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<?php |
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/* |
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* Widget to display blog authors with avatars and recent posts. |
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* |
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* Configurable parameters include: |
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* 1. Whether to display authors who haven't written any posts |
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* 2. The number of posts to be displayed per author (defaults to 0) |
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* 3. Avatar size |
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*/ |
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class Widget_Authors extends WP_Widget { |
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public function __construct() { |
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parent::__construct( |
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'authors', |
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/** This filter is documented in modules/widgets/facebook-likebox.php */ |
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apply_filters( 'jetpack_widget_name', __( 'Authors', 'jetpack' ) ), |
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array( 'classname' => 'widget_authors', 'description' => __( 'Display blogs authors with avatars and recent posts.' ) ), |
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array( 'width' => 300 ) |
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); |
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add_action( 'publish_post', array( __CLASS__, 'flush_cache' ) ); |
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add_action( 'deleted_post', array( __CLASS__, 'flush_cache' ) ); |
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add_action( 'switch_theme', array( __CLASS__, 'flush_cache' ) ); |
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} |
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public static function flush_cache() { |
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wp_cache_delete( 'widget_authors', 'widget' ); |
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wp_cache_delete( 'widget_authors_ssl', 'widget' ); |
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} |
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public function widget( $args, $instance ) { |
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global $wpdb; |
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$cache_bucket = is_ssl() ? 'widget_authors_ssl' : 'widget_authors'; |
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if ( '%BEG_OF_TITLE%' != $args['before_title'] ) { |
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if ( $output = wp_cache_get( $cache_bucket, 'widget') ) { |
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echo $output; |
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return; |
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} |
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ob_start(); |
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} |
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$instance = wp_parse_args( $instance, array( 'title' => __( 'Authors' ), 'all' => false, 'number' => 5, 'avatar_size' => 48 ) ); |
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$instance['number'] = min( 10, max( 0, (int) $instance['number'] ) ); |
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// We need to query at least one post to determine whether an author has written any posts or not |
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$query_number = max( $instance['number'], 1 ); |
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$authors = get_users( array( |
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'fields' => 'all', |
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'who' => 'authors' |
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) ); |
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echo $args['before_widget']; |
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echo $args['before_title'] . esc_html( $instance['title'] ) . $args['after_title']; |
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echo '<ul>'; |
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foreach ( $authors as $author ) { |
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$r = new WP_Query( array( |
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'author' => $author->ID, |
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'posts_per_page' => $query_number, |
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'post_type' => 'post', |
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'post_status' => 'publish', |
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'no_found_rows' => true, |
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) ); |
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if ( ! $r->have_posts() && ! $instance['all'] ) |
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continue; |
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echo '<li>'; |
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// Display avatar and author name |
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if ( $r->have_posts() ) { |
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echo '<a href="' . get_author_posts_url( $author->ID ) . '">'; |
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View Code Duplication |
if ( $instance['avatar_size'] > 1 ) |
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echo ' ' . get_avatar( $author->ID, $instance['avatar_size'], '', true ) . ' '; |
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echo '<strong>' . esc_html( $author->display_name ) . '</strong>'; |
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echo '</a>'; |
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} |
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else if ( $instance['all'] ) { |
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View Code Duplication |
if ( $instance['avatar_size'] > 1 ) |
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echo get_avatar( $author->ID, $instance['avatar_size'], '', true ) . ' '; |
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echo '<strong>' . esc_html( $author->display_name ) . '</strong>'; |
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} |
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if ( 0 == $instance['number'] ) { |
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echo '</li>'; |
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continue; |
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} |
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// Display a short list of recent posts for this author |
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if ( $r->have_posts() ){ |
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echo '<ul>'; |
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while ( $r->have_posts() ) { |
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$r->the_post(); |
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echo '<li><a href="' . get_permalink() . '">'; |
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if ( get_the_title() ) |
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echo get_the_title(); |
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else |
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echo get_the_ID(); |
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echo '</a></li>'; |
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} |
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echo '</ul>'; |
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} |
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echo '</li>'; |
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} |
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echo '</ul>'; |
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echo $args['after_widget']; |
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wp_reset_postdata(); |
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if ( '%BEG_OF_TITLE%' != $args['before_title'] ) |
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wp_cache_add( $cache_bucket, ob_get_flush(), 'widget'); |
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/** This action is documented in modules/widgets/gravatar-profile.php */ |
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do_action( 'jetpack_stats_extra', 'widget_view', 'authors' ); |
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} |
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public function form( $instance ) { |
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$instance = wp_parse_args( $instance, array( 'title' => '', 'all' => false, 'avatar_size' => 48, 'number' => 0 ) ); |
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?> |
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<p> |
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<label> |
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<?php _e( 'Title:' ); ?> |
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<input class="widefat" name="<?php echo $this->get_field_name( 'title' ); ?>" type="text" value="<?php echo esc_attr( $instance['title'] ); ?>" /> |
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</label> |
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</p> |
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<p> |
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<label> |
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<input class="checkbox" type="checkbox" <?php checked( $instance['all'] ); ?> name="<?php echo $this->get_field_name( 'all' ); ?>" /> |
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<?php _e( 'Display all authors (including those who have not written any posts)' ); ?> |
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</label> |
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</p> |
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<p> |
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<label> |
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<?php _e( 'Number of posts to show for each author:' ); ?> |
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<input style="width: 50px; text-align: center;" name="<?php echo $this->get_field_name( 'number' ); ?>" type="text" value="<?php echo esc_attr( $instance['number'] ); ?>" /> |
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<?php _e( '(at most 10)' ); ?> |
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</label> |
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</p> |
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<p> |
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<label> |
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<?php _e( 'Avatar Size (px):' ); ?> |
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<select name="<?php echo $this->get_field_name( 'avatar_size' ); ?>"> |
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<?php foreach( array( '1' => __( 'No Avatars' ), '16' => '16x16', '32' => '32x32', '48' => '48x48', '96' => '96x96', '128' => '128x128' ) as $value => $label ) { ?> |
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<option value="<?php echo esc_attr( $value ); ?>" <?php selected( $value, $instance['avatar_size'] ); ?>><?php echo esc_html( $label ); ?></option> |
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<?php } ?> |
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</select> |
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</label> |
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</p> |
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<?php |
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} |
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public function update( $new_instance, $old_instance ) { |
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$new_instance['title'] = strip_tags( $new_instance['title'] ); |
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$new_instance['all'] = isset( $new_instance['all'] ); |
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$new_instance['number'] = (int) $new_instance['number']; |
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$new_instance['avatar_size'] = (int) $new_instance['avatar_size']; |
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Widget_Authors::flush_cache(); |
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return $new_instance; |
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} |
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} |
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add_action( 'widgets_init', function () { |
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register_widget( 'Widget_Authors' ); |
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} ); |
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Automattic /
jetpack
