gistfile1.txt

// View

$('select#sales_rep').change(function(e) {
	$.ajax({
		type:'POST',
		url:'/ajax/getSalesIds',
		dataType:'json',
		data:{ id:$(this).val(), token:csrf },
		success: function(data) { console.log(data); },
		error: function(XMLHttpRequest, textStatus, errorThrown) { console.log(errorThrown); }
	});
});

// Controller

public function getSalesIds()
{
	header('Content-Type: application/json');
	echo $this->ion_auth->user($this->input->post('id'))->row()->sales_id;
}