Advanced Custom Fields Pristine Field Uses

page.php

<!-- Text Field -->
<?php $field_name_slug = get_field("field_name_slug"); if ( !empty($field_name_slug) ): ?>
    <?php echo $field_name_slug; ?>
<?php endif; ?>


<!-- Image Field -->
<?php $image_field_name = get_field("image_field_name"); if ( $image_field_name ): ?>
    <img src="<?php echo $image_field_name["url"]; ?>" alt="<?php echo $image_field_name["title"]; ?>" />
<?php endif; ?>


<!-- Gallery Field -->
<?php $gallery_field_name = get_field("gallery_field_name"); if( $gallery_field_name ): ?>
    <div id="slider" class="flexslider">
        <ul class="slides">
            <?php foreach( $gallery_field_name as $image ): ?>
                <li>
                    <img src="<?php echo $image["url"]; ?>" alt="<?php echo $image["title"]; ?>">
                    <p class="caption"><?php echo $image["caption"]; ?></p>
                </li>
            <?php endforeach; ?>
        </ul>
    </div>
<?php endif; ?>


<!-- Repeater Field -->
<?php $repeater_field_name = get_field("repeater_field_name"); if ( $repeater_field_name ): ?>
    <?php foreach($repeater_field_name as $repeater_field_name_row): ?>
        <!-- Inner loop html here -->

        <?php // DEFINE THE SUBFIELDS: ?>
        <?php $sub_field_1 = $repeater_field_name_row['sub_field_1']; ?>
        <?php $sub_field_2 = $repeater_field_name_row['sub_field_2']; ?>
        <?php // ... more fields ... ?>

        <?php // USE THE SUBFIELDS: ?>
        <?php if ( !empty($sub_field_1) ): ?>
            <p><?php echo $sub_field_1; ?></p>
        <?php endif; ?>

        <?php if ( !empty($sub_field_2) ): ?>
            <p><?php echo $sub_field_2; ?></p>
        <?php endif; ?>

    <?php endforeach; ?>
<?php endif; ?>


<!-- Flexible Content Field -->
<?php if( have_rows('flexible_content_field_name') ): ?>
    <ul>
        <?php while ( have_rows('flexible_content_field_name') ): the_row(); ?>
            <?php if( get_row_layout() == 'first_row_layout_name' ): ?>
                <li>
                    <!-- Text Sub Field: -->
                    <?php $sub_field_name = get_sub_field('sub_field_name'); if ( !empty($sub_field_name) ): ?>
                        <?php echo $field_name_slug; ?>
                    <?php endif; ?>
                    <!-- Image Sub Field: -->
                    <?php $image_sub_field = get_sub_field("image_sub_field"); if ( $image_sub_field ): ?>
                        <img src="<?php echo $image_sub_field["url"]; ?>" alt="<?php echo $image_sub_field["title"]; ?>" />
                    <?php endif; ?>
                </li>
            <?php elseif( get_row_layout() == 'another_row_layout_name' ): ?>
                <!-- More html/fields here -->
            <?php endif; ?>
        <?php endwhile; ?>
    </ul>
<?php else: ?>
    <p>No layouts found</p>
<?php endif; ?>


<!-- Relationship Field -->
<?php $relationship_field = get_field('relationship_field'); if( $relationship_field ): ?>
    <ul>
    <?php foreach( $relationship_field as $related ): // variable must NOT be called $post (IMPORTANT) ?>
        <li>
            <a href="<?php echo get_permalink( $related->ID ); ?>">
                <?php echo get_the_title( $related->ID ); ?>
            </a>
            <!-- Custom field from $related: -->
            <?php $field_name = get_field("field_name", $related->ID); if ( !empty($field_name) ): ?>
                <?php echo $field_name; ?>
            <?php endif; ?>
        </li>
    <?php endforeach; ?>
    </ul>
<?php endif; ?>


<!-- Reverse Relationship Lookup -->
<?php

$related_posts = get_posts(array(
    'post_type' => 'book',
    'meta_query' => array(
        array(
            'key' => 'isbn_number', // name of custom field
            'value' => '"' . get_the_ID() . '"', // matches exactly "123", not just 123. This prevents a match for "1234"
            'compare' => 'LIKE'
        )
    )
));

?>

<?php if( $related_posts ): ?>
    <div class="related-books">
        <h2>Books</h2>
        <ul>
            <?php foreach( $related_posts as $related ): ?>
                <li>
                    <a href="<?php echo get_permalink( $related->ID ); ?>">
                        <?php echo get_the_title( $related->ID ); ?>
                    </a>
                    <!-- Custom field from $related: -->
                    <?php $field_name = get_field("field_name", $related->ID); if ( !empty($field_name) ): ?>
                        <?php echo $field_name; ?>
                    <?php endif; ?>
                </li>
            <?php endforeach; ?>
        </ul>
    </div>
<?php endif; ?>