Stomping WP_Query in author archive to facilitate pagination with custom queries

t31os says: [See edit history for previous code and comments]

Using Ajax to paginate your queries

I’ve put together some code that will fetch your posts and comments via ajax using simple prev/next navigation via ajax.

1) Replace all the code you posted in your author.php with the following..

<?php $cat_settings = array( 'Articles' => 7, 'Journals' => 6, 'Questions' => 3 ); ?>
<?php do_action( 'author_ajax_catposts', $cat_settings ); ?>

2) Create a Javascript file in your theme’s directory called authorposts.js and place the following code into that file.

jQuery(document).ready( function($) {
    
    if( 'undefined' == typeof( aacVars ) )
        return;
    
    $('.aacnav').click(function() {
        
        var r = $( $(this).attr('href') );
        var a = $( $(this).attr('href') + '-ap' );
        var c = this.className.split(' ');
        
        if( 
            'undefined' == typeof( c ) || 
            'undefined' == typeof( r ) || 
            'undefined' == typeof( a ) 
        )
            return false;
        
        var d = { 
            action:      aacVars.posts_action, 
            _ajax_nonce: aacVars.nonce,
            author:      aacVars.author,
            category:    $(this).attr('href')
        };
        
        p = parseInt( a.text() );
        c = c.pop();
        
        switch( c ) {
            case 'aacnext':
                if( r.children('p.nomore').length )
                    return false;
                d.page = p + 1;
            break;
            case 'aacprev':
                if( p < 2 )
                    return false;
                d.page = p - 1;
            break;
            default:
                return false;
        }
        
        $.post( aacVars.ajaxpth, d, function( res ) {
            if( '-1' == res ) {
                alert( 'auth failed' );
                return false;
            }
            $( r ).html( res );
            $( a ).text( d.page );
        });
        
        return false;
    });
    
    $('.aacnavc').click(function() {
        
        var r = $( '#aac-comments' );
        var n = $( '#aac-comments-ap' );
        var l = $(this).attr('href');
        
        if( 
            'undefined' == typeof( n ) || 
            'undefined' == typeof( r ) 
        )
            return false;
        
        var d = { 
            action:      aacVars.comments_action, 
            _ajax_nonce: aacVars.nonce,
            author:      aacVars.author
        };
        
        p = parseInt( n.text() );
        
        switch( l ) {
            case '#next':
                if( r.children('p.nomore').length )
                    return false;
                d.page = p + 1;
            break;
            case '#prev':
                if( p < 2 )
                    return false;
                d.page = p - 1;
            break;
            default:
                return false;
        }
        
        $.post( aacVars.ajaxpth, d, function( res ) {
            if( '-1' == res ) {
                alert( 'auth failed' );
                return false;
            }
            r.html( res );
            $( n ).text( d.page );
        });
        
    });
    
});

3) Copy the following code into your theme’s functions.php file.

class Author_Ajax_Cats {
    
    private $posts_per_page    = 3;
    private $comments_per_page = 1;
    private $posts_action      = 'aac-posts';
    private $comments_action   = 'aac-comments';
    private $js                = array();
    
    public function __construct() {
        
        add_action( 'parse_request',                            array( $this, 'aac_parse_request' ) );
        add_action( 'wp_ajax_nopriv_' . $this->posts_action,    array( $this, 'aac_ajax_posts' ) );
        add_action( 'wp_ajax_' .        $this->posts_action,    array( $this, 'aac_ajax_posts' ) );
        add_action( 'wp_ajax_nopriv_' . $this->comments_action, array( $this, 'aac_ajax_comments' ) );
        add_action( 'wp_ajax_' .        $this->comments_action, array( $this, 'aac_ajax_comments' ) );
        add_action( 'wp_enqueue_scripts',                       array( $this, 'aac_enqueue_scripts' ) );
        add_action( 'author_ajax_catposts',                     array( $this, 'aac_print_posts' ) );
    }
    public function aac_parse_request( $wp ) {
        
        if( !isset( $wp->query_vars['author_name'] ) || is_admin() )
            return;
        
        $wp->query_vars['paged'] = 1;
        
    }
    private function setup_js_vars() {
        
        global $wp_query;
        
        $this->js['author']          = $wp_query->get_queried_object_id();
        $this->js['posts_action']    = $this->posts_action;
        $this->js['comments_action'] = $this->comments_action;
        $this->js['nonce']           = wp_create_nonce( 'noncekey' );
        $this->js['ajaxpth']         = admin_url( 'admin-ajax.php' );
    }
    public function aac_enqueue_scripts() {
        
        if( !is_author() )
            return;
        
        $this->setup_js_vars();
        
        wp_register_script( 'author-ajax', get_bloginfo('stylesheet_directory') . '/authorposts.js', array( 'jquery' ), time(), true );
        wp_localize_script( 'author-ajax', 'aacVars', $this->js );
        wp_enqueue_script( 'author-ajax' );
    }
    public function aac_ajax_comments() {
        
        if( !isset( $_POST['page'] ) || !isset( $_POST['author'] ) )
            die;
        
        check_ajax_referer( 'noncekey' );
        
        $authID = absint( $_POST['author'] );
        $paged  = absint( $_POST['page'] );
        
        $args = array(
            'user_id' => $authID,
            'number'  => $this->comments_per_page,
            'offset'  => ( ( $paged - 1 ) * $this->comments_per_page ),
            'status'  => 'approve',
            'type'    => 'comment'
        );

        $answers_list = get_comments( $args );
        if( empty( $answers_list ) ) {
            printf( '<p class="nomore">%s</p>', __( 'No more answers by this user.' ) );
            die;
        }
        $_comment_walk = new Walker_Comment;
        
        echo '<ul>';
        $_comment_walk->paged_walk( $answers_list, 0, 1, $this->comments_per_page, array( 
            'style' => 'ul', 
            'avatar_size' => 15, 
            'max_depth' => 1, 
            'callback' => array( $this, 'author_comment_walker' ) 
        ) );
        echo '</ul>';
        
        die;
    }
    public function aac_ajax_posts() {
        
        if( !isset( $_POST['page'] ) || !isset( $_POST['category'] ) || !isset( $_POST['author'] ) )
            die;
        
        check_ajax_referer( 'noncekey' );
        
        $catID  = absint( str_replace( '#aac-', '', $_POST['category'] ) );
        $authID = absint( $_POST['author'] );
        $paged  = absint( $_POST['page'] );
        
        $args = array(
            'paged'       => $paged,
            'numberposts' => $this->posts_per_page,
            'author'      => $authID,
            'cat'         => $catID
        );
        $posts = get_posts( $args );

        if( empty( $posts ) )
            die( sprintf( '<p class="nomore">%s</p>', __( 'No more posts.' ) ) );
        
        $this->do_posts( $posts );
        
        die;
    }
    public function aac_print_posts( $cats = array() ) {
        
        //get_the_term_list( $post->ID, 'category', '<ul><li>', '</li><li>', '</li></ul>' )
        
        foreach( $cats as $heading => $id ) {
            $args = array( 
                'cat'         => $id,
                'paged'       => 1, // Always the first page on load
                'numberposts' => $this->posts_per_page, 
                'author'      => $this->js['author']
            );
            $posts = get_posts( $args );
            
            printf( '<h2>%s</h2>', $heading );
            
            if( empty( $posts ) ) {
                printf( '<div><p class="nomore">%s</p></div>', __( 'No posts.' ) );
                continue;
            }
            
            printf( '<div id="aac-%d" class="aac-result">', $id );
            
            $this->do_posts( $posts );
            
            printf( '</div><div>' );
            printf( '<p class="alignright">Page: <span id="aac-%1$d-ap">1</span></p><p class="alignleft"><a class="aacnav aacprev" href="#aac-%1$d">%2$s</a> <a class="aacnav aacnext" href="#aac-%1$d">%3$s</a></p>', $id, __('Previous'), __('Next') );
            printf( '<br class="clear" /></div>' );
        }
        ?>

        <h2>Answers</h2>

        <?php
        $args = array(
            'user_id' => $this->js['author'],
            'number'  => $this->comments_per_page,
            'status'  => 'approve',
            'type'    => 'comment'
        );
        $answers_list = get_comments( $args );
        if( empty( $answers_list ) ){
            printf( '<p>%s</p>', __( 'No answers by this user' ) );
            return;
        }
        $_comment_walk = new Walker_Comment;
        
        printf( '<div id="aac-comments"><ul>' );

        $_comment_walk->paged_walk( $answers_list, 0, 1, $this->comments_per_page, array( 
            'style' => 'ul', 
            'avatar_size' => 15, 
            'max_depth' => 1, 
            'callback' => array( $this, 'author_comment_walker' ) 
        ) );
            
        printf( '</ul></div><div><p class="alignright">Page: <span id="aac-comments-ap">1</span></p><p class="alignleft"><a class="aacnavc" href="#prev">%s</a> <a class="aacnavc" href="#next">%s</a></p><br class="clear" /></div>', __('Prev'), __('Next') );
    }
    private function do_posts( $posts, $term_id = 0 ) {
    
        echo '<ul>';
        foreach( $posts as $post )
            printf( '<li><a href="%s">%s</a></li>', get_permalink( $post->ID ), get_the_title( $post->ID ) );
        echo '</ul>';
        
    }
    public function author_comment_walker( $comment, $args, $depth ) {
        
        $GLOBALS['comment'] = $comment; 
        ?>
        
        <li>
            <div id="comment-<?php comment_ID(); ?>">
                <div>
                    <?php echo get_avatar( $comment, $args['avatar_size'], $default="<path_to_url>" ); ?> <?php echo get_comment_author_link(); ?> answered 
                    <a href="<?php echo get_permalink( $comment->comment_post_ID ); ?>"><?php echo get_the_title( $comment->comment_post_ID ); ?></a> on <a href="<?php echo htmlspecialchars( get_comment_link( $comment->comment_ID ) ) ?>"><?php printf( __( '%1$s at %2$s' ), get_comment_date(),  get_comment_time() ); ?></a>
                    <?php //edit_comment_link( __( '(Edit)' ),'  ','' ); ?>
                </div>
                <?php // comment_text() ?>
                <p><?php comment_excerpt(); ?></p>
            </div>
        <?php
    }
}
$aac = new Author_Ajax_Cats;

4) Fire up an author page and see how the results look and to check my code works for you.

How it looks locally with test data.

Click to view larger version, scaled down for the answer

Live demo of the code in action:** (test site)

http://t31os.onatha.com/author/t31os/

5) Provide some feedback.. 🙂

I hope that helps…

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