-package DBIx::Class::Relationship::BelongsTo;
+package # hide from PAUSE
+ DBIx::Class::Relationship::BelongsTo;
+
+# Documentation for these methods can be found in
+# DBIx::Class::Relationship
use strict;
use warnings;
sub belongs_to {
my ($class, $rel, $f_class, $cond, $attrs) = @_;
- eval "require $f_class";
- if ($@) {
- $class->throw_exception($@) unless $@ =~ /Can't locate/;
- }
-
- my %f_primaries;
- $f_primaries{$_} = 1 for eval { $f_class->primary_columns };
- my $f_loaded = !$@;
-
- # single key relationship
+ $class->ensure_class_loaded($f_class);
+ # no join condition or just a column name
if (!ref $cond) {
+ my %f_primaries = map { $_ => 1 } eval { $f_class->primary_columns };
$class->throw_exception("Can't infer join condition for ${rel} on ${class}; unable to load ${f_class}")
- unless $f_loaded;
+ if $@;
my ($pri, $too_many) = keys %f_primaries;
$class->throw_exception("Can't infer join condition for ${rel} on ${class}; ${f_class} has no primary keys")
- unless defined $pri;
- $class->throw_exception("Can't infer join condition for ${rel} on ${class}; ${f_class} has multiple primary key")
- if $too_many;
+ unless defined $pri;
+ $class->throw_exception("Can't infer join condition for ${rel} on ${class}; ${f_class} has multiple primary keys")
+ if $too_many;
my $fk = defined $cond ? $cond : $rel;
$class->throw_exception("Can't infer join condition for ${rel} on ${class}; $fk is not a column")
{ accessor => $acc_type, %{$attrs || {}} }
);
}
- # multiple key relationship
+ # explicit join condition
elsif (ref $cond eq 'HASH') {
my $cond_rel;
for (keys %$cond) {