Ratings Plugin

ci-star-rating.php

<?php
/*
Plugin Name: CI Comment Rating
Description: Adds a star rating system to WordPress comments
Version: 1.0.0
Author: The CSSIgniter Team
Author URI: https://cssigniter.com/
*/

//Enqueue the plugin's styles.
add_action( 'wp_enqueue_scripts', 'ci_comment_rating_styles' );
function ci_comment_rating_styles() {

	wp_register_style( 'ci-comment-rating-styles', plugins_url( '/', __FILE__ ) . 'assets/style.css' );

	wp_enqueue_style( 'dashicons' );
	wp_enqueue_style( 'ci-comment-rating-styles' );
}

//Create the rating interface.
add_action( 'comment_form_logged_in_after', 'ci_comment_rating_rating_field' );
add_action( 'comment_form_after_fields', 'ci_comment_rating_rating_field' );
function ci_comment_rating_rating_field () {
	?>
	<label for="rating">Rating<span class="required">*</span></label>
	<fieldset class="comments-rating">
		<span class="rating-container">
			<?php for ( $i = 5; $i >= 1; $i-- ) : ?>
				<input type="radio" id="rating-<?php echo esc_attr( $i ); ?>" name="rating" value="<?php echo esc_attr( $i ); ?>" /><label for="rating-<?php echo esc_attr( $i ); ?>"><?php echo esc_html( $i ); ?></label>
			<?php endfor; ?>
			<input type="radio" id="rating-0" class="star-cb-clear" name="rating" value="0" /><label for="rating-0">0</label>
		</span>
	</fieldset>
	<?php
}

//Save the rating submitted by the user.
add_action( 'comment_post', 'ci_comment_rating_save_comment_rating' );
function ci_comment_rating_save_comment_rating( $comment_id ) {
	if ( ( isset( $_POST['rating'] ) ) && ( '' !== $_POST['rating'] ) )
	$rating = intval( $_POST['rating'] );
	add_comment_meta( $comment_id, 'rating', $rating );
}

//Make the rating required.
add_filter( 'preprocess_comment', 'ci_comment_rating_require_rating' );
function ci_comment_rating_require_rating( $commentdata ) {
	if ( ! is_admin() && ( ! isset( $_POST['rating'] ) || 0 === intval( $_POST['rating'] ) ) )
	wp_die( __( 'Error: You did not add a rating. Hit the Back button on your Web browser and resubmit your comment with a rating.' ) );
	return $commentdata;
}

//Display the rating on a submitted comment.
add_filter( 'comment_text', 'ci_comment_rating_display_rating');
function ci_comment_rating_display_rating( $comment_text ){

	if ( $rating = get_comment_meta( get_comment_ID(), 'rating', true ) ) {
		$stars = '<p class="stars">';
		for ( $i = 1; $i <= $rating; $i++ ) {
			$stars .= '<span class="dashicons dashicons-star-filled"></span>';
		}
		$stars .= '</p>';
		$comment_text = $comment_text . $stars;
		return $comment_text;
	} else {
		return $comment_text;
	}
}

//Get the average rating of a post.
function ci_comment_rating_get_average_ratings( $id ) {
	$comments = get_approved_comments( $id );

	if ( $comments ) {
		$i = 0;
		$total = 0;
		foreach( $comments as $comment ){
			$rate = get_comment_meta( $comment->comment_ID, 'rating', true );
			if( isset( $rate ) && '' !== $rate ) {
				$i++;
				$total += $rate;
			}
		}

		if ( 0 === $i ) {
			return false;
		} else {
			return round( $total / $i, 1 );
		}
	} else {
		return false;
	}
}

//Display the average rating above the content.
add_filter( 'the_content', 'ci_comment_rating_display_average_rating' );
function ci_comment_rating_display_average_rating( $content ) {

	global $post;

	if ( false === ci_comment_rating_get_average_ratings( $post->ID ) ) {
		return $content;
	}
	
	$stars   = '';
	$average = ci_comment_rating_get_average_ratings( $post->ID );

	for ( $i = 1; $i <= $average + 1; $i++ ) {
		
		$width = intval( $i - $average > 0 ? 20 - ( ( $i - $average ) * 20 ) : 20 );

		if ( 0 === $width ) {
			continue;
		}

		$stars .= '<span style="overflow:hidden; width:' . $width . 'px" class="dashicons dashicons-star-filled"></span>';

		if ( $i - $average > 0 ) {
			$stars .= '<span style="overflow:hidden; position:relative; left:-' . $width .'px;" class="dashicons dashicons-star-empty"></span>';
		}
	}
	
	$custom_content  = '<p class="average-rating">This post\'s average rating is: ' . $average .' ' . $stars .'</p>';
	$custom_content .= $content;
	return $custom_content;
}

how to get full rating? I dont want average rating...

Hello. What do you mean by full rating? The plugin will display each user's rating on their comment and the average above the content. What would you like to display?