Raphaël Hertzog: How to create custom RSS feeds with WordPress
WordPress has many alternate built-in feeds: per category, per tag, per author, per search-keyword. But in some cases, you want feeds built with some more advanced logic. Let s look at the available options.
WordPress advanced built-in feeds
You can create feeds for unions or intersections of tags, you just have to use a URL like /tag/foo,bar/feed/ (all articles tagged with foo or bar) or /tag/foo+bar/feed/ (all articles tagged with foo and bar).
You can also have feeds excluding a category, although that requires you to know the category identifier (and hardcode it in the URL like this: /?feed=rss2&cat=-123 where 123 is the category id that you want to exclude).
But there s no simple way to have a feed that excludes articles with a given tag. The best solution found involves creating a custom feed. I ll show you a variation of this below.
Creating a custom feed
- First of, install the Feed Wrangler plugin, it will take care of registering our custom feeds with wordpress.
- Go to Settings > Feed Wrangler in your WordPress administrative interface and create a new feed, let s call it myfeed .
- You should now create a feed-myfeed.php file and put it in your current theme s directory. The initial content of that file should be this:
<?php include('wp-includes/feed-rss2.php'); ?>
- At this point, you already have a new feed that you can access at
/feed/myfeed/(or/?feed=myfeed). It s a complete feed like the main one.
<?php global $wp_query; $tag = get_term_by("slug", "foo", "post_tag"); $args = array_merge( $wp_query->query, array('tag__not_in' => array($tag->term_id)) ); query_posts($args); include('wp-includes/feed-rss2.php'); ?>
<?php global $wp_query; $excluded = array(); $args_excluded = array( 'numberposts' => -1, 'meta_key' => 'no_syndication', 'meta_value' => 1, 'post_type' => 'post', 'post_status' => 'published' ); foreach (get_posts($args_excluded) as $item) $excluded[] = $item->ID; $args = array_merge( $wp_query->query, array('post__not_in' => $excluded) ); query_posts($args); include('wp-includes/feed-rss2.php'); ?>
<?php function myfeed_add_footer($content) return $content . "<hr/>My footer here"; add_filter('the_content_feed', 'myfeed_add_footer'); include('wp-includes/feed-rss2.php'); ?>
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So, 2010 ended and it's now time for me to make a small summary for my
running activities.
At first, it's more and more obvious that running became an increasing
part of my life. Sometimes eating the free time I was using for Debian
work....and sometimes just filling holes in my daily activities, where
I was just doing nothing..:-)
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in about 196 hours (8.25 days) at an average speed of
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training as all official training plans do include slow runs. But, eh,
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3 half-marathons, 2 marathons and one long distance trail race (33km)
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