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Equivalent to has_block for use in templates #38120

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colinduwe opened this issue Jan 21, 2022 · 3 comments
Closed

Equivalent to has_block for use in templates #38120

colinduwe opened this issue Jan 21, 2022 · 3 comments
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[Type] Question Questions about the design or development of the editor.

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@colinduwe
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What problem does this address?

In a block theme, I would like to be able to determine if the template includes a block. In post content the has_block() function does that. My use case is to enqueue some JS in the case the pagination block is in the template.

This is similar to #14758

What is your proposed solution?

Is there a function that would return the current template as string to pass to has_block()?
@karmatosed karmatosed added the [Type] Question Questions about the design or development of the editor. label Jan 21, 2022
@aristath
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In a block theme, all blocks are parsed before the <head>. What that means, is ou can hook in render_block, and enqueue your script if the block exists.
Example:

add_filter( 'render_block', function( $block_content, $block ) {
	// Make sure we have the blockName.
	if ( empty( $block['blockName'] ) ) {
		return $block_content;
	}

	// If this is a pagination block, enqueue the pagination script.
	if (
		'core/query-pagination' === $block['blockName'] ||
		'core/query-pagination-next' === $block['blockName'] ||
		'core/query-pagination-previous' === $block['blockName'] ||
		'core/query-pagination-numbers' === $block['blockName']
	) {
		wp_enqueue_script( 'my-pagination-script' );
	}

	// Return the block content.
	return $block_content;
}, 10, 2 );
@colinduwe
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Thank you!
@rku4er
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rku4er commented Sep 7, 2022

Is there a similar solution that works in site editor?
@CGastrell CGastrell mentioned this issue Sep 10, 2023
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Labels
[Type] Question Questions about the design or development of the editor.
4 participants
@karmatosed @aristath @colinduwe @rku4er