This is very similar to the snippet example here here but it allows you to have a custom output function rather then creating a template part. It also allows you to override any of the default "blocks" with your custom output!
// This example adds a custom block/section to the blog entries front-end display
// If you wish to add the block to the Customizer layout settings use the "wpex_blog_entry_blocks" filter to do so
// IMPORTANT: Version 4.0+ required
add_filter( 'wpex_blog_entry_layout_blocks', function( $blocks ) {
// Example 1: Add new block with an anonymous function for the output
$blocks['my_custom_block_1'] = function() {
echo 'test';
};
// Example 2: Add new block with a custom function as the output
$blocks['my_custom_block_2'] = my_function_name();
// Example 3: Add new block with an anonymous function that returns a template part
$blocks['my_custom_block_3'] = function() {
get_template_part( 'your-template-part' );
};
// Example 4: Override the default featured_media block
$blocks['featured_media'] = function() {
echo 'My custom featured media';
};
// Return blocks
return $blocks;
} );