X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FResultSource.pm;h=3233e3ab4a1b45d8cd0883e6881e5e6666551e35;hb=7027fcdb42f20465bd1155f7dbc503d21b342ca8;hp=7906a12e61945ed40d22a0b8f8295125f06a1b7c;hpb=ad295412b69d88e4bf51daa6b22d048d7e8560e5;p=dbsrgits%2FDBIx-Class.git

diff --git a/lib/DBIx/Class/ResultSource.pm b/lib/DBIx/Class/ResultSource.pm
index 7906a12..3233e3a 100644
--- a/lib/DBIx/Class/ResultSource.pm
+++ b/lib/DBIx/Class/ResultSource.pm
@@ -627,7 +627,7 @@ sub primary_columns {
 # a helper method that will automatically die with a descriptive message if
 # no pk is defined on the source in question. For internal use to save
 # on if @pks... boilerplate
-sub _pri_cols {
+sub _pri_cols_or_die {
   my $self = shift;
   my @pcols = $self->primary_columns
     or $self->throw_exception (sprintf(
@@ -638,6 +638,20 @@ sub _pri_cols {
   return @pcols;
 }
 
+# same as above but mandating single-column PK (used by relationship condition
+# inferrence)
+sub _single_pri_col_or_die {
+  my $self = shift;
+  my ($pri, @too_many) = $self->_pri_cols_or_die;
+
+  $self->throw_exception( sprintf(
+    "Operation requires a single-column primary key declared on '%s'",
+    $self->source_name || $self->result_class || $self->name || 'Unknown source...?',
+  )) if @too_many;
+  return $pri;
+}
+
+
 =head2 sequence
 
 Manually define the correct sequence for your table, to avoid the overhead
@@ -1664,7 +1678,7 @@ our $UNRESOLVABLE_CONDITION = \ '1 = 0';
 
 # Resolves the passed condition to a concrete query fragment and a flag
 # indicating whether this is a cross-table condition. Also an optional
-# list of non-triviail values (notmally conditions) returned as a part
+# list of non-trivial values (normally conditions) returned as a part
 # of a joinfree condition hash
 sub _resolve_condition {
   my ($self, $cond, $as, $for, $rel_name) = @_;