product add main_img

app/apphtml5/modules/Catalog/block/product/Index.php

@@ -72,6 +72,7 @@ class Index
             'image_thumbnails'          => $this->_image_thumbnails,
             'image_detail'              => $this->_image_detail,
             'sku'                       => $this->_product['sku'],
+            'main_img'                       => isset($this->_product['image']['main']['image']) ? $this->_product['image']['main']['image'] : '',
             'package_number'            => $this->_product['package_number'],
             'spu'                       => $this->_product['spu'],
             'attr_group'                => $this->_product['attr_group'],