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Nested repeater field query

  • Hello
    I have a site that is displaying a list of books in categories.
    I am using a repeater field for the categories and within that another repeater field for the list of books -each book has title, summary, image and link.

    The first category is always ‘Current Read’ which has 1 book in it.
    When there is a new current read, I have to delete that book and add it to one of the other categories.
    Ideally I would add a book to a category, if it is the current read there would be a checkbox in the nested repeater which would enable me to display that book before the loop.
    I suspect this isn’t going to be possible.
    Can anyone please help?

    Here is the code at the moment:

     <?php if( have_rows('book_recommendations') ): ?>
    	<div id="bookreclist">
    	<?php 
    // loop through rows (parent repeater)
    	while( have_rows('book_recommendations') ): the_row(); ?>
    	<div class="bookreccat">
    	<h2><?php the_sub_field('rec_category_title'); ?></h2>
    	<?php 
    /////// Book Recommendations
    	// check for rows (sub repeater)
    	     if( have_rows('book_rec_list') ): ?>
    		<ul>
    		<?php // loop through rows (sub repeater)
    		while( have_rows('book_rec_list') ): the_row();?>
    		    <li><a href="<?php the_sub_field('book_rec_link'); ?>" target="_blank"><img src="<?php the_sub_field('book_rec_image'); ?>" alt="<?php the_sub_field('book_rec_title'); ?>" /></a>
                            <h3><a href="<?php the_sub_field('book_rec_link'); ?>" target="_blank"><?php the_sub_field('book_rec_title'); ?></a></h3>
                             <?php the_sub_field('book_rec_summary'); ?>
                        </li>
    		<?php endwhile; ?>
    	        </ul>
                <?php endif; //if( get_sub_field('book_rec_list') ): ?>
    	</div>	<!-- .booklistcat -->
    <?php endwhile;?>
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