Use WP ajax to get latest news from rtcamp.com

See: #68

Author: Chandra Patel

admin/admin.php

@@ -133,9 +133,7 @@ function nginx_admin_enqueue_assets($hook) {
             wp_enqueue_style('rt-nginx-admin-css', plugin_dir_url(__FILE__) . 'assets/style.css');
 
             /* Load Plugin Scripts */
-            $admin_js = trailingslashit( site_url() ) . '?get_feeds=1';
             wp_enqueue_script( 'nginx-js', plugin_dir_url( __FILE__ ) . 'assets/nginx.js', '', '', true );
-            wp_localize_script( 'nginx-js', 'news_url', $admin_js );
         }
     }
 }

admin/assets/nginx.js

@@ -1,7 +1,7 @@
 jQuery( document ).ready( function() {
 	var news_section = jQuery( '#latest_news' );
 	if ( news_section.length > 0 ) {
-		jQuery.get( news_url, function( data ) {
+		jQuery.get( ajaxurl, { action: 'rt_nginx_get_news' }, function( data ) {
 			news_section.find( '.inside' ).html( data );
 		} );
 	}

nginx-helper.php

@@ -401,44 +401,61 @@ function nginx_settings_link( $links )
 		add_filter( "plugin_action_links_" . plugin_basename( __FILE__ ), 'nginx_settings_link' );
 	}
 
-	function get_feeds( $feed_url = 'http://rtcamp.com/blog/feed/' )
-	{
-		// Get RSS Feed(s)
+	/**
+	 * Get latest news from https://rtcamp.com
+	 *
+	 * @return void
+	 */
+	function rt_nginx_get_news() {
+
+		$is_rt_news_request = sanitize_text_field( filter_input( INPUT_GET, 'action' ) );
+
+		if ( empty( $is_rt_news_request ) || 'rt_nginx_get_news' !== $is_rt_news_request ) {
+			return;
+		}
+
+		$feed_url = 'http://rtcamp.com/blog/feed/';
+
+		// Get RSS Feed.
 		require_once( ABSPATH . WPINC . '/feed.php' );
+
 		$maxitems = 0;
+
 		// Get a SimplePie feed object from the specified feed source.
 		$rss = fetch_feed( $feed_url );
-		if ( !is_wp_error( $rss ) ) { // Checks that the object is created correctly
+
+		// Checks that the object is created correctly.
+		if ( ! is_wp_error( $rss ) ) {
+
 			// Figure out how many total items there are, but limit it to 5.
 			$maxitems = $rss->get_item_quantity( 5 );
 
 			// Build an array of all the items, starting with element 0 (first element).
 			$rss_items = $rss->get_items( 0, $maxitems );
 		}
-		?>
-		<ul role="list"><?php
-			if ( $maxitems == 0 ) {
-				echo '<li role="listitem">' . __( 'No items', 'nginx-helper' ) . '.</li>';
+	?>
+		<ul role="list">
+			<?php
+			if ( 0 === $maxitems ) {
+				echo '<li role="listitem">' . esc_html__( 'No items', 'nginx-helper' ) . '.</li>';
 			} else {
 				// Loop through each feed item and display each item as a hyperlink.
 				foreach ( $rss_items as $item ) {
-					?>
+			?>
 					<li role="listitem">
-						<a href='<?php echo $item->get_permalink(); ?>' title='<?php echo __( 'Posted ', 'nginx-helper' ) . $item->get_date( 'j F Y | g:i a' ); ?>'><?php echo $item->get_title(); ?></a>
-					</li><?php
+						<a href='<?php echo esc_url( $item->get_permalink() ); ?>' title='<?php echo esc_attr__( 'Posted ', 'nginx-helper' ) . esc_attr( $item->get_date( 'j F Y | g:i a' ) ); ?>'>
+							<?php echo esc_html( $item->get_title() ); ?>
+						</a>
+					</li>
+			<?php
 				}
 			}
 			?>
-		</ul><?php
+		</ul>
+	<?php
+		die();
 	}
 
-	function fetch_feeds()
-	{
-		if ( isset( $_GET['get_feeds'] ) && $_GET['get_feeds'] == '1' ) {
-			get_feeds();
-			die();
-		}
-	}
+	add_action( 'wp_ajax_rt_nginx_get_news', 'rt_nginx_get_news' );
 
-	add_action( 'init', 'fetch_feeds' );
 }