From a relation behavior config file like this
status:
label: Status
list: @/plugins/path/to/your/relation/config/columns.yaml
emptyMessage: backend::lang.list.no_records
You can extend the list query with this method :
relationExtendQuery($query, $field, $manageMode)
{
if ($field == 'status') $query->where('thing', '=', $this->thing);
}
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