How to get the all post_id where delete post? Wordpress - php

Question

I am making a function in a plugin and the function will delete the database row when the post move to the trash bin. However, I cannot get the post_id using get_posts().
Here is my code:
function delete_condition($post)
{
global $wpdb;
$allposts = get_posts(array(
'numberposts' => -1,
'category' => 0, 'orderby' => 'date',
'order' => 'DESC', 'include' => array(),
'exclude' => array(), 'meta_key' => '',
'meta_value' =>'', 'post_type' => 'job',
'suppress_filters' => true));
foreach( $allposts as $postinfo ) {
$wpdb->delete('rule', array('post_id' => $postinfo));
}
}
add_action('wp_trash_post', 'delete_condition', 10, 1);
thanks

Answer 1

The action hook you're using here, wp_trash_post, passes the $post_id to the function as a parameter. See: https://codex.wordpress.org/Plugin_API/Action_Reference/trash_post
It sounds like you want to delete all rows from one table that have the same post ID as the one being trashed.
I think you might want to write something like this:
function delete_condition( $post_id ) {
global $wpdb;
// Delete rows in the rule table which have the same post_id as this one
if ( 'job' === get_post_type( $post_id ) ) {
$wpdb->delete('rule', array('post_id' => $post_id ) );
}
}
add_action('wp_trash_post', 'delete_condition', 10, 1);

Answer 2

$postinfo is the object. You want only the ID of post. So you should write $postinfo->ID. Replace your loop with the below -
foreach( $allposts as $postinfo ) {
$postinfoID = $postinfo->ID;
$wpdb->delete('rule', array('post_id' => $postinfoID));
}

Answer 3

<?php
function delete_condition($post)
{
global $wpdb;
$allposts = get_posts(array(
'numberposts' => -1,
'post_status' => 'any',
'category' => 0, 'orderby' => 'date',
'order' => 'DESC', 'include' => array(),
'exclude' => array(), 'meta_key' => '',
'meta_value' =>'', 'post_type' => 'job',
'suppress_filters' => true));
foreach( $allposts as $postinfo ) {
$wpdb->delete('rule', array('post_id' => $postinfo));
}
}
add_action('wp_trash_post', 'delete_condition', 10, 1);
?>