[wp-trac] [WordPress Trac] #56941: Fatal error produced by block using closure as render_callback

[WordPress Trac]

#56941: Fatal error produced by block using closure as render_callback
--------------------------+------------------------------
 Reporter:  andrewleap    |       Owner:  (none)
     Type:  defect (bug)  |      Status:  assigned
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Themes        |     Version:  6.1
 Severity:  blocker       |  Resolution:
 Keywords:                |     Focuses:
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Comment (by andrewleap):

 Apologies, This was my mistake. I was panicking as the new version is
 being released imminently .

 The culprit was actually this in my theme:


 {{{
 /**
  * Add a reference to block parent in render function.
  *
  * @param array $parsed_block Block data.
  */
 function xd_append_parent_block_data( $parsed_block ) {
         $block = new WP_Block( $parsed_block );
         foreach ( $parsed_block['innerBlocks'] as &$inner_block ) {
                 $inner_block['parent'] = array(
                         'name'  => $block->name,
                         'props' => $block->attributes,
                         'block' => $block,
                 );
         }
         return $parsed_block;
 }

 add_filter( 'render_block_data', 'xd_append_parent_block_data' );
 }}}


 We add a reference to the parent block in the block data as this allows us
 to contextually change the output in the render function. That parent
 block will also have a closure for its render callback function. Of
 Course, the block serialization that was recently added will not play nice
 when trying to serialize a callback.

 {{{#!php
 <?php
 function wp_get_elements_class_name( $block ) {
         return 'wp-elements-' . md5( serialize( $block ) );
 }
 }}}


 We can fix this with update to our plugin. Thanks for taking the time to
 look at this.

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/56941#comment:3>
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