Buttons node

Available buttons:

• URL: Open a URL inside the client. Button feedbacks are available for Telegram and Messenger extensions in Facebook [Telegram, Facebook, Viber]
• Postback: Allow the user to send a predefined message, the message will no be shown in the chat history. Button feedbacks are available for Telegram and Messenger extensions in Facebook [Telegram, Facebook, Smooch, Viber]
• Phone call: Starts a phone call on mobile. [Facebook]
• Log In: Starts the account linking flow. [Facebook]
• Log Out: Starts the account unlinking flow. [Facebook]
• New row: Telegram supports buttons layout with multiple row, this element just starts a new one. [Telegram, Viber]

Platform exceptions

• Telegram supports a visual feedback, visible in the client, when a Postback or URL buttons is pressed
• Facebook supports some extra parameters in the URL button, like the size of the web view and messenger extensions and a maximum od three buttons.

Buttons can be created programmatically by an upstream Function node passing array of buttons in the message payload:

msg.payload = [
  {
    type: 'url',
    url: 'http://javascript-jedi.com',
    label: 'Javascript Jedi'
  },
  {
    type: 'postback',
    value: 'MY_POSTBACK_MESSAGE',
    label: 'Click me!'
  },
  {
    type: 'share'
  }
];
return msg;

Another way is to specify each config option as keys of an object in the message payload:

msg.payload = {
  message: 'This is a message above the buttons',
  buttons: [
    {
      type: 'url',
      url: 'http://javascript-jedi.com',
      label: 'Javascript Jedi'
    },
    {
      type: 'postback',
      value: 'MY_POSTBACK_MESSAGE',
      label: 'Click me!'
    },
    {
      type: 'share'
    }
  ]
};
return msg;

Available parameters for the msg.payload

Name	Type	Description
message	string	The message text above the buttons
buttons	array of [button]	The list of inline buttons

The [button] object

Name	Type	Description
type	string	Type of button: url, postback, quick-reply, location, call, share, login, logout, newline
label	string	Label of the button
value	string	Value returned as payload in postback buttons
url	string	Url to redirect to for url buttons or authentication URL for login buttons
number	string	Phone number to call for call buttons
messengerExtensions	boolean	Include Messenger Extensions for url buttons
answer	string	The feedback shown on Telegram client for url and postback buttons
alert	boolean	Show the feedback as alert on Telegram client for url and postback buttons
style	string	Style of buttons in Slack: default, primary, danger
webViewHeightRatio	string	Aspect ratio of the webview in Facebook Messenger for url buttons. Valid values: tall, compact, full