Remove posts with category (or categories) from BuddyPress Activity Stream

gistfile1.aw

<?php

// Move the bp_blogs_record_post action to the later wp_insert_post, so that in_category will return the correct result.
if ( ! function_exists( 'ucc_wp_insert_post_bp_blogs_record_post' ) ) {
function ucc_wp_insert_post_bp_blogs_record_post() {
	remove_action( 'save_post', 'bp_blogs_record_post', 10, 2 );
	add_action( 'wp_insert_post', 'bp_blogs_record_post', 10, 2 );
} }
add_action( 'init', 'ucc_wp_insert_post_bp_blogs_record_post' );

// Set hide_sitewide to true if the activity should be excluded.
if ( ! function_exists( 'ucc_bp_activity_before_save' ) ) {
function ucc_bp_activity_before_save( &$args ) {
	global $wpdb;

	if ('new_blog_post' == $args->type ) {
		$post_id = $args->secondary_item_id;
		$comment_ids = array();
		$comments = get_comments( "post_id=$post_id" );
		foreach ( $comments as $comment ) {
			$comment_ids[] = $comment->comment_ID;
		}
		if ( in_category( 'exclude-me', $post_id ) ) {
			$args->hide_sitewide = true;
			if ( ! empty( $comment_ids ) ) {
				$result = $wpdb->query( $wpdb->prepare( "UPDATE $wpdb->prefix" . "bp_activity SET hide_sitewide = 1 WHERE secondary_item_id IN (" . implode( ',', $comment_ids ) . ")" ) );
			}
		} else {
			$args->hide_sitewide = false;
			if ( ! empty( $comment_ids ) ) {
				$result = $wpdb->query( $wpdb->prepare( "UPDATE $wpdb->prefix" . "bp_activity SET hide_sitewide = 0 WHERE secondary_item_id IN (" . implode( ',', $comment_ids ) . ")" ) );
			}
		}
	}
	
	if ( 'new_blog_comment' == $args->type ) {
		$comment_id = $args->secondary_item_id;

		$comment = get_comment( $comment_id );
		if ( in_category( 'exclude-me', $comment->comment_post_ID ) ) {
			$args->hide_sitewide = true;
		} else {
			$args->hide_sitewide = false;
		}
	}
} }
add_action( 'bp_activity_before_save', 'ucc_bp_activity_before_save', 10, 1 );

//	Of note: the following function seemed to work, but only satisfied the remove_action for new posts. There were also
//	issues with users updating "safe" posts to be in a category that was supposed to be excluded, making it a solution that
//	worked about half of the time, and thus, not a solution at all.
//
//	if ( ! function_exists( 'ucc_bp_blogs_record_post' ) ) {
//	function ucc_bp_blogs_record_post( $post_id, $post, $user_id = false ) {
//		// One or more categories specified by ID (integer), name or slug (string), or an array of these
//		$categories = 'exclude-me';
//	
//		if ( in_category( $categories, $post_id ) )
//			remove_action( 'save_post', 'bp_blogs_record_post' );
//	} }
//	add_action( 'save_post', 'ucc_bp_blogs_record_post', 9, 3 );

/*
	Copyright 2012 Jennifer M. Dodd (email: jmdodd@gmail.com)
	Released under the GPLv2 (or later).
*/

?>