Hi,
our customer is using Liferay DXP 2023.q4.4 and has an ftl template,
which renders an image using component.documentUpload.getData()
They we found out that the "getData()" method is served by
Java method com.liferay.portlet.documentlibrary.util.getPreviewURL
The generated URL is absolute, that means it starts with https://domain.com/
The issue is now, that, if caching is enabled for the web content
template, the URL will be cached with full domain name. Since the
Liferay instance serves two domains - one for internal use within the
customer's network, allowing access to the Liferay admin UI, and one
for access from the public internet - wrong URL names are being
delivered. This way, the html that is delivered to public users
contains URLs that point into the internal network, and cannot be resolved.
In order to fix this situation and keep caching enabled, I am asking
you to:
Please make it possible to easily retrieve relative URLs for
document library assets from within .ftl templates
As an alternative (which is not preferred by the customer), I could
imagine that adding the requested host name to the cache key would do
the job.
Best,
Tobias
