Add reference layer.

src/Netzmacht/Contao/Leaflet/Model/AbstractActiveModel.php

@@ -0,0 +1,45 @@
+<?php
+
+/**
+ * @package    dev
+ * @author     David Molineus <david.molineus@netzmacht.de>
+ * @copyright  2015 netzmacht creative David Molineus
+ * @license    LGPL 3.0
+ * @filesource
+ *
+ */
+
+namespace Netzmacht\Contao\Leaflet\Model;
+
+
+abstract class AbstractActiveModel extends \Model
+{
+    /**
+     *
+     * @param int   $modelId
+     * @param array $options
+     *
+     * @return \Model|null
+     */
+    public static function findActiveByPK($modelId, $options = array())
+    {
+        return static::findOneBy('active=1 AND id', $modelId, $options);
+    }
+
+    /**
+     *
+     * @param int   $value
+     * @param array $options
+     *
+     * @return \Model|null
+     */
+    public static function findActiveBy($column, $value, $options = array())
+    {
+        return static::findBy('active=1 AND ' . $column, $value, $options);
+    }
+
+    public static function findActivated($options = array())
+    {
+        return static::findBy('active', '1', $options);
+    }
+}