array_where_not_null Filter

Removes elements from the array that have a specified null value contained within the given array:

{% set items = [
	{'name':'desk'},
	{'name':null},
	{'name':'bookcase'}
] %}
{{ items|array_where_not_null('name')|array_values|json_encode }}

{# [{"name":"desk"},{"name":"bookcase"}] #}