Support this variable in template alarm actions (#71744)

homeassistant/components/template/alarm_control_panel.py

@@ -230,7 +230,9 @@ class AlarmControlPanelTemplate(TemplateEntity, AlarmControlPanelEntity):
             self._state = state
             optimistic_set = True
 
-        await script.async_run({ATTR_CODE: code}, context=self._context)
+        await self.async_run_script(
+            script, run_variables={ATTR_CODE: code}, context=self._context
+        )
 
         if optimistic_set:
             self.async_write_ha_state()

homeassistant/components/template/template_entity.py

@@ -19,7 +19,7 @@ from homeassistant.const import (
     EVENT_HOMEASSISTANT_START,
     STATE_UNKNOWN,
 )
-from homeassistant.core import CoreState, Event, State, callback
+from homeassistant.core import Context, CoreState, Event, State, callback
 from homeassistant.exceptions import TemplateError
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entity import Entity
@@ -28,6 +28,7 @@ from homeassistant.helpers.event import (
     TrackTemplateResult,
     async_track_template_result,
 )
+from homeassistant.helpers.script import Script, _VarsType
 from homeassistant.helpers.template import (
     Template,
     TemplateStateFromEntityId,
@@ -455,3 +456,21 @@ class TemplateEntity(Entity):
     async def async_update(self) -> None:
         """Call for forced update."""
         self._async_update()
+
+    async def async_run_script(
+        self,
+        script: Script,
+        *,
+        run_variables: _VarsType | None = None,
+        context: Context | None = None,
+    ) -> None:
+        """Run an action script."""
+        if run_variables is None:
+            run_variables = {}
+        return await script.async_run(
+            run_variables={
+                "this": TemplateStateFromEntityId(self.hass, self.entity_id),
+                **run_variables,
+            },
+            context=context,
+        )

tests/components/template/test_alarm_control_panel.py

@@ -44,22 +44,22 @@ OPTIMISTIC_TEMPLATE_ALARM_CONFIG = {
     "arm_away": {
         "service": "alarm_control_panel.alarm_arm_away",
         "entity_id": "alarm_control_panel.test",
-        "data": {"code": "1234"},
+        "data": {"code": "{{ this.entity_id }}"},
     },
     "arm_home": {
         "service": "alarm_control_panel.alarm_arm_home",
         "entity_id": "alarm_control_panel.test",
-        "data": {"code": "1234"},
+        "data": {"code": "{{ this.entity_id }}"},
     },
     "arm_night": {
         "service": "alarm_control_panel.alarm_arm_night",
         "entity_id": "alarm_control_panel.test",
-        "data": {"code": "1234"},
+        "data": {"code": "{{ this.entity_id }}"},
     },
     "disarm": {
         "service": "alarm_control_panel.alarm_disarm",
         "entity_id": "alarm_control_panel.test",
-        "data": {"code": "1234"},
+        "data": {"code": "{{ this.entity_id }}"},
     },
 }
 
@@ -261,6 +261,7 @@ async def test_actions(hass, service, start_ha, service_calls):
     await hass.async_block_till_done()
     assert len(service_calls) == 1
     assert service_calls[0].data["service"] == service
+    assert service_calls[0].data["service_data"]["code"] == TEMPLATE_NAME
 
 
 @pytest.mark.parametrize("count,domain", [(1, "alarm_control_panel")])