Add this variable for use by automation and script templates (#52774)

homeassistant/components/automation/__init__.py

@@ -445,15 +445,19 @@ class AutomationEntity(ToggleEntity, RestoreEntity):
             trigger_context,
             self._trace_config,
         ) as automation_trace:
+            this = None
+            state = self.hass.states.get(self.entity_id)
+            if state:
+                this = state.as_dict()
+            variables = {"this": this, **(run_variables or {})}
             if self._variables:
                 try:
-                    variables = self._variables.async_render(self.hass, run_variables)
+                    variables = self._variables.async_render(self.hass, variables)
                 except template.TemplateError as err:
                     self._logger.error("Error rendering variables: %s", err)
                     automation_trace.set_error(err)
                     return
-            else:
-                variables = run_variables
+
             # Prepare tracing the automation
             automation_trace.set_trace(trace_get())
 
@@ -569,11 +573,18 @@ class AutomationEntity(ToggleEntity, RestoreEntity):
         def log_cb(level, msg, **kwargs):
             self._logger.log(level, "%s %s", msg, self.name, **kwargs)
 
-        variables = None
+        this = None
+        self.async_write_ha_state()
+        state = self.hass.states.get(self.entity_id)
+        if state:
+            this = state.as_dict()
+        variables = {"this": this}
         if self._trigger_variables:
             try:
                 variables = self._trigger_variables.async_render(
-                    self.hass, None, limited=True
+                    self.hass,
+                    variables,
+                    limited=True,
                 )
             except template.TemplateError as err:
                 self._logger.error("Error rendering trigger variables: %s", err)

homeassistant/components/script/__init__.py

@@ -401,7 +401,12 @@ class ScriptEntity(ToggleEntity):
             # Prepare tracing the execution of the script's sequence
             script_trace.set_trace(trace_get())
             with trace_path("sequence"):
-                return await self.script.async_run(variables, context)
+                this = None
+                state = self.hass.states.get(self.entity_id)
+                if state:
+                    this = state.as_dict()
+                script_vars = {"this": this, **(variables or {})}
+                return await self.script.async_run(script_vars, context)
 
     async def async_turn_off(self, **kwargs):
         """Stop running the script.

tests/components/automation/test_init.py

@@ -1184,6 +1184,7 @@ async def test_automation_variables(hass, caplog):
                     "variables": {
                         "test_var": "defined_in_config",
                         "event_type": "{{ trigger.event.event_type }}",
+                        "this_variables": "{{this.entity_id}}",
                     },
                     "trigger": {"platform": "event", "event_type": "test_event"},
                     "action": {
@@ -1191,6 +1192,8 @@ async def test_automation_variables(hass, caplog):
                         "data": {
                             "value": "{{ test_var }}",
                             "event_type": "{{ event_type }}",
+                            "this_template": "{{this.entity_id}}",
+                            "this_variables": "{{this_variables}}",
                         },
                     },
                 },
@@ -1224,6 +1227,11 @@ async def test_automation_variables(hass, caplog):
     assert len(calls) == 1
     assert calls[0].data["value"] == "defined_in_config"
     assert calls[0].data["event_type"] == "test_event"
+    # Verify this available to all templates
+    assert calls[0].data.get("this_template") == "automation.automation_0"
+    # Verify this available during variables rendering
+    assert calls[0].data.get("this_variables") == "automation.automation_0"
+    assert "Error rendering variables" not in caplog.text
 
     hass.bus.async_fire("test_event_2")
     await hass.async_block_till_done()
@@ -1276,6 +1284,7 @@ async def test_automation_trigger_variables(hass, caplog):
                     },
                     "trigger_variables": {
                         "test_var": "defined_in_config",
+                        "this_trigger_variables": "{{this.entity_id}}",
                     },
                     "trigger": {"platform": "event", "event_type": "test_event_2"},
                     "action": {
@@ -1283,6 +1292,8 @@ async def test_automation_trigger_variables(hass, caplog):
                         "data": {
                             "value": "{{ test_var }}",
                             "event_type": "{{ event_type }}",
+                            "this_template": "{{this.entity_id}}",
+                            "this_trigger_variables": "{{this_trigger_variables}}",
                         },
                     },
                 },
@@ -1300,7 +1311,10 @@ async def test_automation_trigger_variables(hass, caplog):
     assert len(calls) == 2
     assert calls[1].data["value"] == "overridden_in_config"
     assert calls[1].data["event_type"] == "test_event_2"
-
+    # Verify this available to all templates
+    assert calls[1].data.get("this_template") == "automation.automation_1"
+    # Verify this available during trigger variables rendering
+    assert calls[1].data.get("this_trigger_variables") == "automation.automation_1"
     assert "Error rendering variables" not in caplog.text
 
 
@@ -1332,6 +1346,35 @@ async def test_automation_bad_trigger_variables(hass, caplog):
     assert len(calls) == 0
 
 
+async def test_automation_this_var_always(hass, caplog):
+    """Test automation always has reference to this, even with no variable or trigger variables configured."""
+    calls = async_mock_service(hass, "test", "automation")
+
+    assert await async_setup_component(
+        hass,
+        automation.DOMAIN,
+        {
+            automation.DOMAIN: [
+                {
+                    "trigger": {"platform": "event", "event_type": "test_event"},
+                    "action": {
+                        "service": "test.automation",
+                        "data": {
+                            "this_template": "{{this.entity_id}}",
+                        },
+                    },
+                },
+            ]
+        },
+    )
+    hass.bus.async_fire("test_event")
+    await hass.async_block_till_done()
+    assert len(calls) == 1
+    # Verify this available to all templates
+    assert calls[0].data.get("this_template") == "automation.automation_0"
+    assert "Error rendering variables" not in caplog.text
+
+
 async def test_blueprint_automation(hass, calls):
     """Test blueprint automation."""
     assert await async_setup_component(

tests/components/script/test_init.py

@@ -679,6 +679,7 @@ async def test_script_variables(hass, caplog):
             "script": {
                 "script1": {
                     "variables": {
+                        "this_variable": "{{this.entity_id}}",
                         "test_var": "from_config",
                         "templated_config_var": "{{ var_from_service | default('config-default') }}",
                     },
@@ -688,6 +689,8 @@ async def test_script_variables(hass, caplog):
                             "data": {
                                 "value": "{{ test_var }}",
                                 "templated_config_var": "{{ templated_config_var }}",
+                                "this_template": "{{this.entity_id}}",
+                                "this_variable": "{{this_variable}}",
                             },
                         },
                     ],
@@ -731,6 +734,10 @@ async def test_script_variables(hass, caplog):
     assert len(mock_calls) == 1
     assert mock_calls[0].data["value"] == "from_config"
     assert mock_calls[0].data["templated_config_var"] == "hello"
+    # Verify this available to all templates
+    assert mock_calls[0].data.get("this_template") == "script.script1"
+    # Verify this available during trigger variables rendering
+    assert mock_calls[0].data.get("this_variable") == "script.script1"
 
     await hass.services.async_call(
         "script", "script1", {"test_var": "from_service"}, blocking=True
@@ -758,3 +765,34 @@ async def test_script_variables(hass, caplog):
 
     assert len(mock_calls) == 4
     assert mock_calls[3].data["value"] == 1
+
+
+async def test_script_this_var_always(hass, caplog):
+    """Test script always has reference to this, even with no variabls are configured."""
+
+    assert await async_setup_component(
+        hass,
+        "script",
+        {
+            "script": {
+                "script1": {
+                    "sequence": [
+                        {
+                            "service": "test.script",
+                            "data": {
+                                "this_template": "{{this.entity_id}}",
+                            },
+                        },
+                    ],
+                },
+            },
+        },
+    )
+    mock_calls = async_mock_service(hass, "test", "script")
+
+    await hass.services.async_call("script", "script1", blocking=True)
+
+    assert len(mock_calls) == 1
+    # Verify this available to all templates
+    assert mock_calls[0].data.get("this_template") == "script.script1"
+    assert "Error rendering variables" not in caplog.text