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<title>[BuddyPress][6501] trunk/bp-activity/bp-activity-template.php: Add template functions to get an activity item's comments' author IDs</title>
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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://buddypress.trac.wordpress.org/changeset/6501">6501</a></dd>
<dt>Author</dt> <dd>djpaul</dd>
<dt>Date</dt> <dd>2012-11-09 15:19:23 +0000 (Fri, 09 Nov 2012)</dd>
</dl>
<h3>Log Message</h3>
<pre>Add template functions to get an activity item's comments' author IDs
* bp_activity_get_comments_user_ids() returns the user IDs of everyone who's written an activity comment on the current activity item.
* bp_activity_comments_user_avatars() uses the above to output the users' avatars, linked to their profile page, into <LI> tags.
* Fixes <a href="http://buddypress.trac.wordpress.org/ticket/4655">#4655</a>
An example use case is where you want to show a list of all users participating in a discussion on a particular activity, above or before the activity comments themselves.</pre>
<h3>Modified Paths</h3>
<ul>
<li><a href="#trunkbpactivitybpactivitytemplatephp">trunk/bp-activity/bp-activity-template.php</a></li>
</ul>
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<div id="patch">
<h3>Diff</h3>
<a id="trunkbpactivitybpactivitytemplatephp"></a>
<div class="modfile"><h4>Modified: trunk/bp-activity/bp-activity-template.php (6500 => 6501)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/bp-activity/bp-activity-template.php 2012-11-09 14:14:18 UTC (rev 6500)
+++ trunk/bp-activity/bp-activity-template.php 2012-11-09 15:19:23 UTC (rev 6501)
</span><span class="lines">@@ -2479,6 +2479,79 @@
</span><span class="cx"> return apply_filters( 'bp_get_activity_post_form_action', home_url( bp_get_activity_root_slug() . '/post/' ) );
</span><span class="cx"> }
</span><span class="cx">
</span><ins>+/**
+ * Looks at all the activity comments on the current activity item, and prints the comments' authors's avatar wrapped in <LI> tags.
+ *
+ * Use this function to easily output activity comment authors' avatars.
+ *
+ * @param array $args See {@link bp_core_fetch_avatar} for accepted values
+ * @since BuddyPress (1.7)
+ */
+function bp_activity_comments_user_avatars( $args = array() ) {
+ $defaults = array(
+ 'height' => false,
+ 'html' => true,
+ 'type' => 'thumb',
+ 'width' => false,
+ );
+
+ $args = wp_parse_args( $args, $defaults );
+ extract( $args, EXTR_SKIP );
+
+ // Get the user IDs of everyone who has left a comment to the current activity item
+ $user_ids = bp_activity_get_comments_user_ids();
+
+ $output = array();
+ foreach ( (array) $user_ids as $user_id ) {
+ $profile_link = bp_core_get_user_domain( $user_id );
+ $image_html = bp_core_fetch_avatar( array( 'item_id' => $user_id, 'height' => $height, 'html' => $html, 'type' => $type, 'width' => $width, ) );
+
+ $output[] = sprintf( '<a href="%1$s">%2$s</a>', esc_url( $profile_link ), $image_html );
+ }
+
+ echo apply_filters( 'bp_activity_comments_user_avatars', '<li>' . implode( '</li><li>', $output ) . '</li>', $args, $output );
+}
+
+/**
+ * Returns the user IDs of everyone who's written an activity comment on the current activity item.
+ *
+ * @return bool|array Returns false if there is no current activity items
+ * @since BuddyPress (1.7)
+ */
+function bp_activity_get_comments_user_ids() {
+ if ( empty( $GLOBALS['activities_template']->activity ) || empty( $GLOBALS['activities_template']->activity->children ) )
+ return false;
+
+ $user_ids = (array) bp_activity_recurse_comments_user_ids( $GLOBALS['activities_template']->activity->children );
+ return apply_filters( 'bp_activity_get_comments_user_ids', array_unique( $user_ids ) );
+}
+
+ /**
+ * Recurse through all activity comments and collect the IDs of the users who wrote them.
+ *
+ * @param array $comments Array of {@link BP_Activity_Activity} items
+ * @return array Array of user IDs
+ * @since BuddyPress (1.7)
+ */
+ function bp_activity_recurse_comments_user_ids( array $comments ) {
+ $user_ids = array();
+
+ foreach ( $comments as $comment ) {
+ // If a user is a spammer, their activity items will have been automatically marked as spam. Skip these.
+ if ( $comment->is_spam )
+ continue;
+
+ $user_ids[] = $comment->user_id;
+
+ // Check for commentception
+ if ( ! empty( $comment->children ) )
+ $user_ids = array_merge( $user_ids, bp_activity_recurse_comments_user_ids( $comment->children ) );
+ }
+
+ return $user_ids;
+ }
+
+
</ins><span class="cx"> /* RSS Feed Template Tags ****************************************************/
</span><span class="cx">
</span><span class="cx"> /**
</span></span></pre>
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