CREATE TABLE cd (
cdid INTEGER PRIMARY KEY,
- artist INTEGER NOT NULL REFERENCES artist(id)
+ artist INTEGER NOT NULL REFERENCES artist(artistid),
title TEXT NOT NULL);
CREATE TABLE track (
trackid INTEGER PRIMARY KEY,
- cd INTEGER NOT NULL REFERENCES cd(id),
+ cd INTEGER NOT NULL REFERENCES cd(cdid),
title TEXT NOT NULL) ;
and create the sqlite database file:
package DB::Main;
use base qw/DBIx::Class::Schema/;
- __PACKAGE__->load_classes(qw/Artist CD Track/);
+ __PACKAGE__->load_classes(qw/Artist Cd Track/);
1;
__PACKAGE__->table('artist');
__PACKAGE__->add_columns(qw/ artistid name /);
__PACKAGE__->set_primary_key('artistid');
- __PACKAGE__->has_many('cds' => 'DB::Main::CD');
+ __PACKAGE__->has_many('cds' => 'DB::Main::Cd');
1;
-DB/Main/CD.pm:
+DB/Main/Cd.pm:
- package DB::Main::CD;
+ package DB::Main::Cd;
use base qw/DBIx::Class/;
__PACKAGE__->load_components(qw/Core/);
__PACKAGE__->table('cd');
__PACKAGE__->table('track');
__PACKAGE__->add_columns(qw/ trackid cd title/);
__PACKAGE__->set_primary_key('trackid');
- __PACKAGE__->belongs_to('cd' => 'DB::Main::CD');
+ __PACKAGE__->belongs_to('cd' => 'DB::Main::Cd');
1;
use DB::Main;
use strict;
- my $schema = DB::Main->connect('dbi:SQLite:dbic_test.db');
+ my $schema = DB::Main->connect('dbi:SQLite:example.db');
# here's some of the sql that is going to be generated by the schema
# INSERT INTO artist VALUES (NULL,'Michael Jackson');
push @cds, [$lp, $artist->first];
}
- $schema->populate('CD', [
+ $schema->populate('Cd', [
[qw/title artist/],
@cds,
]);
my @tracks;
foreach my $track (keys %tracks) {
- my $cdname = $schema->resultset('CD')->search({
+ my $cdname = $schema->resultset('Cd')->search({
title => $tracks{$track},
});
push @tracks, [$cdname->first, $track];
use DB::Main;
use strict;
- my $schema = DB::Main->connect('dbi:mysql:cdtestdb', 'testuser', 'testpass');
+ my $schema = DB::Main->connect('dbi:SQLite:example.db');
get_tracks_by_cd('Bad');
get_tracks_by_artist('Michael Jackson');
sub get_cd_by_track {
my $tracktitle = shift;
print "get_cd_by_track($tracktitle):\n";
- my $rs = $schema->resultset('CD')->search(
+ my $rs = $schema->resultset('Cd')->search(
{
'tracks.title' => $tracktitle
},
sub get_cds_by_artist {
my $artistname = shift;
print "get_cds_by_artist($artistname):\n";
- my $rs = $schema->resultset('CD')->search(
+ my $rs = $schema->resultset('Cd')->search(
{
'artist.name' => $artistname
},