I'm trying to create a filter within a view, which has multiple ranges;
I have seen this before when you Add filter criteria, you can select grouped exposed filter and I can set up the ranges in there. But in this instance, this option is not there and I'm not sure why not.
In the drupal code I found Drupal API which counts the options in
$this->operator_options() - But I don't know what
$this->operator_options() is meant to contain, or how you go about adding items to it through the back-end.