Copy map layer relations (Fix #89)

CHANGELOG.md

@@ -8,6 +8,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+
+ - Duplicate map layer relations ([#89](https://github.com/netzmacht/contao-leaflet-maps/issues/89))
+
 ## [3.1.6] - 2020-01-03
 
 ### Fixed

src/Bundle/Resources/contao/dca/tl_leaflet_map.php

@@ -28,6 +28,9 @@ $GLOBALS['TL_DCA']['tl_leaflet_map'] = [
         'onsubmit_callback' => [
             ['netzmacht.contao_leaflet.listeners.dca.leaflet', 'clearCache'],
         ],
+        'oncopy_callback' => [
+            ['netzmacht.contao_leaflet.listeners.dca.map', 'copyLayerRelations'],
+        ],
     ],
 
     'list' => [

src/Listener/Dca/MapDcaListener.php

@@ -226,4 +226,26 @@ class MapDcaListener extends AbstractListener
             ->asTree()
             ->getOptions();
     }
+
+    /**
+     * Copy layer relations if a map is duplicated.
+     *
+     * @param string|int    $insertId      Insert id of the new map.
+     * @param DataContainer $dataContainer Data container driver.
+     *
+     * @return void
+     */
+    public function copyLayerRelations($insertId, DataContainer $dataContainer): void
+    {
+        $statement = $this->connection->prepare('SELECT * FROM tl_leaflet_map_layer WHERE mid=:mid order BY sorting');
+        $statement->bindValue('mid', $dataContainer->id);
+        $statement->execute();
+
+        while ($row = $statement->fetch(PDO::FETCH_ASSOC)) {
+            unset($row['id']);
+            $row['tstamp'] = time();
+            $row['mid']    = $insertId;
+            $this->connection->insert('tl_leaflet_map_layer', $row);
+        }
+    }
 }