避免在Wordpress中的多个循环中重复自定义帖子类型的帖子

Question

我正在使用自定义帖子类型的投资组合（ID为3）运行两个循环。第一个循环用于精选，第二个循环用于其余部分。我计划以随机顺序发布超过3个精选帖子。我希望在第二个循环中显示未在第一个循环中显示的特色。我如何设置它以便没有重复的帖子？

<?php
/*
Template Name: Portfolio
*/
get_header(); ?>

    <div class="section-bg">

        <div class="portfolio">

            <div class="featured-title">
                <h1>featured</h1>
            </div> <!-- end #featured-title -->

            <div class="featured-gallery">

                <?php
                    $args = array( 'post_type' => 'portfolio', 'posts_per_page' => 3, 'cat' => 3, 'orderby' => 'rand' );
                    $loop = new WP_Query( $args );
                    while ( $loop->have_posts() ) : $loop->the_post();
                ?>

                    <div class="featured peek">
                        <a href="<?php the_permalink(); ?>">
                            <h1>
                                <?php 
                                $thetitle = $post->post_title; 
                                $getlength = strlen($thetitle); 
                                $thelength = 40;
                                echo substr($thetitle, 0, $thelength); 
                                if ($getlength > $thelength) echo '...'; ?>
                            </h1>
                            <div class="contact-divider"></div>
                            <p><?php the_tags('',' / '); ?></p>
                            <?php the_post_thumbnail('thumbnail', array('class' => 'cover')); ?>
                        </a>
                    </div> <!-- end .featured -->

                <?php endwhile; ?>

            </div> <!-- end .featured-gallery -->

            <div class="clearfix"></div>

        </div> <!-- end .portfolio -->

    </div> <!-- end #section-bg -->

    <div class="clearfix"></div>

    <div class="section-bg">

        <div class="portfolio-gallery">

            <?php
                $args = array( 'post_type' => 'portfolio', 'orderby' => 'rand');
                $loop = new WP_Query( $args );
                while ( $loop->have_posts() ) : $loop->the_post();
            ?>

                <div class="featured peek">
                    <a href="<?php the_permalink(); ?>">
                        <h1>
                            <?php 
                            $thetitle = $post->post_title; 
                            $getlength = strlen($thetitle); 
                            $thelength = 40;
                            echo substr($thetitle, 0, $thelength); 
                            if ($getlength > $thelength) echo '...'; ?>
                        </h1>
                        <div class="contact-divider"></div>
                        <p><?php the_tags('',' / '); ?></p>
                        <a href="<?php the_permalink(); ?>"><?php the_post_thumbnail('thumbnail', array('class' => 'cover')); ?></a>
                    </a>
                </div> <!-- end .featured -->

            <?php endwhile; ?>

            <div class="clearfix"></div>

        </div> <!-- end .portfolio-gallery -->

        <div class="clearfix"></div>

    </div> <!-- end #section-bg -->

<?php get_footer(); ?>

如果可能，答案是否可以概述如何将其实现到现有代码中？谢谢。 ：）

Answer 1

在第二个循环中，排除ID为3的猫。使用负值

 $args = array( 'post_type' => 'portfolio', 'posts_per_page' => 3, 'cat' => -3, 'orderby' => 'rand' );

请参阅codex以获取参考资料

Answer 2

我在http://webmasters-blog.com/how-to-avoid-duplicate-posts-in-multiple-loops/

上找到了解决方案

<?php
/*
Template Name: Portfolio
*/
get_header(); ?>

    <div class="section-bg">

        <div class="portfolio">

            <div class="featured-title">
                <h1>featured</h1>
            </div> <!-- end #featured-title -->

            <div class="featured-gallery">

                <?php
                    $ids = array();
                    $args = array( 'post_type' => 'portfolio', 'posts_per_page' => 3, 'cat' => 3, 'orderby' => 'rand' );
                    $loop = new WP_Query( $args );
                    while ( $loop->have_posts() ) : $loop->the_post();
                ?>

                    <div class="featured peek">
                        <a href="<?php the_permalink(); ?>">
                            <h1>
                                <?php 
                                $thetitle = $post->post_title; 
                                $getlength = strlen($thetitle); 
                                $thelength = 40;
                                echo substr($thetitle, 0, $thelength); 
                                if ($getlength > $thelength) echo '...'; ?>
                            </h1>
                            <div class="contact-divider"></div>
                            <p><?php the_tags('',' / '); ?></p>
                            <?php the_post_thumbnail('thumbnail', array('class' => 'cover')); ?>
                        </a>
                    </div> <!-- end .featured -->

                <?php $ids[]= $post->ID; endwhile; ?>

            </div> <!-- end .featured-gallery -->

            <div class="clearfix"></div>

        </div> <!-- end .portfolio -->

    </div> <!-- end #section-bg -->

    <div class="clearfix"></div>

    <div class="section-bg">

        <div class="portfolio-gallery">

            <?php
                $args = array( 'post_type' => 'portfolio', 'orderby' => 'rand');
                $loop = new WP_Query( $args );
                while ( $loop->have_posts() ) : $loop->the_post();
                if (!in_array($post->ID, $ids)) {
            ?>

                <div class="featured peek">
                    <a href="<?php the_permalink(); ?>">
                        <h1>
                            <?php 
                            $thetitle = $post->post_title; 
                            $getlength = strlen($thetitle); 
                            $thelength = 40;
                            echo substr($thetitle, 0, $thelength); 
                            if ($getlength > $thelength) echo '...'; ?>
                        </h1>
                        <div class="contact-divider"></div>
                        <p><?php the_tags('',' / '); ?></p>
                        <a href="<?php the_permalink(); ?>"><?php the_post_thumbnail('thumbnail', array('class' => 'cover')); ?></a>
                    </a>
                </div> <!-- end .featured -->

            <?php } endwhile; ?>

            <div class="clearfix"></div>

        </div> <!-- end .portfolio-gallery -->

        <div class="clearfix"></div>

    </div> <!-- end #section-bg -->

<?php get_footer(); ?>

如果有更清洁的方法去做，我仍然会感激反馈！

Answer 3

当然，有一件事你可以改进：

  $args = array( 'post_type' => 'portfolio', 'orderby' => 'rand', 'post__not_in' => $ids);
  $loop = new WP_Query( $args );
  while ( $loop->have_posts() ) : $loop->the_post();

并且......在你的functions.php中为the_title()添加一个过滤器也可以，做一下substr事情，这样你就可以简单地使用the_title()。

Answer 4

可能是此链接有助于防止重复的帖子 here