chg: [navigation] Breadcrumb generation is user aware

- moved the initialisation of the generation to be invoked from the appcontroller's beforefilter, after the user is loaded into the ACL component
- Only show user setting edits when the user is editing themselves

src/Controller/AppController.php

@@ -110,6 +110,7 @@ class AppController extends Controller
             }
             unset($user['password']);
             $this->ACL->setUser($user);
+            $this->Navigation->genBreadcrumbs($user);
             $this->request->getSession()->write('authUser', $user);
             $this->isAdmin = $user['role']['perm_admin'];
             if (!$this->ParamHandler->isRest()) {

src/Controller/Component/Navigation/Users.php

@@ -1,7 +1,7 @@
 <?php
 namespace BreadcrumbNavigation;
 
-require_once(APP . 'Controller' . DS . 'Component' . DS . 'Navigation' . DS . 'base.php'); 
+require_once(APP . 'Controller' . DS . 'Component' . DS . 'Navigation' . DS . 'base.php');
 
 class UsersNavigation extends BaseNavigation
 {
@@ -24,17 +24,21 @@ class UsersNavigation extends BaseNavigation
         $bcf = $this->bcf;
         $request = $this->request;
         $passedData = $this->request->getParam('pass');
-        $this->bcf->addLink('Users', 'view', 'UserSettings', 'index', function ($config) use ($bcf, $request, $passedData) {
-            if (!empty($passedData[0])) {
-                $user_id = $passedData[0];
-                $linkData = [
-                    'label' => __('Account settings', h($user_id)),
-                    'url' => sprintf('/users/settings/%s', h($user_id))
-                ];
-                return $linkData;
-            }
-            return [];
-        });
+        $currentUser = $this->currentUser;
+        $ownUser = (!empty($passedData[0]) && $passedData[0] === $currentUser['id']);
+        if ($ownUser) {
+            $this->bcf->addLink('Users', 'view', 'UserSettings', 'index', function ($config) use ($bcf, $request, $passedData, $currentUser) {
+                if (!empty($passedData[0])) {
+                    $user_id = $passedData[0];
+                    $linkData = [
+                        'label' => __('Account settings', h($user_id)),
+                        'url' => sprintf('/users/settings/%s', h($user_id))
+                    ];
+                    return $linkData;
+                }
+                return [];
+            });
+        }
         $this->bcf->addLink('Users', 'view', 'UserSettings', 'index', function ($config) use ($bcf, $request, $passedData) {
             if (!empty($passedData[0])) {
                 $user_id = $passedData[0];

src/Controller/Component/Navigation/base.php

@@ -5,6 +5,7 @@ class BaseNavigation
 {
     protected $bcf;
     protected $request;
+    public $currentUser;
 
     public function __construct($bcf, $request)
     {
@@ -12,8 +13,13 @@ class BaseNavigation
         $this->request = $request;
     }
 
+    public function setCurrentUser($currentUser)
+    {
+        $this->currentUser = $currentUser;
+    }
+
     public function addRoutes() {}
     public function addParents() {}
     public function addLinks() {}
     public function addActions() {}
-}
+}