Add human readable reference to bills

uncloud/uncloud_pay/models.py

@@ -180,6 +180,12 @@ class Bill(models.Model):
 
     valid = models.BooleanField(default=True)
 
+    @property
+    def reference(self):
+        return "{}_{}".format(
+                self.owner.username,
+                self.creation_date.strftime("%Y-%m-%d-%H%M"))
+
     @property
     def records(self):
         bill_records = []