To show only the products in your Backpack store which have inventory greater than zero, you can use a filter on the "Product" model in your backpack's product controller.
Here's an example code snippet that you can add to your product controller:
public function index()
$this->crud->addClause('where', 'inventory', '>', 0);
This code will filter out all products with an inventory of zero or less, and only display products with an inventory greater than zero.
However, keep in mind that this will only affect the products displayed on the listing page. If a customer clicks on a product that has a variant with zero inventory, they may still be able to see that variant on the product page.
To prevent this, you can modify your product page template to only display variants with inventory greater than zero. You can do this by adding an additional filter to the variant loop in your product view template:
@foreach($product->variants->where('inventory', '>', 0) as $variant)
// display variant information here
This code will only display variants with inventory greater than zero on the product page.