Garbage Value in Custom Picker

Question

Hi Everyone I&rsquo;m using a custom picker as a user picker to select users based on custom properties. However, I&rsquo;ve run into an issue: 
 &ensp;&ensp;&ensp;&ensp;&ensp;&ensp;&bull;&ensp;&ensp;&ensp;&ensp;&ensp;If I type something in the picker but then erase it without selecting a suggestion, the field ends up holding a garbage or null value. 
 &ensp;&ensp;&ensp;&ensp;&ensp;&ensp;&bull;&ensp;&ensp;&ensp;&ensp;&ensp;This behavior causes unexpected results in my form/data submission. 
 Has anyone faced a similar issue? If so, what&rsquo;s the best way to handle it &mdash; for example, ensuring the field resets properly or validating before submission ?

Stefan Helzle · Answer

You will have to check your code for the "selectedLabels" attribute. Make sure it does not create a list with null values.

Shubham Aware · Answer

In selectedLabels,use
if(isnull(local!selectedUser), {}, {local!selectedUser.name})
to return empty list instead of {null}, and in saveInto add
if(or(isnull(save!value), length(save!value)=0), a!save(local!selectedUser, null), ...)
to clear when text is erased.

Add validations to check if typed text matches valid selection, and disable submit button with disabled: isnull(local!selectedUser) to prevent submission.