always compute products qty not covered & days covered

orders/static/js/orders_helper.js

@@ -1252,13 +1252,13 @@ function _compute_product_data(product) {
     }
 
     /* Coverage related data */
-    if (order_doc.coverage_days !== null) {
+    const coverage_days = (order_doc.coverage_days !== null) ? order_doc.coverage_days : 0;
     let qty_not_covered = 0;
     let days_covered = 0;
 
     if (product.daily_conso !== 0) {
-            qty_not_covered = product.daily_conso * order_doc.coverage_days - product.qty_available - product.incoming_qty - purchase_qty;
-            qty_not_covered = -Math.ceil(qty_not_covered); // round up, so if a value is not fully covered display it
+        qty_not_covered = product.daily_conso * coverage_days - product.qty_available - product.incoming_qty - purchase_qty;
+        qty_not_covered = -Math.ceil(qty_not_covered); // round up: display values that are not fully covered
         qty_not_covered = (qty_not_covered > 0) ? 0 : qty_not_covered; // only display qty not covered (neg value)
 
         days_covered = (product.qty_available + product.incoming_qty + purchase_qty) / product.daily_conso;
@@ -1267,10 +1267,6 @@ function _compute_product_data(product) {
     
     item.qty_not_covered = qty_not_covered;
     item.days_covered = days_covered; 
-    } else {
-        item.qty_not_covered = 'X';
-        item.days_covered = 'X';
-    }
 
     return item;
 }