From d7033d538ed874e203c74bb3998c41c9c1d600e2 Mon Sep 17 00:00:00 2001
From: Riad Benguella <benguella@gmail.com>
Date: Tue, 8 Aug 2017 17:10:21 +0100
Subject: [PATCH] Gallery Block: Fix inserting a gallery

---
 blocks/library/gallery/index.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/blocks/library/gallery/index.js b/blocks/library/gallery/index.js
index c4eba4657bfc28..a558a6412f7d99 100644
--- a/blocks/library/gallery/index.js
+++ b/blocks/library/gallery/index.js
@@ -59,7 +59,6 @@ const editMediaLibrary = ( attributes, setAttributes ) => {
 };
 
 function defaultColumnsNumber( attributes ) {
-	attributes.images = attributes.images || [];
 	return Math.min( 3, attributes.images.length );
 }
 
@@ -68,6 +67,10 @@ registerBlockType( 'core/gallery', {
 	icon: 'format-gallery',
 	category: 'common',
 
+	defaultAttributes: {
+		images: [],
+	},
+
 	getEditWrapperProps( attributes ) {
 		const { align } = attributes;
 		if ( 'left' === align || 'right' === align || 'wide' === align || 'full' === align ) {
@@ -76,7 +79,7 @@ registerBlockType( 'core/gallery', {
 	},
 
 	edit( { attributes, setAttributes, focus, className } ) {
-		const { images = [], columns = defaultColumnsNumber( attributes ), align = 'none' } = attributes;
+		const { images, columns = defaultColumnsNumber( attributes ), align = 'none' } = attributes;
 		const setLinkTo = ( value ) => setAttributes( { linkTo: value } );
 		const setColumnsNumber = ( event ) => setAttributes( { columns: event.target.value } );
 		const updateAlignment = ( nextAlign ) => setAttributes( { align: nextAlign } );