Ignore markers without defined coordinates.

CHANGELOG.md

@@ -10,7 +10,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 [Full Changelog](https://github.com/netzmacht/contao-leaflet-maps/compare/3.1.0...hotfix/3.1.1)
 
+### Fixed
+
  - Fix missing marker cluster icon
+ - Ignore markers without coordinates 
 
 ## 3.1.0 - 2018-01-11
 

src/Model/MarkerModel.php

@@ -44,7 +44,18 @@ class MarkerModel extends AbstractActiveModel
     public static function findByFilter($pid, ?Filter $filter = null)
     {
         if (!$filter) {
-            return static::findActiveBy('pid', $pid, ['order' => 'sorting']);
+            $table   = static::getTable();
+
+            return static::findBy(
+                [
+                    $table . '.active=1',
+                    $table . '.pid=?',
+                    $table . '.latitude>0',
+                    $table . '.longitude>0',
+                ],
+                [$pid],
+                ['order' => 'sorting']
+            );
         }
 
         switch (true) {