unless (ref $cond) {
$class->ensure_class_loaded($f_class);
- my $pri = $class->_get_primary_key;
-
- $class->throw_exception(
- "might_have/has_one needs a primary key to infer a join; ".
- "${class} has none"
- ) if !defined $pri && (!defined $cond || !length $cond);
+ my $pri = $class->result_source_instance->_single_pri_col_or_die;
my $f_class_loaded = try { $f_class->columns };
- my ($f_key,$too_many,$guess);
+ my ($f_key,$guess);
if (defined $cond && length $cond) {
$f_key = $cond;
$guess = "caller specified foreign key '$f_key'";
} elsif ($f_class_loaded && $f_class->has_column($rel)) {
$f_key = $rel;
- $guess = "using given relationship '$rel' for foreign key";
- } else {
- $f_key = $class->_get_primary_key($f_class);
+ $guess = "using given relationship name '$rel' as foreign key column name";
+ } elsif ($f_class_loaded and my $f_pri = try {
+ $f_class->result_source_instance->_single_pri_col_or_die
+ }) {
+ $f_key = $f_pri;
$guess = "using primary key of foreign class for foreign key";
}
+
$class->throw_exception(
"No such column '$f_key' on foreign class ${f_class} ($guess)"
) if $f_class_loaded && !$f_class->has_column($f_key);
+
$cond = { "foreign.${f_key}" => "self.${pri}" };
}
$class->_validate_has_one_condition($cond);
1;
}
-sub _get_primary_key {
- my ( $class, $target_class ) = @_;
- $target_class ||= $class;
- my ($pri, $too_many) = try { $target_class->_pri_cols }
- catch {
- $class->throw_exception("Can't infer join condition on ${target_class}: $_");
- };
-
- $class->throw_exception(
- "might_have/has_one can only infer join for a single primary key; ".
- "${class} has more"
- ) if $too_many;
- return $pri;
-}
-
sub _validate_has_one_condition {
my ($class, $cond ) = @_;