Trigger
Last updated
Last updated
The trigger initiates a function to execute its action. To do this, the trigger listens for events. Events can be captured by users or programmatically.
Jump to .
The following events can serve as triggers:
Application logic events
change, update, or becoming true of an input argument
change, update, or becoming true of an output
change, update, or becoming true of a modifier
UI events
Click of a button
Loading of a page
Start of an app
once
periodic (every 0.1 seconds to once a day)
Stop of an app
App Builder: Click on the trigger icon of the function
A single function can be associated with more than one trigger event. For instance, a function might be triggered when its input argument is updated or when a page is loaded. It can also be triggered periodically after app start.
A trigger can be configured in different ways:
Via context menu: Right-click on the trigger box
App start
App stop
Drag and drop of other items on a trigger
on page load
on input change, update, true
on output change, update, true
on modifier change, update, true
Drag and drop of a trigger on a button
To unlink an event from a trigger, click the x next to the trigger event.
To sequentially process an array of data, the trigger can be configured to execute the function for each value within the array individually, one by one. This type of function execution corresponds to a so-called loop in classic programming.
To configure sequential processing of arrays:
Right-click on the trigger to open the context menu.
Hover above Process One By One.
Select the input argument of the function that contains the array.
To switch back to regular processing:
Right-click on the trigger to open the context menu.
Select Process Regularly.
