What documentation are you looking at John?  Think I’m fighting with the parameters on ‘create’.  When I try the following code:

 

#!/usr/bin/perl -w -I/opt/eprints3/perl_lib

use strict;

use EPrints;

 

my $ep = EPrints->new();

my $repository = $ep->repository( "repoid" );

 

my $tech_item = EPrints::DataObj::Subject->create($repository, "new_item_id",[{"name"=>"New Item Description"}],["parentid"],1);

 

 

I get an error message

Can't use string ("EPrints::DataObj::Subject") as a HASH ref while "strict refs" in use at /opt/eprints3/perl_lib/EPrints/DataObj.pm line 968.

 

 

Within ‘create_child’ it uses $self->{subjectid} as the value for parentid, but from debugging it looks like the value is actually in $self->{data}->{subjectid}  not sure if this is me not understanding something about eprints  structure or a possible bug?

 

The subjects don’t seem to need commit() to add them (at least via create_child – I had it in the code originally but it didn’t seem to make a difference) and reindexing the subject dataset hasn’t done anything.  Thanks for the ideas though.

 

Alan

 

 

 

No experience – but looking at the documentation, you could possibly achieve what you need with the ‘create’ method instead?

 

Other thoughts are:

- does anything change when you commit() the new subject?

- does reindexing the subjects change anything?

 

Cheers,

John

 

 

Hi all,

Anyone have any experience with updating the subject tree via the API?   (using 3.3.10 but current github module for EPrints::DataObj::Subject looks similar)

 

I’m trying to add a new top level entry with the following code snippet…

 

                my $rootsubj = EPrints::DataObj::Subject->new($repository,"ROOT");

                exit unless defined($rootsubj);

                my $newsubj = $rootsubj->create_child("newid",[{name=>"New Top Level Subject"}],0);

 

It creates the subject, but orphaned rather than linked to the ROOT object as I’d expect…

Any clues?

 

Alan Stiles

Digital Repository Developer

Library Services, The Open University

 

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