Need basic help with PDbTemplate class

I’m new to the whole php/css world (yeah, sorry) so I’m working my way through this. Love the plugin so far I just need some help going forward.

My Participants database has three “types” of participants: venues, troupes, performers

– I created separate groups for the type-specific fields and a common group for the common fields.
– My submission_type field captures the page slug of the sign-on page used

I have three list pages that use the php_list shortcode using groups= and some filtering to get the results that I want.

** All is working up to this point **

GOAL:
On each list page I want to click a field (‘ld_name’ is a common field) and have it display a single record page…. with that single record only displaying the appropriate groups for its submission_type.

SO FAR:
I created a copy of pdb-single-default.php and put it in the templates folder of my current WP template, renaming it pdb-single-performer.php.

I edited the exclude statement so that it excludes the venue and troupe fields.

Yay, all this works. For *performers*…

PDBTEMPLATE CLASS ISSUES:
I assume the answer lies with the PDbTemplate class and using the Switch/Case structure (??) to set up each single record response the way I want it to display.

BUT… I ran into problems right away so I kept cutting my file down further and further.

At this point I have a VERY simple pdb-single-submission.php file in my templates folder only it isn’t returning anything.

I am VERY new to all of this, so I’m guessing I am missing something really basic.

<?php
/*
 * template for displaying a single record using IBinfo data
 *
 * single record template
 */

// get the template object for this record
$this_submission = new PDb_Template($this);
?>

<h1>
  <?php $this_submission->print_field('ld_name') ?>
</h1>

That’s the extent of my file…

I appreciate assistance.

https://ww.wp.xz.cn/plugins/participants-database/