From e574aa36a08fb65b63a4cb07c83a87afd47f1c22 Mon Sep 17 00:00:00 2001
From: David Molineus <david.molineus@netzmacht.de>
Date: Wed, 5 Oct 2016 14:11:25 +0200
Subject: [PATCH] Add accidentally removed getLayer callback.

---
 .../Contao/Leaflet/Dca/LayerCallbacks.php        | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/Netzmacht/Contao/Leaflet/Dca/LayerCallbacks.php b/src/Netzmacht/Contao/Leaflet/Dca/LayerCallbacks.php
index 9372bc7..bfee09a 100644
--- a/src/Netzmacht/Contao/Leaflet/Dca/LayerCallbacks.php
+++ b/src/Netzmacht/Contao/Leaflet/Dca/LayerCallbacks.php
@@ -329,6 +329,22 @@ class LayerCallbacks extends Callbacks
         return $options;
     }
 
+    /**
+     * Get all layers except of the current layer.
+     *
+     * @param \DataContainer $dataContainer The dataContainer driver.
+     *
+     * @return array
+     */
+    public function getLayers($dataContainer)
+    {
+        $collection = LayerModel::findBy('id !', $dataContainer->id);
+
+        return OptionsBuilder::fromCollection($collection, 'title')
+            ->asTree()
+            ->getOptions();
+    }
+
     /**
      * Generate a button.
      *