From 5c1ebc22afecfbeee02dcb18bcfa0128523b5a93 Mon Sep 17 00:00:00 2001
From: Christopher Biscardi <chris@christopherbiscardi.com>
Date: Sun, 13 Sep 2020 00:15:10 -0700
Subject: [PATCH] update on_demand_inputs invalidation

---
 book/src/common_patterns/on_demand_inputs.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/book/src/common_patterns/on_demand_inputs.md b/book/src/common_patterns/on_demand_inputs.md
index 77fb3af7..133c9772 100644
--- a/book/src/common_patterns/on_demand_inputs.md
+++ b/book/src/common_patterns/on_demand_inputs.md
@@ -38,7 +38,7 @@ struct MyDatabase { ... }
 impl FileWatcher for MyDatabase {
     fn watch(&self, path: &Path) { ... }
     fn did_change_file(&mut self, path: &Path) {
-        self.query_mut(ReadQuery).invalidate(path);
+        ReadQuery.in_db_mut(self).invalidate(path);
     }
 }
 ```