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Heartbeat Sample plugin
<?php
/*
Plugin Name: Heartbeat Comment Update
Description: Updates Comment Count on Dashboard with Heartbeat.
Author: Andrew Ozz, Mike Schroder
Version: 0.2
Author URI: http://www.getsource.net
*/
add_filter( 'heartbeat_received', 'wc_heartbeat_comment_count', 10, 3 );
function wc_heartbeat_comment_count( $response, $data, $screen_id ) {
// Check if we are on the right screen and data is requested.
if ( $screen_id == 'dashboard' &&
isset( $data['wc-comment-heartbeat'] ) ) {
// Grab our data
$num_comments = wp_count_comments();
// Add data in an unique array key -- prefix!
$response['wc-comment-count'] = array(
'comment-count' => number_format_i18n($num_comments->total_comments),
'pending-count' => number_format_i18n($num_comments->moderated),
'comment-mod-count' => number_format_i18n($num_comments->moderated),
'spam-count' => number_format_i18n($num_comments->spam),
'trash-count' => number_format_i18n($num_comments->trash),
);
}
// If the above conditions aren't met, we pass along the existing $response.
return $response;
}
add_action( 'admin_enqueue_scripts', 'wc_heartbeat_comment_script_enqueue' );
function wc_heartbeat_comment_script_enqueue( $hook_suffix ) {
// Load this script only in the dashboard.
if ( 'index.php' != $hook_suffix )
return;
// Make sure the JS part of the Heartbeat API is loaded.
wp_enqueue_script( 'heartbeat' );
// Output the JavaScript we need.
add_action( 'admin_print_footer_scripts', 'wc_heartbeat_comment_js', 20 );
}
function wc_heartbeat_comment_js() {
?>
<script>
jQuery(document).ready( function($) {
// Request comment count, using prefixed custom event.
$(document).on( 'heartbeat-send.wp-comment-count', function( e, data ) {
// For one-time send, use wp.heartbeat.enqueue( 'item', 'value' );
data['wc-comment-heartbeat'] = 'count';
// Speed up heartbeat for faster results.
// Only has to be called every 2.5 minutes.
window.wp.heartbeat.interval(15);
// Listen for the tick custom event.
}).on( 'heartbeat-tick.wc-comment-count', function( e, data ) {
// Double-check we have the data we're listening for
if ( ! data['wc-comment-count'] )
return;
// Replace all of the comment counts
$.each( data['wc-comment-count'], function( key, value ) {
var replaced = $( '.' + key ).html().replace(/(.*)\d+(.*)/g, "$1" + value + "$2");
$( '.' + key ).html( replaced );
});
});
// Initial connection to cement our new interval timing
window.wp.heartbeat.connectNow();
});
</script>
<?php
}
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