Initial work on helper methods for many_to_many relationships.

diff --git a/lib/DBIx/Class/Relationship/ManyToMany.pm b/lib/DBIx/Class/Relationship/ManyToMany.pm
index 387fc0b..8818a69 100644 (file)
--- a/lib/DBIx/Class/Relationship/ManyToMany.pm
+++ b/lib/DBIx/Class/Relationship/ManyToMany.pm
@@ -9,11 +9,34 @@ sub many_to_many {
   {
     no strict 'refs';
     no warnings 'redefine';
+
     *{"${class}::${meth}"} = sub {
       my $self = shift;
       my $attrs = @_ > 1 && ref $_[$#_] eq 'HASH' ? pop(@_) : {};
       $self->search_related($rel)->search_related($f_rel, @_ > 0 ? @_ : undef, { %{$rel_attrs||{}}, %$attrs });
     };
+
+    *{"${class}::add_to_${meth}"} = sub {
+      my( $self, $obj ) = @_;
+      my $vals = @_ > 2 && ref $_[$#_] eq 'HASH' ? pop(@_) : {};
+      return $self->search_related($rel)->create({
+        map { $_=>$self->get_column($_) } $self->primary_columns(),
+        map { $_=>$obj->get_column($_) } $obj->primary_columns(),
+        %$vals,
+      });
+    };
+
+    *{"${class}::remove_from_${meth}"} = sub {
+      my( $self, $obj ) = @_;
+      return $self->search_related(
+        $rel,
+        {
+            map { $_=>$self->get_column($_) } $self->primary_columns(),
+            map { $_=>$obj->get_column($_) } $obj->primary_columns(),
+        },
+      )->delete();
+    };
+
   }
 }