From b6df83a0e9ef864cc3d31e8b88f40f7fa363146d Mon Sep 17 00:00:00 2001
From: Tyler Goodlet <jgbt@protonmail.com>
Date: Tue, 21 Mar 2023 22:28:26 -0400
Subject: [PATCH] Typecast `OrderMode.staged.symbol: str` before `.copy()`!

---
 piker/ui/order_mode.py | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/piker/ui/order_mode.py b/piker/ui/order_mode.py
index e6c4ed33..3125fefe 100644
--- a/piker/ui/order_mode.py
+++ b/piker/ui/order_mode.py
@@ -349,12 +349,22 @@ class OrderMode:
         '''
         if not order:
             staged: Order = self._staged_order
+
             # apply order fields for ems
             oid = str(uuid.uuid4())
-            order = staged.copy()
-            order.oid = oid
 
-        order.symbol = order.symbol.fqme
+            # we have to copy and slap in the `MktPair` first
+            # since we can't cast to it without being mega explicit
+            # with `msgspec.Struct`, which we're not yet..
+            fqme = staged.symbol
+            if not isinstance(fqme, str):
+                mkt = staged.symbol.copy()
+                fqme = mkt.fqme
+                staged.symbol = fqme
+
+            order = staged.copy()
+            order.symbol = fqme
+            order.oid = oid
 
         lines = self.lines_from_order(
             order,