Thank you for your quick reply, but it seems I was not clear in my previous message.
I am not having an issue with a standard Joomla Custom Field filter appearing in the JFilters backend. We know how to synchronize and use supported fields.
What we require is an example of a JFilters Plugin (a "Demo Plugin") that implements custom filtering logic. We need to create our own filter logic that goes beyond the standard custom field types supported by JFilters.
Specifically, we need to understand the development structure to:
Create a Joomla Plugin that integrates with and extends the JFilters component (i.e., implements the necessary JFilters interfaces/classes).
Handle the filter values submitted through the module, particularly ensuring these values are correctly available in the URL for the filtering process.
Do you have an official "Hello World" or "Demo Plugin" available that shows the minimal necessary code to create a functional custom filter plugin for JFilters?
Thank you for clarifying and providing a relevant code example or documentation.