[Dbix-class] Issue when prefetching two level deep has_many relationships

[Nilson Santos Figueiredo Junior]

On 9/21/06, Nilson Santos Figueiredo Junior <acid06 at gmail.com> wrote:
> I further dove into the code and I've found exactly where the problem
> is inside the _collapse_result() method. The following check should
> fail, however it succeeds:
>
>     while (
>       !(
>         grep {
>           !defined($tree->[0]->{$_}) || $co_check{$_} ne $tree->[0]->{$_}
>         } @co_key
>         )
>     ) { ... }

No wonder it always succeeds, %co_check is defined as:

my %co_check = map { ($_, $tree->[0]->{$_}); } @co_key;

I think this probably means more than one level deep has_many
relationships are really broken. In an A has_many B has_many C
situation, whenever you've got a B that doesn't have any C's, the
following B rows will magically disappear from your resultset.

I honestly have no clue on how to fix it, hopefully someone else does.
I think I've already provided the best information I could on this
issue. This only affects prefetched has_many relationships.

-Nilson Santos F. Jr.