channel_canvas_create

This function creates a channel canvas. The canvas_create_type will default to blank if not provided.

In order to use this Slack function in a coded workflow, you must do the following:

1. The channel in which you want to create a canvas by using this function must be created by your coded workflow as a step before this function is called. You can use the create_channel Slack function to do this.
2. The invoking user (i.e., the end-user triggering the workflow) must be a member of the newly-created channel before this function executes. There are two recommended ways of doing this:
   • The create_channel Slack function accepts a manager_ids parameter where you can assign a user as a channel manager. This allows you to automatically add a user to a channel when creating it.
   • You could call the invite_user_to_channel Slack function after the create_channel Slack function completes to invite the invoking user to the channel.

In addition, the app calling this function will need the following App Home features configured in its manifest file:

features: {
  appHome: {
    messagesTabEnabled: true,
    messagesTabReadOnlyEnabled: false,
  },
},

For information about the expanded_rich_text type that you can use to update your canvases, refer to expanded_rich_text.

Example workflow step:

const createChannelCanvasStep = ExampleWorkflow.addStep(
  Schema.slack.functions.ChannelCanvasCreate,
  {
    channel_id: "CHAN123456",
    canvas_create_type: "template",
    canvas_template_id: "TEM123456",
    content: { inputs.content }
  },
);