Feed modification

Easy.

function do_feed_myfeed($for_comments) {
// do whatever is needed to produce a feed here...
// Basically, like what is done in feed-rss2.php or feed-atom.php
}
add_action('do_feed_myfeed', 'do_feed_myfeed', 10, 1);

Make something like that into a plugin. If you make it load a separate template file like that, you should use the load_template() function to load that template file, like so:
load_template(ABSPATH.PLUGINDIR.'/your-plugin-name/myfeed.php');

Thx, but I think Ill take the road less traveled.

PS – when do you think the codex will be updated with 2.5 feed information?

Otto,
This is how I have been using feeds prior to 2.5:

in wp-feed.php

<?php

if (empty($doing_rss)) {
    $doing_rss = 1;
    require(dirname(__FILE__) . '/wp-blog-header.php');
}

// Remove the pad, if present.
$feed = preg_replace('/^_+/', '', $feed);

if ($feed == '' || $feed == 'feed') {
    $feed = 'rss2';
}

if ( is_single() || ($withcomments == 1) ) {
    require(ABSPATH . 'wp-commentsrss2.php');
} else {
    switch ($feed) {
    case 'atom':
        require(ABSPATH . 'wp-atom.php');
        break;
    case 'rdf':
        require(ABSPATH . 'wp-rdf.php');
        break;
    case 'rss':
        require(ABSPATH . 'wp-rss.php');
        break;
    case 'rss2':
        require(ABSPATH . 'wp-rss2.php');
        break;
    case 'comments-rss2':
        require(ABSPATH . 'wp-commentsrss2.php');
        break;
    case 'overview':
        require(ABSPATH . 'ssn-overview.php');
        break;
    case 'audience':
        require(ABSPATH . 'ssn-audience.php');
        break;
    case 'screens':
        require(ABSPATH . 'ssn-screens.php');
        break;
    case 'creative':
        require(ABSPATH . 'ssn-creative.php');
        break;
    case 'lp_overview';
        require(ABSPATH . 'ssn-lp-overview.php');
        break;
    case 'lp_ditl';
        require(ABSPATH . 'ssn-lp-ditl.php');
        break;
    case 'lp_activities';
        require(ABSPATH . 'ssn-lp-activities.php');
        break;
    case 'lp_research';
        require(ABSPATH . 'ssn-lp-research.php');
        break;
    case 'shortDesc';
        require(ABSPATH . 'ssn-shortDesc.php');
        break;
    case 'eh_overview';
        require(ABSPATH . 'ssn-eh-overview.php');
        break;
    case 'vc_overview';
        require(ABSPATH . 'ssn-vc-overview.php');
        break;
    case 'lph_overview';
        require(ABSPATH . 'ssn-lph-overview.php');
        break;
    case 'lp_relatedVenues';
        require(ABSPATH . 'ssn-lp-relatedVenues.php');
        break;
    }
}

?>

I am not versed in creating a plugin. I have looked at the codex and at some example plugins, but just ‘dont get it’ yet.

Here is what I am doing in 2.5 (functions.php):

function do_feed() {
	global $wp_query;

	$feed = get_query_var( 'feed' );

	// Remove the pad, if present.
	$feed = preg_replace( '/^_+/', '', $feed );

	if ( $feed == '' || $feed == 'feed' )
		$feed = get_default_feed();

	$hook = 'do_feed_' . $feed;
	if ( !has_action($hook) ) {
		$message = sprintf( __( 'ERROR: %s is not a valid feed template' ), wp_specialchars($feed));
		wp_die($message);
	}
	do_action( $hook, $wp_query->is_comment_feed );
}

/* Begin SSN Feeds */
function do_feed_audience() {
	load_template( ABSPATH . WPINC . '/ssn-audience.php' );
}
/* End SSN Feeds */

What I understand is that the url parameter is passed as a variable to the function call. so do_feed_audience should be called if the requested url is https://www.url.com/postOrPage/?feed=audience.

What returns is “ERROR: audience is not a valid feed template”

when I do this:

$hook = 'do_feed_' . $feed;
	if ( !has_action($hook) ) {
		do_feed_audience();
	}

The feed is displayed correctly.

Thoughts??

This problem drove me crazy too… the issue is you need to put
add_action(‘do_feed_myfeed’, ‘do_feed_myfeed’, 10, 1);
under actions in default-filters.php

Thankyou! I’ve been trying to figure this out for the last day or so.

Also, surprisingly easy to put into a plugin. Much more update-proof than editing the core files. Thanks!

Kristarella,
I would love to see your plugin to do this as I am plugin retarded!

best,
shua

Otto,

I don’t need a full customized feed, I just need to separate the Tags from Categories. It seems that WordPress puts them all in <Category>. Is there an easy way to do that, or do I need a new feed template?

Thanks
Steve