From 810f22e8c9b908637c03bf5e0026faf04daba647 Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@home-assistant.io>
Date: Tue, 7 Apr 2026 15:39:31 -1000
Subject: [PATCH] [sprinkler] Use TemplatableValue for valve_to_start (set from
 C++ with raw value)

valve_to_start is set from both codegen (lambdas) and C++ code
(raw size_t in sprinkler.cpp:387). Use TemplatableValue directly
instead of the TEMPLATABLE_VALUE macro since TemplatableFn doesn't
accept raw runtime values.
---
 esphome/components/sprinkler/automation.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/esphome/components/sprinkler/automation.h b/esphome/components/sprinkler/automation.h
index b3f030805dd..ed091ac5d71 100644
--- a/esphome/components/sprinkler/automation.h
+++ b/esphome/components/sprinkler/automation.h
@@ -108,7 +108,9 @@ template<typename... Ts> class StartSingleValveAction : public Action<Ts...> {
  public:
   explicit StartSingleValveAction(Sprinkler *a_sprinkler) : sprinkler_(a_sprinkler) {}
 
-  TEMPLATABLE_VALUE(size_t, valve_to_start)
+  // valve_to_start uses TemplatableValue (not TemplatableFn) because it is set
+  // from both codegen (lambdas) and C++ (raw values in sprinkler.cpp).
+  template<typename V> void set_valve_to_start(V valve_to_start) { this->valve_to_start_ = valve_to_start; }
   TEMPLATABLE_VALUE(uint32_t, valve_run_duration)
 
   void play(const Ts &...x) override {
@@ -118,6 +120,7 @@ template<typename... Ts> class StartSingleValveAction : public Action<Ts...> {
 
  protected:
   Sprinkler *sprinkler_;
+  TemplatableValue<size_t, Ts...> valve_to_start_{};
 };
 
 template<typename... Ts> class ShutdownAction : public Action<Ts...> {