drop down list for authors

  • I would like to list all post authors in a drop down list to save space.

    I have used a script to show tags in a drop down list. I was wondering if someone created a similar script for an authors drop down list that can be placed in a sidebar.

    here is the tags script:

    <?php
function dropdown_tag_cloud( $args = '' ) {
	$defaults = array(
		'smallest' => 8, 'largest' => 22, 'unit' => 'pt', 'number' => 45,
		'format' => 'flat', 'orderby' => 'name', 'order' => 'ASC',
		'exclude' => '', 'include' => ''
	);
	$args = wp_parse_args( $args, $defaults );

	$tags = get_tags( array_merge($args, array('orderby' => 'count', 'order' => 'DESC')) ); // Always query top tags

	if ( empty($tags) )
		return;

	$return = dropdown_generate_tag_cloud( $tags, $args ); // Here's where those top tags get sorted according to $args
	if ( is_wp_error( $return ) )
		return false;
	else
		echo apply_filters( 'dropdown_tag_cloud', $return, $args );
}

function dropdown_generate_tag_cloud( $tags, $args = '' ) {
	global $wp_rewrite;
	$defaults = array(
		'smallest' => 8, 'largest' => 22, 'unit' => 'pt', 'number' => 45,
		'format' => 'flat', 'orderby' => 'name', 'order' => 'ASC'
	);
	$args = wp_parse_args( $args, $defaults );
	extract($args);

	if ( !$tags )
		return;
	$counts = $tag_links = array();
	foreach ( (array) $tags as $tag ) {
		$counts[$tag->name] = $tag->count;
		$tag_links[$tag->name] = get_tag_link( $tag->term_id );
		if ( is_wp_error( $tag_links[$tag->name] ) )
			return $tag_links[$tag->name];
		$tag_ids[$tag->name] = $tag->term_id;
	}

	$min_count = min($counts);
	$spread = max($counts) - $min_count;
	if ( $spread <= 0 )
		$spread = 1;
	$font_spread = $largest - $smallest;
	if ( $font_spread <= 0 )
		$font_spread = 1;
	$font_step = $font_spread / $spread;

	// SQL cannot save you; this is a second (potentially different) sort on a subset of data.
	if ( 'name' == $orderby )
		uksort($counts, 'strnatcasecmp');
	else
		asort($counts);

	if ( 'DESC' == $order )
		$counts = array_reverse( $counts, true );

	$a = array();

	$rel = ( is_object($wp_rewrite) &amp;&amp; $wp_rewrite->using_permalinks() ) ? ' rel="tag"' : '';

	foreach ( $counts as $tag => $count ) {
		$tag_id = $tag_ids[$tag];
		$tag_link = clean_url($tag_links[$tag]);
		$tag = str_replace(' ', '&nbsp;', wp_specialchars( $tag ));
		$a[] = "\t<option value='$tag_link'>$tag ($count)</option>";
	}

	switch ( $format ) :
	case 'array' :
		$return =&amp; $a;
		break;
	case 'list' :
		$return = "<ul class='wp-tag-cloud'>\n\t<li>";
		$return .= join("</li>\n\t<li>", $a);
		$return .= "</li>\n</ul>\n";
		break;
	default :
		$return = join("\n", $a);
		break;
	endswitch;

	return apply_filters( 'dropdown_generate_tag_cloud', $return, $tags, $args );
}
?>

    to call this script you can insert the following into the sidebar:

    <select name="tag-dropdown" onchange="document.location.href=this.options[this.selectedIndex].value;">
	<option value="#">Liste d'auteurs</option>
	<?php dropdown_tag_cloud('number=0&amp;order=asc'); ?>
</select>
Viewing 5 replies - 1 through 5 (of 5 total)
  • Thread Starter sailpilot

    (@sailpilot)

    anyone have any suggestions for this drop down?

    I haven’t found any other code for drop-down lists like yours!

    Although I don’t have any suggestions, I do have a question… Does anyone know how to do a drop-down list for the authors of the posts (not for tags)? As in wp_list_authors() function, but inside a dropdown menu.

    Thanks!

    Hello. I’ve made a very ruff hack for this one: modified the author-template.php in wordpress 2.8 (lines 290 to 329). This is it:

    <?php
/**
 * Author Template functions for use in themes.
 *
 * These functions must be used within the WordPress Loop.
 *
 * @link https://codex.www.ads-software.com/Author_Templates
 *
 * @package WordPress
 * @subpackage Template
 */

/**
 * Retrieve the author of the current post.
 *
 * @since 1.5
 * @uses $authordata The current author's DB object.
 * @uses apply_filters() Calls 'the_author' hook on the author display name.
 *
 * @param string $deprecated Deprecated.
 * @return string The author's display name.
 */
function get_the_author($deprecated = '') {
	global $authordata;
	return apply_filters('the_author', $authordata->display_name);
}

/**
 * Display the name of the author of the current post.
 *
 * The behavior of this function is based off of old functionality predating
 * get_the_author(). This function is not deprecated, but is designed to echo
 * the value from get_the_author() and as an result of any old theme that might
 * still use the old behavior will also pass the value from get_the_author().
 *
 * The normal, expected behavior of this function is to echo the author and not
 * return it. However, backwards compatiability has to be maintained.
 *
 * @since 0.71
 * @see get_the_author()
 * @link https://codex.www.ads-software.com/Template_Tags/the_author
 *
 * @param string $deprecated Deprecated.
 * @param string $deprecated_echo Echo the string or return it.
 * @return string The author's display name, from get_the_author().
 */
function the_author($deprecated = '', $deprecated_echo = true) {
	if ( $deprecated_echo )
		echo get_the_author();
	return get_the_author();
}

/**
 * Retrieve the author who last edited the current post.
 *
 * @since 2.8
 * @uses $post The current post's DB object.
 * @uses get_post_meta() Retrieves the ID of the author who last edited the current post.
 * @uses get_userdata() Retrieves the author's DB object.
 * @uses apply_filters() Calls 'the_modified_author' hook on the author display name.
 * @return string The author's display name.
 */
function get_the_modified_author() {
	global $post;
	if ( $last_id = get_post_meta($post->ID, '_edit_last', true) ) {
		$last_user = get_userdata($last_id);
		return apply_filters('the_modified_author', $last_user->display_name);
	}
}

/**
 * Display the name of the author who last edited the current post.
 *
 * @since 2.8
 * @see get_the_author()
 * @return string The author's display name, from get_the_modified_author().
 */
function the_modified_author() {
	echo get_the_modified_author();
}

/**
 * Retrieve the requested data of the author of the current post.
 * @link https://codex.www.ads-software.com/Template_Tags/the_author_meta
 * @since 2.8.0
 * @uses $authordata The current author's DB object (if $user_id not specified).
 * @param string $field selects the field of the users record.
 * @param int $user_id Optional. User ID.
 * @return string The author's field from the current author's DB object.
 */
function get_the_author_meta($field = '', $user_id = false) {
	if ( ! $user_id )
		global $authordata;
	else
		$authordata = get_userdata( $user_id );

	$field = strtolower($field);
	$user_field = "user_$field";

	if ( 'id' == $field )
		$value = isset($authordata->ID) ? (int)$authordata->ID : 0;
	elseif ( isset($authordata->$user_field) )
		$value = $authordata->$user_field;
	else
		$value = isset($authordata->$field) ? $authordata->$field : '';

	return apply_filters('get_the_author_' . $field, $value);
}

/**
 * Retrieve the requested data of the author of the current post.
 * @link https://codex.www.ads-software.com/Template_Tags/the_author_meta
 * @since 2.8.0
 * @param string $field selects the field of the users record.
 * @param int $user_id Optional. User ID.
 * @echo string The author's field from the current author's DB object.
 */
function the_author_meta($field = '', $user_id = false) {
	echo apply_filters('the_author_' . $field, get_the_author_meta($field, $user_id));
}

/**
 * Display either author's link or author's name.
 *
 * If the author has a home page set, echo an HTML link, otherwise just echo the
 * author's name.
 *
 * @link https://codex.www.ads-software.com/Template_Tags/the_author_link
 * @since 2.1
 * @uses get_the_author_meta()
 * @uses the_author()
 */
function the_author_link() {
	if ( get_the_author_meta('url') ) {
		echo '<a href="' . get_the_author_meta('url') . '" title="' . sprintf(__("Visit %s’s website"), get_the_author()) . '" rel="external">' . get_the_author() . '</a>';
	} else {
		the_author();
	}
}

/**
 * Retrieve the number of posts by the author of the current post.
 *
 * @since 1.5
 * @uses $post The current post in the Loop's DB object.
 * @uses get_usernumposts()
 * @return int The number of posts by the author.
 */
function get_the_author_posts() {
	global $post;
	return get_usernumposts($post->post_author);
}

/**
 * Display the number of posts by the author of the current post.
 *
 * @link https://codex.www.ads-software.com/Template_Tags/the_author_posts
 * @since 0.71
 * @uses get_the_author_posts() Echos returned value from function.
 */
function the_author_posts() {
	echo get_the_author_posts();
}

/**
 * Display an HTML link to the author page of the author of the current post.
 *
 * Does just echo get_author_posts_url() function, like the others do. The
 * reason for this, is that another function is used to help in printing the
 * link to the author's posts.
 *
 * @link https://codex.www.ads-software.com/Template_Tags/the_author_posts_link
 * @since 1.2.0
 * @uses $authordata The current author's DB object.
 * @uses get_author_posts_url()
 * @uses get_the_author()
 * @param string $deprecated Deprecated.
 */
function the_author_posts_link($deprecated = '') {
	global $authordata;
	printf(
		'<a href="%1$s" title="%2$s">%3$s</a>',
		get_author_posts_url( $authordata->ID, $authordata->user_nicename ),
		sprintf( __( 'Posts by %s' ), esc_attr( get_the_author() ) ),
		get_the_author()
	);
}

/**
 * Retrieve the URL to the author page of the author of the current post.
 *
 * @since 2.1.0
 * @uses $wp_rewrite WP_Rewrite
 * @return string The URL to the author's page.
 */
function get_author_posts_url($author_id, $author_nicename = '') {
	global $wp_rewrite;
	$auth_ID = (int) $author_id;
	$link = $wp_rewrite->get_author_permastruct();

	if ( empty($link) ) {
		$file = get_option('home') . '/';
		$link = $file . '?author=' . $auth_ID;
	} else {
		if ( '' == $author_nicename ) {
			$user = get_userdata($author_id);
			if ( !empty($user->user_nicename) )
				$author_nicename = $user->user_nicename;
		}
		$link = str_replace('%author%', $author_nicename, $link);
		$link = get_option('home') . trailingslashit($link);
	}

	$link = apply_filters('author_link', $link, $author_id, $author_nicename);

	return $link;
}

/**
 * List all the authors of the blog, with several options available.
 *
 * <ul>
 * <li>optioncount (boolean) (false): Show the count in parenthesis next to the
 * author's name.</li>
 * <li>exclude_admin (boolean) (true): Exclude the 'admin' user that is
 * installed bydefault.</li>
 * <li>show_fullname (boolean) (false): Show their full names.</li>
 * <li>hide_empty (boolean) (true): Don't show authors without any posts.</li>
 * <li>feed (string) (''): If isn't empty, show links to author's feeds.</li>
 * <li>feed_image (string) (''): If isn't empty, use this image to link to
 * feeds.</li>
 * <li>echo (boolean) (true): Set to false to return the output, instead of
 * echoing.</li>
 * <li>style (string) ('list'): Whether to display list of authors in list form
 * or as a string.</li>
 * <li>html (bool) (true): Whether to list the items in html for or plaintext.
 * </li>
 * </ul>
 *
 * @link https://codex.www.ads-software.com/Template_Tags/wp_list_authors
 * @since 1.2.0
 * @param array $args The argument array.
 * @return null|string The output, if echo is set to false.
 */
function wp_list_authors($args = '') {
	global $wpdb;

	$defaults = array(
		'optioncount' => false, 'exclude_admin' => true,
		'show_fullname' => false, 'hide_empty' => true,
		'feed' => '', 'feed_image' => '', 'feed_type' => '', 'echo' => true,
		'style' => 'list', 'html' => true
	);

	$r = wp_parse_args( $args, $defaults );
	extract($r, EXTR_SKIP);
	$return = '';

	/** @todo Move select to get_authors(). */
	$authors = $wpdb->get_results("SELECT ID, user_nicename from $wpdb->users " . ($exclude_admin ? "WHERE user_login <> 'admin' " : '') . "ORDER BY display_name");

	$author_count = array();
	foreach ((array) $wpdb->get_results("SELECT DISTINCT post_author, COUNT(ID) AS count FROM $wpdb->posts WHERE post_type = 'post' AND " . get_private_posts_cap_sql( 'post' ) . " GROUP BY post_author") as $row) {
		$author_count[$row->post_author] = $row->count;
	}

	foreach ( (array) $authors as $author ) {

		$link = '';

		$author = get_userdata( $author->ID );
		$posts = (isset($author_count[$author->ID])) ? $author_count[$author->ID] : 0;
		$name = $author->display_name;

		if ( $show_fullname && ($author->first_name != '' && $author->last_name != '') )
			$name = "$author->first_name $author->last_name";

		if( !$html ) {
			if ( $posts == 0 ) {
				if ( ! $hide_empty )
					$return .= $name . ', ';
			} else
				$return .= $name . ', ';

			// No need to go further to process HTML.
			continue;
		}

		if ( !($posts == 0 && $hide_empty) && 'list' == $style )
			$return .= '<option ';
		if ( $posts == 0 ) {
			if ( ! $hide_empty )
				$link = $name;
		} else {
			$link = 'value="' . get_author_posts_url($author->ID, $author->user_nicename) . '" title="' . sprintf(__("Posts by %s"), esc_attr($author->display_name)) . '">' . $name . ' ';

			if ( (! empty($feed_image)) || (! empty($feed)) ) {
				$link .= ' ';
				if (empty($feed_image))
					$link .= '(';
				$link .= '<a href="' . get_author_feed_link($author->ID) . '"';

				if ( !empty($feed) ) {
					$title = ' title="' . $feed . '"';
					$alt = ' alt="' . $feed . '"';
					$name = $feed;
					$link .= $title;
				}

				$link .= '>';

				if ( !empty($feed_image) )
					$link .= "<img src=\"$feed_image\" style=\"border: none;\"$alt$title" . ' />';
				else
					$link .= $name;

				$link .= '</a>';

				if ( empty($feed_image) )
					$link .= ')';
			}

			if ( $optioncount )
				$link .= ' ('. $posts . ')';

		}

		if ( !($posts == 0 && $hide_empty) && 'list' == $style )
			$return .= $link . '</option>';
		else if ( ! $hide_empty )
			$return .= $link . ', ';
	}

	$return = trim($return, ', ');

	if ( ! $echo )
		return $return;
	echo $return;
}

?>

    In my template i’m using this: 

    <select name="authors" id="authorslist" onchange="document.location.href=this.options[this.selectedIndex].value;">
	<option value="#">Pick an author</option>
	<?php wp_list_authors(); ?>
</select>

    This is not a good method. I don’t recommend it. I hope somebody will come with a better solution.

    If you’re looking for a widget that you could add to the sidebar, the KNR Author List widget can display a dropdown list of authors.

    By default, the KNR Author List displays the author list as an unordered list, but you can go to the widget settings and select ‘Show as dropdown’ to get the intended output.

    I think this might be what your looking for

    <?php wp_dropdown_users( $args ); ?>

    WP Drop Down Users

Viewing 5 replies - 1 through 5 (of 5 total)
  • The topic ‘drop down list for authors’ is closed to new replies.