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Can I define a slack incoming webhook block in code?
```"""Incoming Webhook Block for #prefect-alerts Slack Channel."""
import os

from prefect.blocks.notifications import SlackWebhook


class PrefectAlerts(SlackWebhook):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self._block_document_name = "prefect-alerts-incoming-webhook"
    
    url = os.getenv("PREFECT_INCOMING_WEBHOOK__PREFECT_ALERTS")```
is this how i would give it a name?

image.png

hi <@U024EMRLBCH> - a couple things to note

• yes you can define blocks in code
• you don't need to subclass anything if you don't want a new _type_ of block
    ◦ in general <https://docs.prefect.io/3.0/develop/blocks#create-a-new-block-type|if you do actually want your own type>, i wouldn't override dunder init for blocks unless you know you need to, because they are pydantic models and they do special dataclass type things in the init
• to simply use a slack-webhook block programmatically you can take the suggestion from the UI 

```"""Incoming Webhook Block for #prefect-alerts Slack Channel."""
import os

from prefect_slack import SlackWebhook


if __name__ == "__main__":
    SlackWebhook(
        url=os.getenv("PREFECT_INCOMING_WEBHOOK__PREFECT_ALERTS")
    ).save(name="incoming-webhook-prefect-alerts")```
block^

```from prefect.automations import Automation
from prefect.events.schemas.automations import EventTrigger
from prefect_slack import SlackWebhook

if __name__ == "__main__":
    webhook = SlackWebhook.load(name="incoming-webhook-prefect-alerts")
    automation = Automation(
        name="failure-prefect-alerts",
        trigger=EventTrigger(
            expect={
                "prefect.flow-run.Failed",
            },
            match={
                "prefect.resource.id": "prefect.flow-run.*"
            },
            posture="Reactive",
            for_each={
                "prefect.resource.id"
            },
            threshold=1,
            within=0,
        ),
        actions=[webhook]
    ).create()```
automation^

can i set the subject and message somewhere in there?

Screenshot 2024-09-16 at 3.15.39 PM.png

so `actions` needs to take a <https://github.com/prefecthq/prefect/blob/main/src/prefect/server/events/actions.py#L1663-L1680|known / defined action>, like `RunDeployment` / `PauseDeployment` or `SendNotification`

you'll want to import and provide the <https://github.com/prefecthq/prefect/blob/main/src/prefect/events/actions.py#L141-L149|client version of this> , which cloud will support