feat(billing): Add is_expired field to TopupAdmin and TopupSerializer for better topup management ✨

billing/serializers.py

@@ -21,6 +21,7 @@ class UpdatePaymentSerializer(serializers.ModelSerializer):
 
 class TopupSerializer(serializers.ModelSerializer):
     user = serializers.SerializerMethodField()
+    is_expired = serializers.SerializerMethodField()
 
     def get_user(self, obj):
         user = obj.user
@@ -33,6 +34,9 @@ class TopupSerializer(serializers.ModelSerializer):
             }
         return None
 
+    def get_is_expired(self, obj):
+        return obj.is_expired
+
     class Meta:  # type: ignore
         model = Topup
         fields = [
@@ -41,6 +45,7 @@ class TopupSerializer(serializers.ModelSerializer):
             "user",
             "paid",
             "mib_reference",
+            "is_expired",
             "created_at",
             "updated_at",
         ]