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Cleanup mqtt publish action template option documentation (#34257)

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* Cleanup mqtt publish action template option documentation

* Missed instance
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Jan Bouwhuis 2024-08-12 14:17:43 +02:00 committed by GitHub
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source/_integrations/mqtt.markdown
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@ -1085,11 +1085,7 @@ The MQTT integration will register the `mqtt.publish` action, which allows publi
| `qos` | yes | Quality of Service to use. (default: 0) |
| `retain` | yes | If message should have the retain flag set. (default: false) |
{% important %}
You must include either `topic` or `topic_template`, but not both. If providing a payload, you need to include either `payload` or `payload_template`, but not both.
{% endimportant %}
### Publish action data examples
```yaml
topic: homeassistant/light/1/command
@ -1100,7 +1096,7 @@ payload: on
```yaml
topic: homeassistant/light/1/state
payload_template: "{{ states('device_tracker.paulus') }}"
payload: "{{ states('device_tracker.paulus') }}"
```
{% endraw %}
@ -1108,27 +1104,24 @@ payload_template: "{{ states('device_tracker.paulus') }}"
{% raw %}
```yaml
topic_template: "homeassistant/light/{{ states('sensor.light_active') }}/state"
payload_template: "{{ states('device_tracker.paulus') }}"
topic: "homeassistant/light/{{ states('sensor.light_active') }}/state"
payload: "{{ states('device_tracker.paulus') }}"
```
{% endraw %}
`payload` must be a string.
Be aware that `payload` must be a string.
If you want to send JSON using the YAML editor then you need to format/escape
it properly. Like:
{% raw %}
```yaml
topic: homeassistant/light/1/state
payload: "{\"Status\":\"off\", \"Data\":\"something\"}"`
```
When using Home Assistant's YAML editor for formatting JSON
you should take special care if `payload` contains template content.
Home Assistant will force you in to the YAML editor and will treat your
definition as a template. Make sure you escape the template blocks as like
in the example below. Home Assistant will convert the result to a string
and will pass it to the MQTT publish action.
{% endraw %}
The example below shows how to publish a temperature sensor 'Bathroom Temperature'.
The `device_class` is set, so it is not needed to set the "name" option. The entity