You have 2 problems
The first is an error in your code, this
$query->is_search
should be this
$query->is_search()
The second thing is that ordering by several fields is not going to work the way I suspect you think it will or want it do. The second field will be order within the order or the first. An example:
Let’s say that you have two fields
- State
- County
and you order the posts first by state and then by county. It will order all of the posts alphabetically by state and then by county within each state.
- State
- county
- county
- county
- county
- county
- county
- State
- county
- county
- county
- county
- county
- county
