From: Sarah Hoffmann <lonvia@denofr.de>
Date: Thu, 6 Dec 2018 20:18:47 +0000 (+0100)
Subject: traverse address list backwards when computing admin levels
X-Git-Tag: v3.3.0~47
X-Git-Url: https://git.openstreetmap.org/nominatim.git/commitdiff_plain/411f361fcb11824ca72dc61b85baeb32b91f474a

traverse address list backwards when computing admin levels

By starting with the lowest address level, when collecting
administrative boundaries by level, there is a better chance
to actually get the boundary when the capital of the
administrative boundary is tagged with the level of the
boundary as well.

This is just a heuristics adaption to make the best out of
the imprecise admin_level definition for place nodes.

Fixes #1261.
---

diff --git a/lib/AddressDetails.php b/lib/AddressDetails.php
index e6501b57..618e10c9 100644
--- a/lib/AddressDetails.php
+++ b/lib/AddressDetails.php
@@ -103,7 +103,7 @@ class AddressDetails
     public function getAdminLevels()
     {
         $aAddress = array();
-        foreach ($this->aAddressLines as $aLine) {
+        foreach (array_reverse($this->aAddressLines) as $aLine) {
             if (self::isAddress($aLine)
                 && isset($aLine['admin_level'])
                 && $aLine['admin_level'] < 15