Append rev of category to URL when loading to force correct version

index.php

@@ -3,6 +3,16 @@
 <?php include "modulekit/loader.php"; /* loads all php-includes */ ?>
 <?php call_hooks("init"); /* initialize submodules */ ?>
 <?php
+if (isset($config['categoriesDir'])) {
+  if (file_exists("{$config['categoriesDir']}/.git")) {
+    exec("chdir " . escapeShellArg($config['categoriesDir']) . "; git rev-parse --short HEAD", $x);
+    $config['categoriesRev'] = $x[0];
+  }
+  else {
+    $config['categoriesRev'] = $modulekit['version'];
+  }
+}
+
 html_export_var(array(
   'config' => $config,
 ));

src/OpenStreetBrowserLoader.js

@@ -33,8 +33,9 @@ OpenStreetBrowserLoader.prototype.getCategory = function (id, callback) {
 
   var req = new XMLHttpRequest()
   req.addEventListener("load", reqListener.bind(this, req))
-  req.open("GET", config.categoriesDir + '/' + id + ".json")
+  req.open("GET", config.categoriesDir + '/' + id + ".json?" + config.categoriesRev)
   req.send()
+
 }
 
 OpenStreetBrowserLoader.prototype.getCategoryFromData = function (id, data, callback) {