Added new Collection::merge() method #1258

system/src/Grav/Common/Page/Collection.php

@@ -74,6 +74,21 @@ class Collection extends Iterator
         return new static($this->items, $this->params, $this->pages);
     }
 
+    /**
+     *
+     * Merge another collection with the current collection
+     *
+     * @param Collection $collection
+     * @return $this
+     */
+    public function merge(Collection $collection)
+    {
+        foreach($collection as $page) {
+            $this->addPage($page);
+        }
+        return $this;
+    }
+
     /**
      * Set parameters to the Collection
      *