providers/slack/docs/operators/slack_webhook.rst
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Use the :class:~airflow.providers.slack.operators.slack_webhook.SlackWebhookOperator to post messages
to predefined Slack channel through Incoming Webhook <https://api.slack.com/messaging/webhooks>__
Using the Operator ^^^^^^^^^^^^^^^^^^
You could send simple text message
.. exampleinclude:: /../../slack/tests/system/slack/example_slack_webhook.py :language: python :dedent: 4 :start-after: [START slack_webhook_operator_text_howto_guide] :end-before: [END slack_webhook_operator_text_howto_guide]
Or you could use Block Kit <https://api.slack.com/reference/block-kit>_ for create app layouts
.. exampleinclude:: /../../slack/tests/system/slack/example_slack_webhook.py :language: python :dedent: 4 :start-after: [START slack_webhook_operator_blocks_howto_guide] :end-before: [END slack_webhook_operator_blocks_howto_guide]