Tips & Tricks
Turn your RSS feed into a shortcode
Last week I wrote how to “Use WordPress to print a RSS feed for Eventbrite attendees“. It was pretty popular, but then I found myself in a place that was more annoying. Trying to incorporate that into a blog post or page.
Without having to download a plugin that will allow PHP to be executed inside a post, I would have to create a template file and use that. Which is what I did, and it works just fine. But for some reason I forgot all about shortcodes! With a shortcode, I could generate all the PHP in the functions file and then just call the shortcode when/where I want.
Okay, so lets show the completed PHP code:
function attendee_feed_print_2009() { global $wpdb; include_once( ABSPATH . WPINC . '/rss.php' ); $rss = fetch_rss( 'http://www.eventbrite.com/rss/event_list_attendees/384870157' ); $items = array_slice( $rss->items, 0 ); if ( empty( $items ) ) echo '<ul style="list-style-type: none; list-style-image: none; list-style-position: outside;"><li>No items</li></ul>'; else foreach ( $items as $item ) : ?> <ul style="list-style-type:none; list-style-image:none; list-style-position:outside; margin-bottom: 0px"> <li><!--<strong><?php echo $item[ 'title' ]; //User name ?></strong><br />--> <?php echo $item[ 'content' ][ 'encoded' ]; ?> <hr style="border: 1px solid #ddd; margin-bottom: 8px" /> </li> </ul> <?php endforeach; }
Now, this code has to be changed for it to work as a shortcode. We’ll have to return the function and not print/echo it.
I also wanted to be able to use multiple instances of the code with different feeds. To do so I had to create a argument to extract from the completed short code. I found a demo at: Alex Mansfield’s post.
Remember this:
function attendee_feed_print_2009() { global $wpdb; include_once( ABSPATH . WPINC . '/rss.php' ); $rss = fetch_rss( 'http://www.eventbrite.com/rss/event_list_attendees/384870157' );
We are going to update it to read as follows ( changes in bold ) :
function attendee_feed_print_2009( $rss_nbr ) { global $wpdb; extract( shortcode_atts( array( 'rss' => ''), $rss_nbr ) ); include_once( ABSPATH . WPINC . '/rss.php' ); $rss = fetch_rss( $rss );
And the final code with the fields updated to return the arguments ( put into your functions.php file ( in between <?php
?>
) ) :
function attendee_feed_print_2009( $rss_nbr ) { global $wpdb; extract( shortcode_atts( array( 'rss' => ''), $rss_nbr ) ); include_once( ABSPATH . WPINC . '/rss.php' ); $rss = fetch_rss( $rss ); $items = array_slice( $rss->items, 0 ); $rss_html = '<div id="eventbrite-attendee-list" style="clear:both;">'; if ( empty( $items ) ) $rss_html .= '<ul style="list-style:none;"><li>No attendees, yet.</li></ul>'; else foreach ( $items as $item ) : $rss_html .= '<ul style="background:none; list-style:none; margin:0px">'; $rss_html .= '<li style="background:none; list-style:none;">'; $rss_html .= $item[ 'content' ][ 'encoded' ]; $rss_html .= '<hr style="border: 1px solid #ddd; margin-bottom: 10px" />'; $rss_html .= '</li>'; $rss_html .= '</ul>'; endforeach; $rss_html .= '</div>'; return $rss_html; }
And lets not forget to add the shortcode function!
add_shortcode( 'eventbrite-attendees', 'attendee_feed_print_2009' );
Final outcome with look like this `[eventbrite-attendees rss="http://your-rss-feed.com/"]`
I’ve created this into a plugin!
Download the plugin: http://wordpress.org/extend/plugins/eventbrite-attendees-shortcode/
Tips & Tricks
How to: Display RSS feeds from anywhere
Here is a simple way to display any RSS feed in your WordPress blog.
<?php include_once(ABSPATH . WPINC . '/rss.php'); $rss = fetch_rss('http://feeds2.feedburner.com/WPCult'); $items = array_slice($rss->items, 0, 4); if (empty($items)) echo '<li>No items</li>'; else foreach ( $items as $item ) : ?> <a style="font-size: 14px;" href='<?php echo $item['link']; ?>' title='<?php echo $item['title']; ?>'><?php echo $item['title']; ?></a><br /> <p style="font-size: 10px; color: #aaa;"><?php echo date('F, j Y',strtotime($item['pubdate'])); ?></p> <p><?php echo substr($item['summary'],0,strpos($item['summary'], "This is a post from")); ?></p> <?php endforeach; ?>
The first step is to include the WordPress file rss.php
then will apply code after to style the feeds.
Of coarse I forgot to mention, change the RSS feed to the feed you want to pull.
Tips & Tricks
Remove the title attribute using jQuery
In WordPress, when you use wp_page_menu
your anchor attribute’s usually carry a title with the same name. I’m not sure if it’s correct to do this, but it bother me when I hover over a page menu navigation link and I get a hover of the title.
So on my site I used jQuery to remove the title:
$("#nav a").removeAttr("title");
Pretty simple huh?
Tips & Tricks
How to: Open external links in a new window
Over the weekend, I attended WordCamp Denver, and I was asked by John Hawkins how to force links to open in a new tab with out editing the source code. So, today lets learn a simple jQuery trick to open all external links in your site in a new tab or window. We are going to make sure you have jQuery active on your site, you can do this easily in WordPress, since it’s bundled with the latest installations. Use this code in your header: <?php wp_enqueue_script('jquery'); ?>
then, below the wp_head
add the following:
<script type="text/javacript"> var $j = jQuery.noConflict(); $j(document).ready(function() { //external attribute $j("a:not([@href*=http://YOURSITE.com/])").not("[href^=#]") .addClass("external") .attr({ target: "_blank" }); } ); </script>
That’s it, just make sure you change the http://YOURSITE.com to your website.
Update
If you like you can remove the var $j =
and replace all $j
with simply just $
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