add billing process

UI_V2/dbActions/bulk_products.py

@@ -82,16 +82,17 @@ class BulkProducts:
                 return result
             return None
         
-    def get_product_by_bill_id(self, bill_id):
+    def get_products_by_bill_id(self, bill_id):
         with sqlite3.connect(self.db_path) as conn:
             cursor = conn.cursor()
             cursor.execute("""
                 SELECT * FROM bulk_products WHERE bill_id = ?
             """,(bill_id, ))
-            row = cursor.fetchone()
+            rows = cursor.fetchall()
             result = []
-            if row:
-                result = {
+            if rows:
+                for row in rows: 
+                    buffer =  {
                         "id": row[0], 
                         "bill_id": row[1], 
                         "name": row[2],
@@ -101,8 +102,9 @@ class BulkProducts:
                         "vat": row[6],
                         "created_at": row[7]
                     }
+                    result.append(buffer)
                 return result
-            return None
+            return []
         
     def remove(self, id):
          with sqlite3.connect(self.db_path) as conn: