List box control not clearing values when SMO returns 0 items
KBS100045
PRODUCTIssue
There is a list box that is bounded to a SMO. This list box is working as expected until the SMO does not return any value. When the SMO does not return any value, the expectation is that the list box will be empty, however it keeps the last known value. ie. it never gets cleared when there are no value in SMO.
The issue encountered is similar to the following post: http://community.k2.com/t5/K2-blackpearl/How-to-Clear-a-List-Box-Control/ta-p/83908
Symptoms
We have a list box control that is bounded to a SmartObject.
This list box is working as expected until the SmartObject does not return any value.
When the SmartObject does not return any value, the expectation is that the list box will be empty, however it keeps the last known value. ie. it never gets cleared when there are no value in the SmartObject.
Troubleshooting Steps
To resolve this please complete the following Workaround:
1) Create an empty entry
2) Filter this entry on the Input mappings of the View initialize
3) Call two rules to populate the controls:
1) Show blank entry
2) Filter on input mapping (if input mapping is empty then the blank entry is shown).
