From bc9fc6622553f0e58bcf5f8301fa2dd43da72f7a Mon Sep 17 00:00:00 2001
From: "J. Nick Koston" <nick@koston.org>
Date: Mon, 2 Feb 2026 05:30:46 +0100
Subject: [PATCH] [template.datetime] Avoid heap allocation for triggers
 (#13710)

---
 esphome/components/template/datetime/template_date.cpp     | 2 +-
 esphome/components/template/datetime/template_date.h       | 4 ++--
 esphome/components/template/datetime/template_datetime.cpp | 2 +-
 esphome/components/template/datetime/template_datetime.h   | 4 ++--
 esphome/components/template/datetime/template_time.cpp     | 2 +-
 esphome/components/template/datetime/template_time.h       | 4 ++--
 6 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/esphome/components/template/datetime/template_date.cpp b/esphome/components/template/datetime/template_date.cpp
index be1d875a7e..8a5f11b876 100644
--- a/esphome/components/template/datetime/template_date.cpp
+++ b/esphome/components/template/datetime/template_date.cpp
@@ -62,7 +62,7 @@ void TemplateDate::control(const datetime::DateCall &call) {
   if (has_day)
     value.day_of_month = *call.get_day();
 
-  this->set_trigger_->trigger(value);
+  this->set_trigger_.trigger(value);
 
   if (this->optimistic_) {
     if (has_year)
diff --git a/esphome/components/template/datetime/template_date.h b/esphome/components/template/datetime/template_date.h
index 0379a9bc67..acf823a34d 100644
--- a/esphome/components/template/datetime/template_date.h
+++ b/esphome/components/template/datetime/template_date.h
@@ -22,7 +22,7 @@ class TemplateDate final : public datetime::DateEntity, public PollingComponent
   void dump_config() override;
   float get_setup_priority() const override { return setup_priority::HARDWARE; }
 
-  Trigger<ESPTime> *get_set_trigger() const { return this->set_trigger_; }
+  Trigger<ESPTime> *get_set_trigger() { return &this->set_trigger_; }
   void set_optimistic(bool optimistic) { this->optimistic_ = optimistic; }
 
   void set_initial_value(ESPTime initial_value) { this->initial_value_ = initial_value; }
@@ -34,7 +34,7 @@ class TemplateDate final : public datetime::DateEntity, public PollingComponent
   bool optimistic_{false};
   ESPTime initial_value_{};
   bool restore_value_{false};
-  Trigger<ESPTime> *set_trigger_ = new Trigger<ESPTime>();
+  Trigger<ESPTime> set_trigger_;
   TemplateLambda<ESPTime> f_;
 
   ESPPreferenceObject pref_;
diff --git a/esphome/components/template/datetime/template_datetime.cpp b/esphome/components/template/datetime/template_datetime.cpp
index e134f2b654..269a1d06ca 100644
--- a/esphome/components/template/datetime/template_datetime.cpp
+++ b/esphome/components/template/datetime/template_datetime.cpp
@@ -80,7 +80,7 @@ void TemplateDateTime::control(const datetime::DateTimeCall &call) {
   if (has_second)
     value.second = *call.get_second();
 
-  this->set_trigger_->trigger(value);
+  this->set_trigger_.trigger(value);
 
   if (this->optimistic_) {
     if (has_year)
diff --git a/esphome/components/template/datetime/template_datetime.h b/esphome/components/template/datetime/template_datetime.h
index b7eb490933..575065a3dd 100644
--- a/esphome/components/template/datetime/template_datetime.h
+++ b/esphome/components/template/datetime/template_datetime.h
@@ -22,7 +22,7 @@ class TemplateDateTime final : public datetime::DateTimeEntity, public PollingCo
   void dump_config() override;
   float get_setup_priority() const override { return setup_priority::HARDWARE; }
 
-  Trigger<ESPTime> *get_set_trigger() const { return this->set_trigger_; }
+  Trigger<ESPTime> *get_set_trigger() { return &this->set_trigger_; }
   void set_optimistic(bool optimistic) { this->optimistic_ = optimistic; }
 
   void set_initial_value(ESPTime initial_value) { this->initial_value_ = initial_value; }
@@ -34,7 +34,7 @@ class TemplateDateTime final : public datetime::DateTimeEntity, public PollingCo
   bool optimistic_{false};
   ESPTime initial_value_{};
   bool restore_value_{false};
-  Trigger<ESPTime> *set_trigger_ = new Trigger<ESPTime>();
+  Trigger<ESPTime> set_trigger_;
   TemplateLambda<ESPTime> f_;
 
   ESPPreferenceObject pref_;
diff --git a/esphome/components/template/datetime/template_time.cpp b/esphome/components/template/datetime/template_time.cpp
index 586e126e3b..9c81687116 100644
--- a/esphome/components/template/datetime/template_time.cpp
+++ b/esphome/components/template/datetime/template_time.cpp
@@ -62,7 +62,7 @@ void TemplateTime::control(const datetime::TimeCall &call) {
   if (has_second)
     value.second = *call.get_second();
 
-  this->set_trigger_->trigger(value);
+  this->set_trigger_.trigger(value);
 
   if (this->optimistic_) {
     if (has_hour)
diff --git a/esphome/components/template/datetime/template_time.h b/esphome/components/template/datetime/template_time.h
index cb83b1b3e5..924b53cc71 100644
--- a/esphome/components/template/datetime/template_time.h
+++ b/esphome/components/template/datetime/template_time.h
@@ -22,7 +22,7 @@ class TemplateTime final : public datetime::TimeEntity, public PollingComponent
   void dump_config() override;
   float get_setup_priority() const override { return setup_priority::HARDWARE; }
 
-  Trigger<ESPTime> *get_set_trigger() const { return this->set_trigger_; }
+  Trigger<ESPTime> *get_set_trigger() { return &this->set_trigger_; }
   void set_optimistic(bool optimistic) { this->optimistic_ = optimistic; }
 
   void set_initial_value(ESPTime initial_value) { this->initial_value_ = initial_value; }
@@ -34,7 +34,7 @@ class TemplateTime final : public datetime::TimeEntity, public PollingComponent
   bool optimistic_{false};
   ESPTime initial_value_{};
   bool restore_value_{false};
-  Trigger<ESPTime> *set_trigger_ = new Trigger<ESPTime>();
+  Trigger<ESPTime> set_trigger_;
   TemplateLambda<ESPTime> f_;
 
   ESPPreferenceObject pref_;