Retrieving the URL of Site Pages Where Items Are Published in the Omeka S OaiPmh Repository Module

Overview

This is a personal note on how to retrieve the URL of site pages where items are published in the Omeka S OaiPmh Repository module.

Background

The following article introduces how to create custom vocabularies using OaiPmhRepository.

https://nakamura196.hatenablog.com/entry/2021/07/25/222651

Please refer to it as well.

Retrieving the URL of Site Pages Where Items Are Published

Before Fix

In a certain customization case, the site page URL was retrieved as follows. This does not work properly when something other than dcterms:identifier is configured in the Clean URL module. Additionally, hardcoded paths like /s/db/record/ can be seen.

if ( $item->value( "dcterms:identifier" ) ) {
    $this->appendNewElement($oai, 'curation:relation', self::prefix."/s/db/record/".(string)$item->value("dcterms:identifier")->value());
}

After Fix

It was possible to write it more simply as follows. This also handles cases where the item is published on multiple sites.

$sites = $item->sites();
foreach ($sites as $key => $site) {
    $siteSlug = $site->slug();
    $this->appendNewElement($oai, 'curation:relation', $item->siteUrl($siteSlug, true));
}

Summary

I hope this serves as a useful reference for building an OAI-PMH repository with Omeka S.