The database consists of the following:
table 'artist' with columns: artistid, name
- table 'cd' with columns: cdid, artist, title
+ table 'cd' with columns: cdid, artist, title, year
table 'track' with columns: trackid, cd, title
CREATE TABLE cd (
cdid INTEGER PRIMARY KEY,
artist INTEGER NOT NULL REFERENCES artist(artistid),
- title TEXT NOT NULL
+ title TEXT NOT NULL,
+ year TEXT
);
CREATE TABLE track (
title TEXT NOT NULL
);
-and create the sqlite database file:
+and create the SQLite database file:
sqlite3 example.db < example.sql
Now create some more directories:
- mkdir MyDatabase
- mkdir MyDatabase/Main
- mkdir MyDatabase/Main/Result
- mkdir MyDatabase/Main/ResultSet
+ mkdir MyApp
+ mkdir MyApp/Schema
+ mkdir MyApp/Schema/Result
+ mkdir MyApp/Schema/ResultSet
Then, create the following DBIx::Class::Schema classes:
-MyDatabase/Main.pm:
+MyApp/Schema.pm:
- package MyDatabase::Main;
+ package MyApp::Schema;
use base qw/DBIx::Class::Schema/;
__PACKAGE__->load_namespaces;
1;
-MyDatabase/Main/Result/Artist.pm:
+MyApp/Schema/Result/Artist.pm:
- package MyDatabase::Main::Result::Artist;
- use base qw/DBIx::Class/;
- __PACKAGE__->load_components(qw/Core/);
+ package MyApp::Schema::Result::Artist;
+ use base qw/DBIx::Class::Core/;
__PACKAGE__->table('artist');
__PACKAGE__->add_columns(qw/ artistid name /);
__PACKAGE__->set_primary_key('artistid');
- __PACKAGE__->has_many('cds' => 'MyDatabase::Main::Result::Cd');
+ __PACKAGE__->has_many('cds' => 'MyApp::Schema::Result::Cd');
1;
-MyDatabase/Main/Result/Cd.pm:
+MyApp/Schema/Result/Cd.pm:
- package MyDatabase::Main::Result::Cd;
- use base qw/DBIx::Class/;
- __PACKAGE__->load_components(qw/Core/);
+ package MyApp::Schema::Result::Cd;
+ use base qw/DBIx::Class::Core/;
+ __PACKAGE__->load_components(qw/InflateColumn::DateTime/);
__PACKAGE__->table('cd');
- __PACKAGE__->add_columns(qw/ cdid artist title/);
+ __PACKAGE__->add_columns(qw/ cdid artist title year/);
__PACKAGE__->set_primary_key('cdid');
- __PACKAGE__->belongs_to('artist' => 'MyDatabase::Main::Result::Artist');
- __PACKAGE__->has_many('tracks' => 'MyDatabase::Main::Result::Track');
+ __PACKAGE__->belongs_to('artist' => 'MyApp::Schema::Result::Artist');
+ __PACKAGE__->has_many('tracks' => 'MyApp::Schema::Result::Track');
1;
-MyDatabase/Main/Result/Track.pm:
+MyApp/Schema/Result/Track.pm:
- package MyDatabase::Main::Result::Track;
- use base qw/DBIx::Class/;
- __PACKAGE__->load_components(qw/Core/);
+ package MyApp::Schema::Result::Track;
+ use base qw/DBIx::Class::Core/;
__PACKAGE__->table('track');
- __PACKAGE__->add_columns(qw/ trackid cd title/);
+ __PACKAGE__->add_columns(qw/ trackid cd title /);
__PACKAGE__->set_primary_key('trackid');
- __PACKAGE__->belongs_to('cd' => 'MyDatabase::Main::Result::Cd');
+ __PACKAGE__->belongs_to('cd' => 'MyApp::Schema::Result::Cd');
1;
insertdb.pl
- #!/usr/bin/perl -w
+ #!/usr/bin/perl
- use MyDatabase::Main;
use strict;
+ use warnings;
- my $schema = MyDatabase::Main->connect('dbi:SQLite:db/example.db');
+ use MyApp::Schema;
- # here's some of the SQL that is going to be generated by the schema
- # INSERT INTO artist VALUES (NULL,'Michael Jackson');
- # INSERT INTO artist VALUES (NULL,'Eminem');
+ my $schema = MyApp::Schema->connect('dbi:SQLite:db/example.db');
my @artists = (['Michael Jackson'], ['Eminem']);
$schema->populate('Artist', [
testdb.pl:
- #!/usr/bin/perl -w
+ #!/usr/bin/perl
- use MyDatabase::Main;
use strict;
+ use warnings;
+
+ use MyApp::Schema;
- my $schema = MyDatabase::Main->connect('dbi:SQLite:db/example.db');
- # for other DSNs, e.g. MySql, see the perldoc for the relevant dbd
+ my $schema = MyApp::Schema->connect('dbi:SQLite:db/example.db');
+ # for other DSNs, e.g. MySQL, see the perldoc for the relevant dbd
# driver, e.g perldoc L<DBD::mysql>.
get_tracks_by_cd('Bad');
=head1 Notes
-A reference implentation of the database and scripts in this example
+A reference implementation of the database and scripts in this example
are available in the main distribution for DBIx::Class under the
-directory F<t/examples/Schema>.
+directory F<examples/Schema>.
With these scripts we're relying on @INC looking in the current
-working directory. You may want to add the MyDatabase namespaces to
+working directory. You may want to add the MyApp namespaces to
@INC in a different way when it comes to deployment.
The F<testdb.pl> script is an excellent start for testing your database
model.
This example uses L<DBIx::Class::Schema/load_namespaces> to load in the
-appropriate L<Row|DBIx::Class::Row> classes from the MyDatabase::Main::Result namespace,
-and any required resultset classes from the MyDatabase::Main::ResultSet
-namespace (although we created the directory in the directions above we
-did not add, or need to add, any resultset classes).
+appropriate L<Result|DBIx::Class::Manual::ResultClass> classes from the
+C<MyApp::Schema::Result> namespace, and any required
+L<ResultSet|DBIx::Class::ResultSet> classes from the
+C<MyApp::Schema::ResultSet> namespace (although we created the directory
+in the directions above we did not add, or need to add, any resultset
+classes).
+
+=head1 FURTHER QUESTIONS?
-=head1 TODO
+Check the list of L<additional DBIC resources|DBIx::Class/GETTING HELP/SUPPORT>.
-=head1 AUTHOR
+=head1 COPYRIGHT AND LICENSE
- sc_ from irc.perl.org#dbix-class
- Kieren Diment <kd@totaldatasolution.com>
- Nigel Metheringham <nigelm@cpan.org>
+This module is free software L<copyright|DBIx::Class/COPYRIGHT AND LICENSE>
+by the L<DBIx::Class (DBIC) authors|DBIx::Class/AUTHORS>. You can
+redistribute it and/or modify it under the same terms as the
+L<DBIx::Class library|DBIx::Class/COPYRIGHT AND LICENSE>.
=cut
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