variant and price

services/productService.go

@@ -177,13 +177,27 @@ func (s *productService) GetProductByVariant(tenantid, variantid, locationid, pr
 		return nil, err
 	}
 
-	// Same rule as the browse list: you can only order what the shop has.
+	// NOT filtered by stock, and that is the opposite of the browse list on
+	// purpose.
 	//
-	// Applied here too so the two screens cannot disagree. Without it a variant
-	// group would offer every size on the order sheet while the list that led
-	// there showed only the stocked ones, and a shopper could pick a size the
-	// branch has none of. Unscoped calls are left alone — see InStockOnly.
-	return InStockOnly(result, locationid), nil
+	// This endpoint backs the product screen — the one a shopper reaches by
+	// tapping something. It must always return what they tapped, plus every
+	// member of its variant group, whatever the shelf holds. Filtered, it
+	// produced two failures a shopper would meet immediately: an out-of-stock
+	// product answered with ZERO rows, leaving the screen with nothing to draw;
+	// and tapping "Apple" in a family where only Pineapple was stocked returned
+	// Pineapple, so the page showed something the shopper had not asked for.
+	//
+	// The rule the business wants — only order what we have — is still kept,
+	// in the two places that actually enforce it. The browse list offers only
+	// stocked products, and CreateOrder independently refuses a line it cannot
+	// fill (assertStockAvailable). So showing an empty size here cannot sell
+	// one; it only lets the app grey it out, the way every storefront does.
+	//
+	// `productstock` on each row is what the app disables on. A single ungrouped
+	// product comes back as a one-member group, so the app has one code path:
+	// count the rows, and skip the picker when there is only one.
+	return result, nil
 
 }