/**
* Create dropdown HTML content of users.
*
* The content can either be displayed, which it is by default or retrieved by
* setting the 'echo' argument. The 'include' and 'exclude' arguments do not
* need to be used; all users will be displayed in that case. Only one can be
* used, either 'include' or 'exclude', but not both.
*
* The available arguments are as follows:
* <ol>
* <li>show_option_all - Text to show all and whether HTML option exists.</li>
* <li>show_option_none - Text for show none and whether HTML option exists.</li>
* <li>hide_if_only_one_author - Don't create the dropdown if there is only one user.</li>
* <li>orderby - SQL order by clause for what order the users appear. Default is 'display_name'.</li>
* <li>order - Default is 'ASC'. Can also be 'DESC'.</li>
* <li>include - User IDs to include.</li>
* <li>exclude - User IDs to exclude.</li>
* <li>multi - Default is 'false'. Whether to skip the ID attribute on the 'select' element. A 'true' value is overridden when id argument is set.</li>
* <li>show - Default is 'display_name'. User table column to display. If the selected item is empty then the user_login will be displayed in parentheses</li>
* <li>echo - Default is '1'. Whether to display or retrieve content.</li>
* <li>selected - Which User ID is selected.</li>
* <li>include_selected - Always include the selected user ID in the dropdown. Default is false.</li>
* <li>name - Default is 'user'. Name attribute of select element.</li>
* <li>id - Default is the value of the 'name' parameter. ID attribute of select element.</li>
* <li>class - Class attribute of select element.</li>
* <li>blog_id - ID of blog (Multisite only). Defaults to ID of current blog.</li>
* <li>who - Which users to query. Currently only 'authors' is supported. Default is all users.</li>
* </ol>
*
* @since 2.3.0
* @uses $nxtdb NXTClass database object for queries
*
* @param string|array $args Optional. Override defaults.
* @return string|null Null on display. String of HTML content on retrieve.
*/
function nxt_dropdown_users($args = '')
{
$defaults = array('show_option_all' => '', 'show_option_none' => '', 'hide_if_only_one_author' => '', 'orderby' => 'display_name', 'order' => 'ASC', 'include' => '', 'exclude' => '', 'multi' => 0, 'show' => 'display_name', 'echo' => 1, 'selected' => 0, 'name' => 'user', 'class' => '', 'id' => '', 'blog_id' => $GLOBALS['blog_id'], 'who' => '', 'include_selected' => false);
$defaults['selected'] = is_author() ? get_query_var('author') : 0;
$r = nxt_parse_args($args, $defaults);
extract($r, EXTR_SKIP);
$query_args = nxt_array_slice_assoc($r, array('blog_id', 'include', 'exclude', 'orderby', 'order', 'who'));
$query_args['fields'] = array('ID', $show);
$users = get_users($query_args);
$output = '';
if (!empty($users) && (empty($hide_if_only_one_author) || count($users) > 1)) {
$name = esc_attr($name);
if ($multi && !$id) {
$id = '';
} else {
$id = $id ? " id='" . esc_attr($id) . "'" : " id='{$name}'";
}
$output = "<select name='{$name}'{$id} class='{$class}'>\n";
if ($show_option_all) {
$output .= "\t<option value='0'>{$show_option_all}</option>\n";
}
if ($show_option_none) {
$_selected = selected(-1, $selected, false);
$output .= "\t<option value='-1'{$_selected}>{$show_option_none}</option>\n";
}
$found_selected = false;
foreach ((array) $users as $user) {
$user->ID = (int) $user->ID;
$_selected = selected($user->ID, $selected, false);
if ($_selected) {
$found_selected = true;
}
$display = !empty($user->{$show}) ? $user->{$show} : '(' . $user->user_login . ')';
$output .= "\t<option value='{$user->ID}'{$_selected}>" . esc_html($display) . "</option>\n";
}
if ($include_selected && !$found_selected && $selected > 0) {
$user = get_userdata($selected);
$_selected = selected($user->ID, $selected, false);
$display = !empty($user->{$show}) ? $user->{$show} : '(' . $user->user_login . ')';
$output .= "\t<option value='{$user->ID}'{$_selected}>" . esc_html($display) . "</option>\n";
}
$output .= "</select>";
}
$output = apply_filters('nxt_dropdown_users', $output);
if ($echo) {
echo $output;
}
return $output;
}
/**
* 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 form or plaintext.
* </li>
* </ul>
*
* @link http://codex.nxtclass.org/Template_Tags/nxt_list_authors
* @since 1.2.0
* @param array $args The argument array.
* @return null|string The output, if echo is set to false.
*/
function nxt_list_authors($args = '')
{
global $nxtdb;
$defaults = array('orderby' => 'name', 'order' => 'ASC', 'number' => '', 'optioncount' => false, 'exclude_admin' => true, 'show_fullname' => false, 'hide_empty' => true, 'feed' => '', 'feed_image' => '', 'feed_type' => '', 'echo' => true, 'style' => 'list', 'html' => true);
$args = nxt_parse_args($args, $defaults);
extract($args, EXTR_SKIP);
$return = '';
$query_args = nxt_array_slice_assoc($args, array('orderby', 'order', 'number'));
$query_args['fields'] = 'ids';
$authors = get_users($query_args);
$author_count = array();
foreach ((array) $nxtdb->get_results("SELECT DISTINCT post_author, COUNT(ID) AS count FROM {$nxtdb->posts} WHERE post_type = 'post' AND " . get_private_posts_cap_sql('post') . " GROUP BY post_author") as $row) {
$author_count[$row->post_author] = $row->count;
}
foreach ($authors as $author_id) {
$author = get_userdata($author_id);
if ($exclude_admin && 'admin' == $author->display_name) {
continue;
}
$posts = isset($author_count[$author->ID]) ? $author_count[$author->ID] : 0;
if (!$posts && $hide_empty) {
continue;
}
$link = '';
if ($show_fullname && $author->first_name && $author->last_name) {
$name = "{$author->first_name} {$author->last_name}";
} else {
$name = $author->display_name;
}
if (!$html) {
$return .= $name . ', ';
continue;
// No need to go further to process HTML.
}
if ('list' == $style) {
$return .= '<li>';
}
$link = '<a href="' . get_author_posts_url($author->ID, $author->user_nicename) . '" title="' . esc_attr(sprintf(__("Posts by %s"), $author->display_name)) . '">' . $name . '</a>';
if (!empty($feed_image) || !empty($feed)) {
$link .= ' ';
if (empty($feed_image)) {
$link .= '(';
}
$link .= '<a href="' . get_author_feed_link($author->ID) . '"';
$alt = $title = '';
if (!empty($feed)) {
$title = ' title="' . esc_attr($feed) . '"';
$alt = ' alt="' . esc_attr($feed) . '"';
$name = $feed;
$link .= $title;
}
$link .= '>';
if (!empty($feed_image)) {
$link .= '<img src="' . esc_url($feed_image) . '" style="border: none;"' . $alt . $title . ' />';
} else {
$link .= $name;
}
$link .= '</a>';
if (empty($feed_image)) {
$link .= ')';
}
}
if ($optioncount) {
$link .= ' (' . $posts . ')';
}
$return .= $link;
$return .= 'list' == $style ? '</li>' : ', ';
}
$return = rtrim($return, ', ');
if (!$echo) {
return $return;
}
echo $return;
}