如果没有要加载的帖子，请隐藏加载更多按钮

Question

在我的首页上，我每15个帖子后会显示一个加载更多按钮。它工作正常，如果没有任何东西可以加载，仍会显示加载更多按钮。当没有任何东西可以加载时，我只需要按一下按钮然后就会消失。但是如果没有剩余的帖子要加载，我宁愿只让负载更多的按钮不显示。有没有人对我如何解决这个问题有任何想法。

我的front-page.php

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<?php

get_header();
get_template_part ('post-template/trendingg'); 
?>



<script>
    var now=2; // when click start in page 2

    jQuery(document).on('click', '#load_more_btn', function () {

        jQuery.ajax({
            type: "POST",
            url: "<?php echo get_site_url(); ?>/wp-admin/admin-ajax.php",
            data: {
                action: 'my_load_more_function', // the name of the function in functions.php
                paged: now, // set the page to get the ajax request
                posts_per_page: 15  //number of post to get (use 1 for testing)
            },
            success: function (data) {

            if(data!=0){
                jQuery("#ajax").append(data);  // put the content into ajax container
                now=now+1; // add 1 to next page
            }else{
                jQuery("#load_more_btn").hide();
            }
            },
            error: function (errorThrown) {
                alert(errorThrown); // only for debuggin
            }
        });
    });
</script>

<section id="ajax"><!-- i have to change div to section, maybe a extra div declare -->
<?php

$the_query = new WP_Query( [
    'posts_per_page' => 15, // i use 1 for testing
        'orderby' => 'post_date',
'order' => 'DESC',
    'paged' => get_query_var('paged', 1) //page number 1 on load
] );

if ($the_query->have_posts()) {

        $i = 0;
        $j = 0;
        while ($the_query->have_posts()) {
            $the_query->the_post();

            if ( $i % 5 === 0 ) { // Large post: on the first iteration and every 7th post after... ?>
                <div class="row">
                    <article <?php post_class( 'col-sm-12 col-md-12' ); ?>>
                        <div class="large-front-container">
                            <a title="<?php the_title_attribute(); ?>" href="<?php the_permalink(); ?>"><?php the_post_thumbnail('full', array('class' => 'large-front-thumbnail')); ?></a>
                        </div>
                        <div class="front-page-date"><?php echo str_replace('mins', 'minutes', human_time_diff( get_the_time('U'), current_time('timestamp') ) . ' ago'); ?></div>
                        <div class="front-page-post-title"><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></div>
                        <p class="front-page-post-excerpt"><?php echo get_the_excerpt(); ?></p>
                        <div class="front-page-post-info">
                            <a class="moretext" href="<?php the_permalink(); ?>">Read more</a>
                            <?php get_template_part( 'includes/front-shop-the-post' ); ?>
                            <?php get_template_part( 'includes/share-buttons' ); ?>
                            <div class="front-comments"><?php comments_popup_link ('0', '1', '%', 'comment-count', 'none'); ?></div>
                        </div>
                    </article>
                </div>
            <?php } else { // Small posts ?>
                <?php if($j % 2 === 0){ echo '<div class="row">';} ?>
                <article <?php post_class( 'col-sm-6 col-md-6' ); ?>>
                    <div class="two-front-container">
                        <a title="<?php the_title_attribute(); ?>" href="<?php the_permalink(); ?>"><?php the_post_thumbnail('full', array('class' => 'medium-front-thumbnail')); ?></a>
                        <div>
                    <div class="front-page-date"><?php echo human_time_diff( get_the_time('U'), current_time('timestamp') ) . ' ago'; ?></div>
                    <div class="front-page-post-title"><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></div>
                    <p class="front-page-post-excerpt"><?php echo get_the_excerpt(); ?></p>
                    <div class="front-page-post-info">
                        <a class="moretext" href="<?php the_permalink(); ?>">Read more</a>
                        <?php get_template_part( 'includes/front-shop-the-post' ); ?>
                        <?php get_template_part( 'includes/share-buttons' ); ?>
                        <div class="front-comments"><?php comments_popup_link ('0', '1', '%', 'comment-count', 'none'); ?></div>
                    </div>
                </article>
                <?php $j++; if($j % 2 === 0){ echo '</div>';}?>
                <?php
            }
            $i++;
        }?>
    <?php
}?>
</section>

<button id="load_more_btn">Load More Posts</button> <!-- button out of ajax container for load content and button displayed at the bottom -->
<?php
get_footer();

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my functions.php

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//FRONT PAGE
add_action('wp_ajax_my_load_more_function', 'my_load_more_function');
add_action('wp_ajax_nopriv_my_load_more_function', 'my_load_more_function');

function my_load_more_function() {

    $query = new WP_Query( [
        'posts_per_page' => $_POST["posts_per_page"],
        'orderby' => 'post_date',
'order' => 'DESC',
        'paged' => get_query_var('paged', $_POST["paged"])
    ] );


    if ($query->have_posts()) {

        $i = 0;
        $j = 0;

        while ($query->have_posts()) {
                $query->the_post();

            if ( $i % 5 === 0 ) { // Large post: on the first iteration and every 7th post after... ?>
 <div class="row">
                    <article <?php post_class( 'col-sm-12 col-md-12' ); ?>>
                        <div class="large-front-container">
                            <a title="<?php the_title_attribute(); ?>" href="<?php the_permalink(); ?>"><?php the_post_thumbnail('full', array('class' => 'large-front-thumbnail')); ?></a>
                        </div>
                        <div class="front-page-date"><?php echo str_replace('mins', 'minutes', human_time_diff( get_the_time('U'), current_time('timestamp') ) . ' ago'); ?></div>
                        <div class="front-page-post-title"><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></div>
                        <p class="front-page-post-excerpt"><?php echo get_the_excerpt(); ?></p>
                        <div class="front-page-post-info">
                            <a class="moretext" href="<?php the_permalink(); ?>">Read more</a>
                            <?php get_template_part( 'includes/front-shop-the-post' ); ?>
                            <?php get_template_part( 'includes/share-buttons' ); ?>
                            <div class="front-comments"><?php comments_popup_link ('0', '1', '%', 'comment-count', 'none'); ?></div>
                        </div>
                    </article>
                </div>
            <?php } else { // Small posts ?>
                <?php if($j % 2 === 0) echo '<div class="row">'; ?>
                                <article <?php post_class( 'col-sm-6 col-md-6' ); ?>>
                    <div class="two-front-container">
                        <a title="<?php the_title_attribute(); ?>" href="<?php the_permalink(); ?>"><?php the_post_thumbnail('full', array('class' => 'medium-front-thumbnail')); ?></a>
                        <div>
                    <div class="front-page-date"><?php echo human_time_diff( get_the_time('U'), current_time('timestamp') ) . ' ago'; ?></div>
                    <div class="front-page-post-title"><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></div>
                    <p class="front-page-post-excerpt"><?php echo get_the_excerpt(); ?></p>
                    <div class="front-page-post-info">
                        <a class="moretext" href="<?php the_permalink(); ?>">Read more</a>
                        <?php get_template_part( 'includes/front-shop-the-post' ); ?>
                        <?php get_template_part( 'includes/share-buttons' ); ?>
                        <div class="front-comments"><?php comments_popup_link ('0', '1', '%', 'comment-count', 'none'); ?></div>
                    </div>
                </article>
                <?php $j++; if($j % 2 === 0) echo '</div>'; ?>
                <?php
            }
            $i++;

        }
        wp_reset_query();
    }else{
        return 0;
    }

    exit;
}

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Answer 1

您必须开始考虑要循环播放的帖子总数。如果你已经达到帖子的总数，那就意味着没有别的东西可以加载，虽然你可以不渲染按钮。

你必须创建一个关闭分页系​​统，以便在每种情况下知道你的位置。您需要知道当前查询的帖子总数中每个帖子的数量，这样您就知道是否到达了最后一个帖子。

查看此帖子，他们在查询中使用post_count： https://wordpress.stackexchange.com/questions/74920/post-count-only-shows-the-number-of-results-per-page