To be updated with changesWorking on a "Like" vs "Dislike" for blog post in WordPress. While all is working fine, the intention here is to make it work for guests and logged in users, but more importantly; to only allow one click (Like or Dislike) per post from the answer belowsame user (trying to understand if I can use WordPress sessions here?).
Idea:
Guest / registered and logged in user clicks on Like or Dislike = both button for that specific post are deactivated (cannot be clicked again). If the same user visits a different post on the same website where the user has not yet clicked any of the two buttons; they can click either Like or Dislike.
I hope I am being clear and that you all understand me. I'm looking for advice and code examples and what not as to how to achieve this.
As of now; a user (logged in or not) can click on Like or Dislike as many times as they want and the count just keeps on ticking -- which is NOT ideal.
This is the code I'm working on:
add_filter( 'the_content', 'post_likes' );
function post_likes( $content ) {
// only on posts
if ( is_singular( 'post' ) ) {
ob_start();
?>
<ul class="likes">
<li class="likes__item likes__item--like">
<a href="<?php echo add_query_arg( 'post_action', 'like'); ?>">
Useful (<?php echo get_post_like_count('likes') ?>)
</a>
</li>
<li class="likes__item likes__item--dislike">
<a href="<?php echo add_query_arg('post_action', 'dislike'); ?>">
Dislike (<?php echo get_post_like_count('dislikes') ?>)
</a>
</li>
</ul>
<?php
$output = ob_get_clean();
return $output . $content;
} else {
return $content;
}
}
function get_post_like_count( $type = 'likes' ) {
// like or dislike count
$current_count = get_post_meta( get_the_id(), $type, true );
return ( $current_count ? $current_count : 0 );
}
add_action( 'template_redirect', 'process_post_like_click' );
function process_post_like_click() {
$processed_like = false;
$redirect = false;
// Check if like or dislike
if ( is_singular( 'post' ) ) {
if ( isset( $_GET['post_action'] ) ) {
if ( $_GET['post_action'] == 'like' ) {
// Like
$like_count = get_post_meta( get_the_id(), 'likes', true );
if ( $like_count ) {
$like_count = $like_count + 1;
} else {
$like_count = 1;
}
$processed_like = update_post_meta( get_the_id(), 'likes', $like_count );
} elseif ( $_GET['post_action'] == 'dislike' ) {
// Dislike
$dislike_count = get_post_meta( get_the_id(), 'dislikes', true );
if ( $dislike_count ) {
$dislike_count = $dislike_count + 1;
} else {
$dislike_count = 1;
}
$processed_like = update_post_meta( get_the_id(), 'dislikes', $dislike_count );
}
if ( $processed_like ) {
$redirect = get_the_permalink();
// how do I deactivate both buttons on this post while keping them intact on other posts?
}
}
}
// redirect (refresh)
if ( $redirect ) {
wp_redirect( $redirect );
die;
}
}
Thanks all!
