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Re: [EP-tech] Search results sorting by compound field elements

You can define a function that returns an ordervalue on any metadata field.  It'll look like this:

....
{
name => 'foo',
type => 'name',
multiple => 0,
make_value_orderkey => 'my_order_function'
}
...


$c->{my_order_function} = sub
{
my ($field, $value, $session, $langid, $dataset) = @_;

$familyname = $value->{family};
return md5($family);
}

Note that this is hazy, from memory and just typed straight into the email.  Also, don't forget to regenerate the order values (I believe it's an epadmin command).

Jisc

Adam Field
SHERPA services analyst developer

From: <eprints-tech-bounces@ecs.soton.ac.uk> on behalf of "Alan.Stiles" <alan.stiles@open.ac.uk>
Reply-To: "eprints-tech@ecs.soton.ac.uk" <eprints-tech@ecs.soton.ac.uk>
Date: Wednesday, 20 April 2016 16:01
To: "eprints-tech@ecs.soton.ac.uk" <eprints-tech@ecs.soton.ac.uk>
Subject: Re: [EP-tech] Search results sorting by compound field elements

Half-answering my own question:

 

my %options = ("custom_order" => "name");

my $list = $ds->search(%options);

 

actually does what I want, but doesn’t resolve the larger question of sorting by sub-fields – e.g. if I wanted to sort the list by given name rather than family name…

 

 

From: eprints-tech-bounces@ecs.soton.ac.uk [mailto:eprints-tech-bounces@ecs.soton.ac.uk] On Behalf Of Alan.Stiles
Sent: 20 April 2016 15:28
To: eprints-tech@ecs.soton.ac.uk
Subject: [EP-tech] Search results sorting by compound field elements

 

Hi all,

Anyone got a clue how to format the ‘custom_order’ parameter of a dataset search query to sort by sub-fields of a compound field?

 

i.e. – running a search over the ‘user’ dataset and I want to sort the results by name_family then name_given of the compound ‘name’ field.

 

Currently running (based on the search method from http://wiki.eprints.org/w/API:EPrints/DataSet#Object_Methods ):

 

$list = $ds->search( {“custom_order” => “name_given/name_family” };

 

But it doesn’t seem to be sorting the list at all

 

Thanks,

 

Alan

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