $guess = "using primary key of foreign class for foreign key";
     }
-    $class->throw("No such column ${f_key} on foreign class ${f_class} ($guess)")
-      if $f_class_loaded && !$f_class->has_column($f_key);
+    $class->throw_exception(
+      "No such column ${f_key} on foreign class ${f_class} ($guess)"
+    ) if $f_class_loaded && !$f_class->has_column($f_key);
     $cond = { "foreign.${f_key}" => "self.${pri}" };
   }
   $class->add_relationship($rel, $f_class,