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<title>[BuddyPress][13344] trunk/src: Improve the activity loop to be able to get items below a max.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="http://buddypress.trac.wordpress.org/changeset/13344">13344</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"http://buddypress.trac.wordpress.org/changeset/13344","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>imath</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2022-10-25 19:33:13 +0000 (Tue, 25 Oct 2022)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Improve the activity loop to be able to get items below a max. ID

The `$filter` parameter of this loop now includes a new `$offset_lower` 
argument  making it possible to only retrieve activities having an ID 
lower than this argument provided value.

We are using this filter to avoid a possible activity duplicate when 
clicking on the "Load More" link.

Closes https://github.com/buddypress/buddypress/pull/29
Fixes <a href="http://buddypress.trac.wordpress.org/ticket/4535">#4535</a></pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcbpactivitybpactivitytemplatephp">trunk/src/bp-activity/bp-activity-template.php</a></li>
<li><a href="#trunksrcbpactivityclassesclassbpactivityactivityphp">trunk/src/bp-activity/classes/class-bp-activity-activity.php</a></li>
<li><a href="#trunksrcbptemplatesbplegacybuddypressfunctionsphp">trunk/src/bp-templates/bp-legacy/buddypress-functions.php</a></li>
<li><a href="#trunksrcbptemplatesbplegacyjsbuddypressjs">trunk/src/bp-templates/bp-legacy/js/buddypress.js</a></li>
<li><a href="#trunksrcbptemplatesbpnouveauincludesfunctionsphp">trunk/src/bp-templates/bp-nouveau/includes/functions.php</a></li>
<li><a href="#trunksrcbptemplatesbpnouveaujsbuddypressactivityjs">trunk/src/bp-templates/bp-nouveau/js/buddypress-activity.js</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcbpactivitybpactivitytemplatephp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/bp-activity/bp-activity-template.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/bp-activity/bp-activity-template.php    2022-10-23 02:21:19 UTC (rev 13343)
+++ trunk/src/bp-activity/bp-activity-template.php      2022-10-25 19:33:13 UTC (rev 13344)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -272,6 +272,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        'primary_id'        => $primary_id,  // Object ID to filter on e.g. a group_id or blog_id etc.
</span><span class="cx" style="display: block; padding: 0 10px">                        'secondary_id'      => false,        // Secondary object ID to filter on e.g. a post_id.
</span><span class="cx" style="display: block; padding: 0 10px">                        'offset'            => false,        // Return only items >= this ID.
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        'offset_lower'      => false,        // Return only items < this ID.
</ins><span class="cx" style="display: block; padding: 0 10px">                         'since'             => false,        // Return only items recorded since this Y-m-d H:i:s date.
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                        'meta_query'        => false,        // Filter on activity meta. See WP_Meta_Query for format.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -326,7 +327,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $r['filter'] = array(
</span><span class="cx" style="display: block; padding: 0 10px">                        'object' => $_GET['afilter']
</span><span class="cx" style="display: block; padding: 0 10px">                );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-        } elseif ( ! empty( $r['user_id'] ) || ! empty( $r['object'] ) || ! empty( $r['action'] ) || ! empty( $r['primary_id'] ) || ! empty( $r['secondary_id'] ) || ! empty( $r['offset'] ) || ! empty( $r['since'] ) ) {
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ } elseif ( ! empty( $r['user_id'] ) || ! empty( $r['object'] ) || ! empty( $r['action'] ) || ! empty( $r['primary_id'] ) || ! empty( $r['secondary_id'] ) || ! empty( $r['offset'] ) || ! empty( $r['offset_lower'] ) || ! empty( $r['since'] ) ) {
</ins><span class="cx" style="display: block; padding: 0 10px">                 $r['filter'] = array(
</span><span class="cx" style="display: block; padding: 0 10px">                        'user_id'      => $r['user_id'],
</span><span class="cx" style="display: block; padding: 0 10px">                        'object'       => $r['object'],
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -334,6 +335,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        'primary_id'   => $r['primary_id'],
</span><span class="cx" style="display: block; padding: 0 10px">                        'secondary_id' => $r['secondary_id'],
</span><span class="cx" style="display: block; padding: 0 10px">                        'offset'       => $r['offset'],
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        'offset_lower' => $r['offset_lower'],
</ins><span class="cx" style="display: block; padding: 0 10px">                         'since'        => $r['since']
</span><span class="cx" style="display: block; padding: 0 10px">                );
</span><span class="cx" style="display: block; padding: 0 10px">        } else {
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -410,9 +412,19 @@
</span><span class="cx" style="display: block; padding: 0 10px">        function bp_get_activity_load_more_link() {
</span><span class="cx" style="display: block; padding: 0 10px">                global $activities_template;
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $url  = bp_get_requested_url();
-               $link = add_query_arg( $activities_template->pag_arg, $activities_template->pag_page + 1, $url );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $url            = bp_get_requested_url();
+               $load_more_args = array(
+                       $activities_template->pag_arg => $activities_template->pag_page + 1,
+               );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                // Try to include the offset arg.
+               $last_displayed_activity = reset( $activities_template->activities );
+               if ( isset( $last_displayed_activity->id ) && $last_displayed_activity->id ) {
+                       $load_more_args['offset_lower'] = (int) $last_displayed_activity->id;
+               }
+
+               $link = add_query_arg( $load_more_args, $url );
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 /**
</span><span class="cx" style="display: block; padding: 0 10px">                 * Filters the Load More link URL.
</span><span class="cx" style="display: block; padding: 0 10px">                 *
</span></span></pre></div>
<a id="trunksrcbpactivityclassesclassbpactivityactivityphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/bp-activity/classes/class-bp-activity-activity.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/bp-activity/classes/class-bp-activity-activity.php      2022-10-23 02:21:19 UTC (rev 13343)
+++ trunk/src/bp-activity/classes/class-bp-activity-activity.php        2022-10-25 19:33:13 UTC (rev 13344)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1922,6 +1922,8 @@
</span><span class="cx" style="display: block; padding: 0 10px">         *                                          'secondary_item_id' column in the database.
</span><span class="cx" style="display: block; padding: 0 10px">         *     @type int              $offset       Return only those items with an ID greater
</span><span class="cx" style="display: block; padding: 0 10px">         *                                          than the offset value.
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         *     @type int              $offset_lower Return only those items with an ID lower
+        *                                          than the offset value.
</ins><span class="cx" style="display: block; padding: 0 10px">          *     @type string           $since        Return only those items that have a
</span><span class="cx" style="display: block; padding: 0 10px">         *                                          date_recorded value greater than a
</span><span class="cx" style="display: block; padding: 0 10px">         *                                          given MySQL-formatted date.
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1967,6 +1969,11 @@
</span><span class="cx" style="display: block; padding: 0 10px">                        $filter_sql[] = "a.id >= {$sid_sql}";
</span><span class="cx" style="display: block; padding: 0 10px">                }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                if ( ! empty( $filter_array['offset_lower'] ) ) {
+                       $sid_sql = absint( $filter_array['offset_lower'] );
+                       $filter_sql[] = "a.id < {$sid_sql}";
+               }
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 if ( ! empty( $filter_array['since'] ) ) {
</span><span class="cx" style="display: block; padding: 0 10px">                        // Validate that this is a proper Y-m-d H:i:s date.
</span><span class="cx" style="display: block; padding: 0 10px">                        // Trick: parse to UNIX date then translate back.
</span></span></pre></div>
<a id="trunksrcbptemplatesbplegacybuddypressfunctionsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/bp-templates/bp-legacy/buddypress-functions.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/bp-templates/bp-legacy/buddypress-functions.php 2022-10-23 02:21:19 UTC (rev 13343)
+++ trunk/src/bp-templates/bp-legacy/buddypress-functions.php   2022-10-25 19:33:13 UTC (rev 13344)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -765,6 +765,10 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $qs[] = 'offset=' . intval( $_POST['offset'] );
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        if ( ! empty( $_POST['offset_lower'] ) ) {
+               $qs[] = 'offset_lower=' . intval( $_POST['offset_lower'] );
+       }
+
</ins><span class="cx" style="display: block; padding: 0 10px">         $object_search_text = bp_get_search_default_text( $object );
</span><span class="cx" style="display: block; padding: 0 10px">        if ( ! empty( $_POST['search_terms'] ) && is_string( $_POST['search_terms'] ) && $object_search_text != $_POST['search_terms'] && 'false' != $_POST['search_terms'] && 'undefined' != $_POST['search_terms'] )
</span><span class="cx" style="display: block; padding: 0 10px">                $qs[] = 'search_terms=' . urlencode( $_POST['search_terms'] );
</span></span></pre></div>
<a id="trunksrcbptemplatesbplegacyjsbuddypressjs"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/bp-templates/bp-legacy/js/buddypress.js</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/bp-templates/bp-legacy/js/buddypress.js 2022-10-23 02:21:19 UTC (rev 13343)
+++ trunk/src/bp-templates/bp-legacy/js/buddypress.js   2022-10-25 19:33:13 UTC (rev 13344)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -431,6 +431,9 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                /* Load more updates at the end of the page */
</span><span class="cx" style="display: block; padding: 0 10px">                if ( target.parent().hasClass('load-more') ) {
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        var loadMoreLink = new URL( jq( target ).prop( 'href' ) ),
+                           offsetLower = parseInt( loadMoreLink.searchParams.get( 'offset_lower' ), 10 ) || 0;
+
</ins><span class="cx" style="display: block; padding: 0 10px">                         if ( bp_ajax_request ) {
</span><span class="cx" style="display: block; padding: 0 10px">                                bp_ajax_request.abort();
</span><span class="cx" style="display: block; padding: 0 10px">                        }
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -448,6 +451,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                action: 'activity_get_older_updates',
</span><span class="cx" style="display: block; padding: 0 10px">                                'cookie': bp_get_cookies(),
</span><span class="cx" style="display: block; padding: 0 10px">                                'page': oldest_page,
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                'offset_lower': offsetLower,
</ins><span class="cx" style="display: block; padding: 0 10px">                                 'exclude_just_posted': just_posted.join(',')
</span><span class="cx" style="display: block; padding: 0 10px">                        };
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span></span></pre></div>
<a id="trunksrcbptemplatesbpnouveauincludesfunctionsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/bp-templates/bp-nouveau/includes/functions.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/bp-templates/bp-nouveau/includes/functions.php  2022-10-23 02:21:19 UTC (rev 13343)
+++ trunk/src/bp-templates/bp-nouveau/includes/functions.php    2022-10-25 19:33:13 UTC (rev 13344)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -117,6 +117,10 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $qs[] = 'offset=' . intval( $post_query['offset'] );
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+        if ( ! empty( $post_query['offset_lower'] ) ) {
+               $qs[] = 'offset_lower=' . intval( $post_query['offset_lower'] );
+       }
+
</ins><span class="cx" style="display: block; padding: 0 10px">         $object_search_text = bp_get_search_default_text( $object );
</span><span class="cx" style="display: block; padding: 0 10px">        if ( ! empty( $post_query['search_terms'] ) && $object_search_text != $post_query['search_terms'] && 'false' != $post_query['search_terms'] && 'undefined' != $post_query['search_terms'] ) {
</span><span class="cx" style="display: block; padding: 0 10px">                $qs[] = 'search_terms=' . urlencode( $_POST['search_terms'] );
</span></span></pre></div>
<a id="trunksrcbptemplatesbpnouveaujsbuddypressactivityjs"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/bp-templates/bp-nouveau/js/buddypress-activity.js</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/bp-templates/bp-nouveau/js/buddypress-activity.js       2022-10-23 02:21:19 UTC (rev 13343)
+++ trunk/src/bp-templates/bp-nouveau/js/buddypress-activity.js 2022-10-25 19:33:13 UTC (rev 13344)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -273,12 +273,14 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                        // Load more activities
</span><span class="cx" style="display: block; padding: 0 10px">                        } else if ( $( event.currentTarget ).hasClass( 'load-more' ) ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                var next_page = ( Number( this.current_page ) * 1 ) + 1, self = this, search_terms = '';
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         var next_page = ( Number( this.current_page ) * 1 ) + 1, self = this, search_terms = '',
+                                   loadMoreLink = $( event.currentTarget ).children().first(),
+                                   offsetLower  = loadMoreLink ? bp.Nouveau.getLinkParams( loadMoreLink.prop( 'href' ), 'offset_lower' ) : 0;
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                                // Stop event propagation
</span><span class="cx" style="display: block; padding: 0 10px">                                event.preventDefault();
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                                $( event.currentTarget ).find( 'a' ).first().addClass( 'loading' );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                         loadMoreLink.addClass( 'loading' );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                                // reset the just posted
</span><span class="cx" style="display: block; padding: 0 10px">                                this.just_posted = [];
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -300,6 +302,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                        page                : next_page,
</span><span class="cx" style="display: block; padding: 0 10px">                                        method              : 'append',
</span><span class="cx" style="display: block; padding: 0 10px">                                        exclude_just_posted : this.just_posted.join( ',' ),
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                                        offset_lower        : offsetLower,
</ins><span class="cx" style="display: block; padding: 0 10px">                                         target              : '#buddypress [data-bp-list] ul.bp-list'
</span><span class="cx" style="display: block; padding: 0 10px">                                } ).done( function( response ) {
</span><span class="cx" style="display: block; padding: 0 10px">                                        if ( true === response.success ) {
</span></span></pre>
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