ACF Filters Post

block-cta-with-filters.php

<?php
/**
 * The template used for displaying a CTA block.
 *
 * @package _s
 */

// Set up fields.
$title           = get_sub_field( 'title' );
$text            = get_sub_field( 'text' );
$button_url      = get_sub_field( 'button_url' );
$button_text     = get_sub_field( 'button_text' );
$animation_class = _s_get_animation_class();

// Store our block args so we can filter them later.
$default_args = array(
	'title'           => $title,
	'button_url'      => $button_url,
	'button_text'     => $button_text,
	'animation_class' => $animation_class,
	'container_class' => '',
);

// Filter our args.
$block_args = array_merge( $default_args, apply_filters( '_s_cta_block_args', $default_args ) );

// Start a <container> with possible block options.
_s_display_block_options(
	array(
		'container' => 'section', // Any HTML5 container: section, div, etc...
		'class'     => 'content-block grid-container call-to-action' . esc_attr( $block_args['container_class'] ), // Container class.
	)
);
?>
	<div class="grid-x<?php echo esc_attr( $block_args['animation_class'] ); ?>">
		<div class="cell">
			<?php if ( $block_args['title'] ) : ?>
				<h3 class="cta-title"><?php echo esc_html( $block_args['title'] ); ?></h3>
			<?php endif; ?>

			<?php if ( $block_args['text'] ) : ?>
				<h4 class="cta-text"><?php echo esc_html( $block_args['text'] ); ?></h4>
			<?php endif; ?>
		</div>

		<div class="cell">
			<?php if ( $block_args['button_url'] && $block_args['button_text'] ) : ?>
				<a class="button cta-button" href="<?php echo esc_url( $block_args['button_url'] ); ?>"><?php echo esc_html( $block_args['button_text'] ); ?></a>
			<?php endif; ?>
		</div>
	</div><!-- .grid-x -->
</section><!-- .cta-block -->

block-cta.php

<?php
/**
 * The template used for displaying a CTA block.
 *
 * @package _s
 */

// Set up fields.
$title           = get_sub_field( 'title' );
$text            = get_sub_field( 'text' );
$button_url      = get_sub_field( 'button_url' );
$button_text     = get_sub_field( 'button_text' );
$animation_class = _s_get_animation_class();

// Start a <container> with possible block options.
_s_display_block_options(
	array(
		'container' => 'section', // Any HTML5 container: section, div, etc...
		'class'     => 'content-block grid-container call-to-action', // Container class.
	)
);
?>
	<div class="grid-x<?php echo esc_attr( $animation_class ); ?>">
		<div class="cell">
			<?php if ( $title ) : ?>
				<h3 class="cta-title"><?php echo esc_html( $title ); ?></h3>
			<?php endif; ?>

			<?php if ( $text ) : ?>
				<h4 class="cta-text"><?php echo esc_html( $text ); ?></h4>
			<?php endif; ?>
		</div>

		<div class="cell">
			<?php if ( $button_url && $button_text ) : ?>
				<a class="button cta-button" href="<?php echo esc_url( $button_url ); ?>"><?php echo esc_html( $button_text ); ?></a>
			<?php endif; ?>
		</div>
	</div><!-- .grid-x -->
</section><!-- .cta-block -->

cta-block-filters.php

/**
 * Filters the args in the CTA block on the Customers Archive.
 *
 * @param array $block_args The default args of our block.
 * @return array The updated arguments for our block.
 * @author Corey Collins
 */
function _s_filter_customer_archive_cta( $block_args = array() ) {

	// Bail if we're not on our specific category.
	if ( ! has_category( 'great-category' ) ) {
		return $block_args;
	}

	// Set our values.
	return array(
		'title'           => __( 'Great Category? More like Best Category!', '_s' ),
		'button_text'     => __( 'Learn More About This Very Special Category', '_s' ),
		'button_url'      => 'https://webdevstudios.com/an-alternate-url',
		'container_class' => ' cta-great-category',
	);
}
add_filter( '_s_cta_block_args', '_s_filter_customer_archive_cta' );