file:templates\squick\html\com_sellacious\products\default.php

I need to add a front-end filter parameter to the product display to allow it to traverse the display.

But I don't know where the data sources are. $this.item How to query the database and add filters.

How I added a field to the data source in figure 2. I added a field to the _sellacious_products table, why it is not shown in the foreground print.