Clear list collector selected values when some field is changed in Service Portal

[priteshprajapat]

How to clear list collector selected values when some field is changed in Service Portal? Say, I have a list collector on cmdb_ci, and I selected some CIs. Now on change of some filed, i want to clear the already selected values from List collector (in Service Portal). Normal Catalog Item works fine as I cannot use 'gel' in Service Portal, also there is no method in g_list to clear existing values. I already tried Refresh(), and it is not clearing existing values.

[mevenden]

Hello - I use g_form.clearValue from a client script to remove all selected values from a list collector, i.e.:

g_form.clearValue('my_variable_name');

[patricklatella]

Hi mevenden,

I'm using the g_form.clearValue method to clear the contents of the list collector field on a catalog item in service portal.  It is working, however you have to click somewhere for the values to actually be cleared from field.  

Did you experience this?

[carmen87]

Hi Pritesh

I started looking this article https://www.servicenowguru.com/scripting/client-scripts-scripting/limiting-selections-list-collector...

Then I solved using the code below:

var myListCollector = g_list.get(collectorName);

var selectedOptions = g_form.getValue(collectorName).split(',');

if((selectedOptions != "") && (selectedOptions.length > 0)){

//Remove items

          var index = 0;

          for (var i = 1, leng = selectedOptions.length+1; i < leng; i++){

          myListCollector.removeItem(selectedOptions[selectedOptions.length-i]);

          index++;

          }

}