Here is a php code that a guy made which can only display related posts with same post title.
It just display related posts but without links, thumbnails, author…
Maybe it’s possible to use a part of this code with yours ?
<?php
/*
Plugin Name: WPSE Get Duplicate Post Titles
Plugin URI: https://wordpress.stackexchange.com/q/220279/31545
Description: Displays posts with the same title in the sidear
Version: 1.0.0
Author: Pieter Goosen
Author URI: https://wordpress.stackexchange.com/users/31545/pieter-goosen
License: GPL2
License URI: https://www.gnu.org/licenses/gpl-2.0.html
*/
add_filter( 'posts_where', function ( $where, $q ) use ( &$wpdb )
{
// Get the value from our new wpse_title_match query var
$title_match = $q->get( 'wpse_title_match' );
// Make sure we have a value, if not, bail
if ( !$title_match )
return $where;
/**
* Lets alter the SQL WHERE clause
*
* Note, this will be an exact 1 to 1 match, adjust as necessary
*/
$where .= $wpdb->prepare(
" AND {$wpdb->posts}.post_title = %s ",
$title_match
);
return $where;
}, 10, 2 );
class WPSE_Get_Duplicate_Post_titles extends WP_Widget
{
public function __construct()
{
parent::__construct(
'widget_get_duplicate_post_titles',
_x( 'Post Title duplicates', 'Post Title duplicates' ),
[ 'description' => __( 'Displays posts which share the same post title.' ) ]
);
$this->alt_option_name = 'widget_get_duplicate_post_titles';
add_action( 'save_post', [$this, 'flush_widget_cache'] );
add_action( 'deleted_post', [$this, 'flush_widget_cache'] );
add_action( 'switch_theme', [$this, 'flush_widget_cache'] );
}
public function widget( $args, $instance )
{
$cache = [];
if ( ! $this->is_preview() ) {
$cache = wp_cache_get( 'widget_bpfi', 'widget' );
}
if ( ! is_array( $cache ) ) {
$cache = [];
}
if ( ! isset( $args['widget_id'] ) ) {
$args['widget_id'] = $this->id;
}
if ( isset( $cache[ $args['widget_id'] ] ) ) {
echo $cache[ $args['widget_id'] ];
return;
}
ob_start();
$title = ( ! empty( $instance['title'] ) ) ? $instance['title'] : __( 'Post Title Duplicates' );
/** This filter is documented in wp-includes/default-widgets.php */
$title = apply_filters( 'widget_title', $title, $instance, $this->id_base );
// ADD YOUR CUSTOM PHP CODE HERE FOR EXECUTION TO DISPLAY ON FRONT END
// First make sure this a single post page
if ( is_single() ) { // We are on a single page
// Get the current post object
$post_object = $GLOBALS['wp_the_query']->get_queried_object();
// Run our query to get the posts with duplicate titles
$args = [
'posts_per_page' => -1, // Get all posts
'post_type' => 'post',
'wpse_title_match' => $post_object->post_title,
'post__not_in' => [$post_object->ID], // Exclude current post
'tax_query' => [
[
'taxonomy' => 'category',
'field' => 'slug',
'terms' => 'chroniques'
]
],
// Any other arguments
];
$loop = new WP_Query( $args );
// Run the loop
if ( $loop->have_posts() ) {
while ( $loop->have_posts() ) {
$loop->the_post();
// Display your posts
the_title() . "\n";
}
wp_reset_postdata();
}
}
echo $args['after_widget'];
if ( ! $this->is_preview() ) {
$cache[ $args['widget_id'] ] = ob_get_flush();
wp_cache_set( 'widget_bpfi', $cache, 'widget' );
} else {
ob_end_flush();
}
}
public function update( $new_instance, $old_instance )
{
$instance = $old_instance;
$instance['title'] = strip_tags( $new_instance['title'] );
$this->flush_widget_cache();
$alloptions = wp_cache_get( 'alloptions', 'options' );
if ( isset($alloptions['widget_get_duplicate_post_titles']) )
delete_option('widget_get_duplicate_post_titles');
return $instance;
}
public function flush_widget_cache()
{
wp_cache_delete('widget_bpfi', 'widget');
}
public function form( $instance )
{
$title = isset( $instance['title'] ) ? esc_attr( $instance['title'] ) : '';
?>
<p>
<label for="<?php echo $this->get_field_id( 'title' ); ?>"><?php _e( 'Title:' ); ?></label>
<input class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" type="text" value="<?php echo $title; ?>" />
</p>
<?php
}
}
add_action( 'widgets_init', function ()
{
register_widget( 'WPSE_Get_Duplicate_Post_titles' );
});
add_filter( 'sidebars_widgets', function ( $sidebars_widgets )
{
// Return our filter when we are on admin screen
if ( is_admin() )
return $sidebars_widgets;
// Make sure we are not on the blog page, if we are, bail
if ( is_single() )
return $sidebars_widgets;
/**
* Widget we need to target. This should be the name/id we used to register it
*
* EXAMPLE
* parent::__construct(
'widget_get_duplicate_post_titles',
_x( 'Blog Page Featured Image', 'Blog page featured image' ),
[ 'description' => __( 'Displays the featured image for the pge set as blog page.' ) ]
);
*
*/
$custom_widget = 'widget_get_duplicate_post_titles';
// See if our custom widget exists is any sidebar, if so, get the array index
foreach ( $sidebars_widgets as $sidebars_key=>$sidebars_widget ) {
// Skip the wp_inactive_widgets set, we do not need them
if ( $sidebars_key == 'wp_inactive_widgets' )
continue;
// Only continue our operation if $sidebars_widget are not an empty array
if ( $sidebars_widget ) {
foreach ( $sidebars_widget as $k=>$v ) {
/**
* Look for our custom widget, if found, unset it from the $sidebars_widgets array
* @see stripos()
*/
if ( stripos( $v, $custom_widget ) !== false )
unset( $sidebars_widgets[$sidebars_key][$k] );
} // endforeach $sidebars_widget
} // endif $sidebars_widget
} // endforeach $sidebars_widgets
return $sidebars_widgets;
});
