Luc Bors Weblog

This post is a short one, however, it is useful. When you use a Spinbox to change and display values, you might encounter a problem when the Spinbox' value is empty (or Null). I used the Employees table in the HR Schema for this example. Created ADF BC for this, and dropped the collection as an ADF Form an a simple page. I converted the commission inputText component to an inputNumberSpinbox and set stepSize="0.1". You can click whatever you want but the Spinbox just doesn't work for NULL values. One of the options you have, is to enter a value in the Spinbox by just typing it. A somewhat more elegant solution is the use of javascript. For this I add a client Listener to the Spinbox. The clientListener invokes a javascript function as soon as the Spinbox gets focus. Whenever the value is NULL, it will set the value to ZERO. The Spinbox now knows what to do. <af:document id="d1"> <af:resource type="javascript"> function ...