Per the Module interface, init() is called after any configuration data has been populated to the Inputfield, but before render.
Usage
$inputfield->init();
Inputfield methods and properties
API reference based on ProcessWire core version 3.0.236
“…building with ProcessWire was a breeze, I really love all the flexibility the system provides. I can’t imagine using any other CMS in the future.” —Thomas Aull