X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FResultSetManager.pm;h=46aa406bebb3009891cb8a275bd682684df78e2f;hb=096f421241;hp=258cc7cf762c03992fa1196833cf71d0b2a4b530;hpb=49354ee30ddd401e34070d845495aee220bd6574;p=dbsrgits%2FDBIx-Class.git

diff --git a/lib/DBIx/Class/ResultSetManager.pm b/lib/DBIx/Class/ResultSetManager.pm
index 258cc7c..46aa406 100644
--- a/lib/DBIx/Class/ResultSetManager.pm
+++ b/lib/DBIx/Class/ResultSetManager.pm
@@ -1,19 +1,83 @@
 package DBIx::Class::ResultSetManager;
 use strict;
+use warnings;
 use base 'DBIx::Class';
 use Class::Inspector;
 
-__PACKAGE__->mk_classdata($_) for qw/ base_resultset_class table_resultset_class_suffix /;
+=head1 NAME
+
+DBIx::Class::ResultSetManager - helpful methods for managing resultset
+classes (EXPERIMENTAL)
+
+=head1 SYNOPSIS
+
+  # in a table class
+  __PACKAGE__->load_components(qw/ResultSetManager Core/); # note order!
+  __PACKAGE__->load_resultset_components(qw/AlwaysRS/);
+
+  # will be removed from the table class and inserted into a
+  # table-specific resultset class
+  sub search_by_year_desc : ResultSet {
+    my $self = shift;
+    my $cond = shift;
+    my $attrs = shift || {};
+    $attrs->{order_by} = 'year DESC';
+    $self->search($cond, $attrs);
+  }
+
+  $rs = $schema->resultset('CD')->search_by_year_desc({ artist => 'Tool' });
+
+=head1 DESCRIPTION
+
+This package implements two useful features for customizing resultset
+classes.  C<load_resultset_components> loads components in addition to
+C<DBIx::Class::ResultSet> (or whatever you set as
+C<base_resultset_class>). Any methods tagged with the C<ResultSet>
+attribute will be moved into a table-specific resultset class (by
+default called C<Class::_resultset>, but configurable via
+C<table_resultset_class_suffix>).  Most of the magic is done when you
+call C<< __PACKAGE__->table >>.
+
+=cut
+
+__PACKAGE__->mk_classdata($_)
+  for qw/ base_resultset_class table_resultset_class_suffix /;
 __PACKAGE__->base_resultset_class('DBIx::Class::ResultSet');
 __PACKAGE__->table_resultset_class_suffix('::_resultset');
 
+=head2 table
+
+Stacks on top of the normal L<DBIx::Class> C<table> method.  Any
+methods tagged with the C<ResultSet> attribute will be moved into a
+table-specific resultset class (by default called
+C<Class::_resultset>, but configurable via
+C<table_resultset_class_suffix>).  The magic for this is done within
+this C<< __PACKAGE__->table >> call.
+
+=cut
+
 sub table {
     my ($self,@rest) = @_;
-    $self->next::method(@rest);
-    $self->_register_attributes;
-    $self->_register_resultset_class;
+    my $ret = $self->next::method(@rest);
+    if (@rest) {
+        $self->_register_attributes;
+        $self->_register_resultset_class;
+    }
+    return $ret;
 }
 
+=head2 load_resultset_components
+
+  # in a table class
+  __PACKAGE__->load_components(qw/ResultSetManager Core/); # note order!
+  __PACKAGE__->load_resultset_components(qw/AlwaysRS/);
+
+C<load_resultset_components> loads components in addition to
+C<DBIx::Class::ResultSet> (or whatever you set as
+C<base_resultset_class>).
+
+=cut
+
 sub load_resultset_components {
     my ($self,@comp) = @_;
     my $resultset_class = $self->_setup_resultset_class;
@@ -22,17 +86,17 @@ sub load_resultset_components {
 
 sub _register_attributes {
     my $self = shift;
-    return unless $self->can('_attr_cache');
-
     my $cache = $self->_attr_cache;
+    return if keys %$cache == 0;
+
     foreach my $meth (@{Class::Inspector->methods($self) || []}) {
         my $attrs = $cache->{$self->can($meth)};
         next unless $attrs;
-        if ($attrs->[0] eq 'resultset') {
+        if ($attrs->[0] eq 'ResultSet') {
             no strict 'refs';
             my $resultset_class = $self->_setup_resultset_class;
-            *{"$resultset_class\::$meth"} = *{"$self\::$meth"};
-            undef *{"$self\::$meth"};
+            *{"$resultset_class\::$meth"} = $self->can($meth);
+            delete ${"${self}::"}{$meth};
         }
     }
 }
@@ -52,10 +116,21 @@ sub _register_resultset_class {
     my $resultset_class = $self . $self->table_resultset_class_suffix;
     no strict 'refs';
     if (@{"$resultset_class\::ISA"}) {
-        $self->result_source_instance->resultset_class($resultset_class);        
+        $self->result_source_instance->resultset_class($resultset_class);
     } else {
-        $self->result_source_instance->resultset_class($self->base_resultset_class);        
+        $self->result_source_instance->resultset_class
+          ($self->base_resultset_class);
     }
 }
 
-1;
\ No newline at end of file
+1;
+
+=head1 AUTHORS
+
+David Kamholz <dkamholz@cpan.org>
+
+=head1 LICENSE
+
+You may distribute this code under the same terms as Perl itself.
+
+=cut