[Dbix-class] ResultSet->search + prefetch

[Ryan VanderBijl]

It seems to me that a search with prefetch does not take into
consideration the extra attributes specified in the prefetched
relationships' attributes.

My device class defines its relationships like this:
    __PACKAGE__->might_have(                        
        "current_name_object",
        "myapp::Model::db::IcDevName",
        { "foreign.dev_id" => "self.dev_id" },
        { "where" => { "me.finished_date" => undef } },
    );                                                 
    __PACKAGE__->might_have(
        "current_position",
        "myapp::Model::db::IcDevCurrentPosition",
        { "foreign.dev_id" => "self.dev_id" },
        { "prefetch" => [ "description_object" ] }
    );                                            

Then using these relationships does what I expect: it only returns a
name_object where the finished_date is null, and getting the
current_position prefetches the descrition_object (checked with
DBIX_CLASS_STORAGE_DBI_DEBUG=1).


If I do a search:
   my $rs = $schema->resultset("Device")->search(
               { account  => 1 },
               { prefetch =>
                   [ qw/current_name_object current_position/ ]}
   );

I get the wrong results. Using DBIX_CLASS_STORAGE_DBI_DEBUG=1, I
see that my current_name_object's WHERE clause is not included,
nor is my description_object prefetched.

The work-around for the missing prefetch isn't too bad:
    prefetch => [ "current_name_object", { "current_position" =>
                    "description_object"} ]

But I don't like manually adding another search/filter parameter.  Any
suggestions?

Thanks!

-Ryan
-- 
Ryan VanderBijl   |   http://vbijl.net/~ryan/