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90 lines
3.1 KiB
Markdown
90 lines
3.1 KiB
Markdown
---
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layout: page
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title: "Persistent notification"
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description: "Instructions on how to integrate persistent notifications into Home Assistant."
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date: 2016-06-25 10:00
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sidebar: true
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comments: false
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sharing: true
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footer: true
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logo: home-assistant.png
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ha_category: Other
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ha_release: 0.23
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---
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The `persistent_notification` can be used to show a message on the frontend that has to be dismissed by the user.
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<p class='img'>
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<img src='/images/screenshots/persistent-notification.png' />
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</p>
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### {% linkable_title Service %}
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The service `persistent_notification/create` takes in `message`, `title`, and `notification_id`.
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| Service data attribute | Optional | Description |
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| ---------------------- | -------- | ----------- |
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| `message` | no | Body of the notification.
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| `title` | yes | Title of the notification.
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| `notification_id` | yes | If `notification_id` is given, it will overwrite the notification if there already was a notification with that ID.
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The `persistent_notification` component supports specifying [templates](/topics/templating/) for both the `message` and the `title`. This will allow you to use the current state of Home Assistant in your notifications.
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In an [action](/getting-started/automation-action/) of your [automation setup](/getting-started/automation/) it could look like this with a customized subject.
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```yaml
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action:
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service: persistent_notification.create
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data:
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message: "Your message goes here"
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title: "Custom subject"
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```
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The service `persistent_notification/dismiss` requires a `notification_id`.
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| Service data attribute | Optional | Description |
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| ---------------------- | -------- | ----------- |
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| `notification_id` | no | the `notification_id` is required to identify the notification that should be removed.
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This service allows you to remove a notifications by script or automation.
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```yaml
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action:
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service: persistent_notification.dismiss
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data:
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notification_id: "1234"
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```
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### {% linkable_title Markdown support %}
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The message attribute supports the [Markdown formatting syntax](https://daringfireball.net/projects/markdown/syntax). Some examples are:
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| Type | Message |
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| ---- | ------- |
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| Headline 1 | `# Headline` |
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| Headline 2 | `## Headline` |
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| Newline | `\n` |
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| Bold | `**My bold text**` |
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| Cursive | `*My cursive text*` |
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| Link | `[Link](https://home-assistant.io/)` |
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| Image | `` |
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<p class="note">
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`/local/` in this context refers to the `.homeassistant/www/` folder.
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</p>
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### {% linkable_title Create a persistent notification %}
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Choose <img src='/images/screenshots/developer-tool-services-icon.png' alt='service developer tool icon' class="no-shadow" height="38" /> **Services** from the **Developer Tools** to call the `persistent_notification` service. Select `persistent_notification/create` from the list of **Available services:** and enter something like the sample below into the **Service Data** field and hit **CALL SERVICE**.
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```json
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{
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"notification_id": "1234",
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"title": "Sample notification",
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"message": "This is a sample text"
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}
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```
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This will create the notification entry shown above.
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