From a7441a6d155f5d7770cc70a1c34eeeb4b097dc21 Mon Sep 17 00:00:00 2001
From: Sal Ferrarello <sal@ironcodestudio.com>
Date: Sat, 21 Apr 2018 23:53:37 -0400
Subject: [PATCH] Add function_exists() check to block PHP template

Check for the existance of the function register_block_type() in the PHP
code when creating a block.

Since Gutenberg has not yet been merged into core, currently the function
register_block_type() is only defined if the Gutenberg plugin is installed
and activated.

See #146
---
 templates/block-php.mustache | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/templates/block-php.mustache b/templates/block-php.mustache
index 43f6708e3..f925bcda3 100644
--- a/templates/block-php.mustache
+++ b/templates/block-php.mustache
@@ -13,6 +13,10 @@
  * @see https://wordpress.org/gutenberg/handbook/blocks/writing-your-first-block-type/#enqueuing-block-scripts
  */
 function {{machine_name}}_block_init() {
+	// Skip block registration if Gutenberg is not enabled/merged.
+	if ( ! function_exists( 'register_block_type' ) ) {
+		return;
+	}
 	{{#plugin}}
 	$dir = dirname( __FILE__ );
 	{{/plugin}}