wpml-comments-merging/wpml-comments-merging.php at master · poonasor/wpml-comments-merging · GitHub

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<?php
/*
Plugin Name: WPML Merged Comments
Plugin URI: https://github.com/poonasor/wpml-comments-merging/
Description: This plugin merges comments from all translations of the posts and pages, so that they all are displayed on each other. Comments are internally still attached to the post or page they were made on.
Version: 3.0
Author: Ricky Poon
Author URI: https://rickypoon.ca/
License: GPL

This is an updated version of the fixed version of the no longer maintained WPML Comment Merging plugin:
http://wordpress.org/extend/plugins/wpml-comment-merging/
Thanks to Simon Wheatley for contributing the fix.

Forked from: https://github.com/jgalea/wpml-comments-merging
*/
global $sitepress;
function sort_merged_comments($a, $b) {
	return $a->comment_ID - $b->comment_ID;
}
function merge_comments($comments, $post_ID) {
	// get all the languages for which this post exists
	$languages = icl_get_languages('skip_missing=1');
	$post = get_post( $post_ID );
	$type = $post->post_type;
	foreach($languages as $l) {
		// in $comments are already the comments from the current language
		if(!$l['active']) {
			$otherID = icl_object_id($post_ID, $type, false, $l['language_code']);
			//$othercomments = get_comments($otherID);
			$othercomments = get_approved_comments($otherID);
			$comments = array_merge($comments, $othercomments);
		}
	}
	if ($languages) {
		// if we merged some comments in we need to reestablish an order
		usort($comments, 'sort_merged_comments');
	}
	return $comments;
}
function merge_comment_count($count, $post_ID) {
	// get all the languages for which this post exists
	$languages = icl_get_languages('skip_missing=1');
	$post = get_post( $post_ID );
	$type = $post->post_type;
	foreach($languages as $l) {
		// in $count is already the count from the current language
		if(!$l['active']) {
			$otherID = icl_object_id($post_ID, $type, false, $l['language_code']);
			if($otherID) {
				// cannot use call_user_func due to php regressions
				if ($type == 'page') {
					$otherpost = get_page($otherID);
				} else {
					$otherpost = get_post($otherID);
				}
				if ($otherpost) {
					// increment comment count using translation post comment count.
					$count = $count + $otherpost->comment_count;
				}
			}
		}
	}
	return $count;
}
remove_filter('comments_clauses', array( $sitepress, 'comments_clauses' ), 10, 2);
add_filter('comments_array', 'merge_comments', 100, 2);
add_filter('get_comments_number', 'merge_comment_count', 100, 2);