What are client actions?
A client action is an action that a Flock client takes when a user interacts with a control (e.g. buttons, slash commands, etc.) provided by your app.
Flock supports three kinds of client actions:
- Open a widget containing your app's content
- Open a URL in the system browser
- Dispatch an event to the app backend
How do I configure a client action?
Typically you setup a client action by providing a ClientActionConfig object while configuring a button or a slash command, either in the app manifest or in an attachment.
Which client action is performed depends on the
type attribute of this object:
open_widget– opens a widget
open_browser– opens the system browser
dispatch_event– sends an event to the app backend
Or to dispatch an event to the app backend when a user clicks on an attachment button, provide the action type
dispatch_event when configuring the button:
For more details, see the reference documentation for ClientActionConfig.
How do I open a widget?
Open a widget by providing a ClientActionConfig object with type
open_widget and the following attributes:
url– the widget URL to open
widget_type– the type of widget to open. should be either
For example, to open a widget anytime a user presses a chat tab button, provide this configuration:
How do I open the system browser?
Open the system browser by providing a ClientActionConfig object with type
open_browser and the following attributes:
url– the URL to open
send_context– whether to append Flock specific query parameters (like
flock_user_token, etc.) to the URL or not. The default value is
false. Never set this to
trueif you are opening a third party URL in the browser.
For example, to open the browser anytime a user presses the attachment picker button, provide this configuration:
How do I dispatch an event to the app backend?
Send an event to your app backend by providing a ClientActionConfig object with the type
Which event is sent to your app backend is covered in the next section.
For example, to dispatch an event when user enters a slash command, provide this configuration:
How does my app discover what triggered the client action?
An event is generated anytime a client action is triggered. The event alongwith its attributes is
- either sent to the app backend using the Events API if the configured action was to dispatch the event
- or passed as the URL query params
flock_event_attributesto the widget or browser URL
The table below explains what event is generated for each trigger:
The event name alongwith its attribute should provide sufficient context for the client action.
Can client actions be triggered for users who haven't installed the app?
Yes, there are a couple of scenarios in which a Flock client might trigger one for a user who hasn't installed the app
- An attachment that contains a widget is shared with a user or a group where atleast some users haven't installed your app
- An attachment shared with such a user contains a button that triggers a client action
In case the configured action is to open a widget or the browser, the Flock client allows it, however no user token is passed. See this section in the widgets page for more details.
In the configured action is to dispatch an event to the app backend, the Flock client doesn't allow it, and instead prompts the user to install your app.