foreach my $pre (keys %{$prefetch||{}}) {
- my $pre_source = $source->related_source($pre)
- or $class->throw_exception("Can't prefetch non-existent relationship ${pre}");
-
- my $accessor = $source->relationship_info($pre)->{attrs}{accessor}
- or $class->throw_exception("No accessor for prefetched $pre");
-
- my @pre_vals;
+ my (@pre_vals, $is_multi);
if (ref $prefetch->{$pre}[0] eq 'ARRAY') {
+ $is_multi = 1;
@pre_vals = @{$prefetch->{$pre}};
}
- elsif ($accessor eq 'multi') {
- $class->throw_exception("Implicit prefetch (via select/columns) not supported with accessor 'multi'");
- }
else {
@pre_vals = $prefetch->{$pre};
}
+ my $pre_source = try {
+ $source->related_source($pre)
+ }
+ catch {
+ $class->throw_exception(sprintf
+
+ "Can't inflate manual prefetch into non-existent relationship '%s' from '%s', "
+ . "check the inflation specification (columns/as) ending in '%s.%s'.",
+
+ $pre,
+ $source->source_name,
+ $pre,
+ (keys %{$pre_vals[0][0]})[0] || 'something.something...',
+ );
+ };
+
+ my $accessor = $source->relationship_info($pre)->{attrs}{accessor}
+ or $class->throw_exception("No accessor type declared for prefetched $pre");
+
+ if (! $is_multi and $accessor eq 'multi') {
+ $class->throw_exception("Manual prefetch (via select/columns) not supported with accessor 'multi'");
+ }
+
my @pre_objects;
for my $me_pref (@pre_vals) {