WP - 在 wp_insert_post 之前检查帖子是否存在 [英] WP - check if post exists before wp_insert_post

问题描述

如何在wp_insert_post之前检查帖子是否存在以避免重复?

How to check if the post exists before wp_insert_post to avoid duplication?

如果我删除if"语句(post_exists())并继续重新插入产生多个重复的帖子，则下面的代码有效.我用 post_exists() 编写了 if 语句只是为了开始实现检查的逻辑，但是当我添加 if 语句时，有些东西中断了，下面的列表甚至没有打印出来.

The code below works if I remove the 'if' statement (post_exists()) and just keep reinserting posts producing multiple duplications. I wrote the if-statement with post_exists() just to start implementing the logic of checking but the moment I add the if statement, something breaks and the list below doesn't even get printed.

 $body = wp_remote_retrieve_body( $request ); 
  $data = json_decode(utf8ize($body), true); 
  $data_events = $data['events'];

  if( ! empty( $data_events ) ) {
    echo '<ul>';
        foreach( $data_events as $event ) {
        // the if statement below seems to break things ie. no li below printed.
        if ( post_exists( $event['name'] ) == 0 ) {
          echo 'exists';
        } else {
          echo 'doesnt exist';
        }

        echo '<li>';
        echo $event['id'];
                echo '<a href="' . esc_url( $event['uri'] ) . '">' . $event['name'] . '</a>';
        echo '</li>';

        $new_post = array(
          'post_title' => $event['name'],
          'post_content' => 'description',
          'post_status' => 'publish',
          'post_author' => '2',
          'post_type' => 'post',
          'post_category' => array(1),
          'meta_input' => array(
            'hq_id' => $event['id'],
          )
      );
      //wp_insert_post($new_post); // commented out while testing the if statement.



        }
      echo '</ul>';
  }

?>

请查看 $data_events 数组:https://pastebin.com/rC60iNyJ

please see the $data_events array: https://pastebin.com/rC60iNyJ

推荐答案

post_exists() 函数在前端通常不可用.您可以使用 get_page_by_title 来按标题查找帖子，而不是包含另一个文件.只需测试 null 值以检查它是否不存在.

The post_exists() function is not normally available on the front end. Instead of including another file you can use get_page_by_title to find a post by it's title. Just test for a null value to check if it doesn't exist.

替换

if ( post_exists( $event['name'] ) == 0 ) {

与

if ( get_page_by_title( $event['name'] ) == null ) {

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