use base qw/DBIx::Class::Schema/;
In this class you load your result_source ("table", "model") classes, which we
-will define later, using the load_classes() method. You can specify which
-classes to load manually:
+will define later, using the load_namespaces() method:
- # load My::Schema::Album and My::Schema::Artist
- __PACKAGE__->load_classes(qw/ Album Artist /);
+ # load My::Schema::Result::* and their resultset classes
+ __PACKAGE__->load_namespaces();
-Or load classes by namespace:
+By default this loads all the Result (Row) classes in the
+My::Schema::Result:: namespace, and also any resultset classes in the
+My::Schema::ResultSet:: namespace (if missing, the resultsets are
+defaulted to be DBIx::Class::ResultSet objects). You can change the
+result and resultset namespaces by using options to the
+L<DBIx::Class::Schema/load_namespaces> call.
- # load My::Schema::Album, My::Schema::Artist and My::OtherSchema::LinerNotes
- __PACKAGE__->load_classes(
- {
- 'My::Schema' => [qw/ Album Artist /],
- 'My::OtherSchema' => [qw/ LinerNotes /]
- }
- );
-
-Or let your schema class load all classes in its namespace automatically:
-
- # load My::Schema::*
- __PACKAGE__->load_classes();
+It is also possible to do the same things manually by calling
+C<load_classes> for the Row classes and defining in those classes any
+required resultset classes.
Next, create each of the classes you want to load as specified above:
- package My::Schema::Album;
+ package My::Schema::Result::Album;
use base qw/DBIx::Class/;
Load any components required by each class with the load_components() method.
See L<DBIx::Class::ResultSource> for more details of the possible column
attributes.
-Accessors are created for each column automatically, so My::Schema::Album will
+Accessors are created for each column automatically, so My::Schema::Result::Album will
have albumid() (or album(), when using the accessor), artist() and title()
methods.
make a predefined accessor for fetching objects that contain this Table's
foreign key:
- __PACKAGE__->has_many('albums', 'My::Schema::Artist', 'album_id');
+ __PACKAGE__->has_many('albums', 'My::Schema::Result::Artist', 'album_id');
See L<DBIx::Class::Relationship> for more information about the various types of
available relationships and how you can design your own.
my $album = $schema->resultset('Album')->find(14);
This will run a C<SELECT> with C<albumid = 14> in the C<WHERE> clause, and
-return an instance of C<My::Schema::Album> that represents this row. Once you
+return an instance of C<My::Schema::Result::Album> that represents this row. Once you
have that row, you can access and update columns:
$album->title('Physical Graffiti');
=head2 Adding and removing rows
To create a new record in the database, you can use the C<create> method. It
-returns an instance of C<My::Schema::Album> that can be used to access the data
+returns an instance of C<My::Schema::Result::Album> that can be used to access the data
in the new record:
my $new_album = $schema->resultset('Album')->create({
=head2 Problems on RHEL5/CentOS5
-There is a problem with slow performance of certain DBIx::Class operations in
-perl-5.8.8-10 and later on RedHat and related systems, due to a bad backport of
-a "use overload" related bug. The problem is in the Perl binary itself, not in
-DBIx::Class. If your system has this problem, you will see a warning on
-startup, with some options as to what to do about it.
+There is a problem with slow performance of certain DBIx::Class
+operations in perl-5.8.8-10 and later on RedHat and related systems, due
+to a bad backport of a "use overload" related bug. The problem is in the
+Perl binary itself, not in DBIx::Class. If your system might suffer this
+problem, you will see a warning on startup, with some options as to what
+to do about it. This problem was eliminated in the perl-5.8.8-15.el5_2.1
+package which was issued in September 2008.
=head1 SEE ALSO