Question

我有很多WordPress帖子，每个帖子都有两个标签，一个标签是State，另一个标签是Airport Code。

我可以使用以下说明从标签生成下拉菜单：http://www.wprecipes.com/wordpress-hack-display-your-tags-in-a-dropdown-menu

但是，我想实际上有两个不同的下拉菜单，一个用alpha顺序列出状态，另一个用alpha顺序列出机场。每个机场总是三个大写字母。我是否可以添加一个参数，以便我可以为机场创建一个下拉列表，为州创建另一个下拉列表？

如果它包含小写字母，则会进入State下拉列表。如果没有小写，那就是机场。

Answer 1

我将附带的教程中的代码段修改为以下内容：

function dropdown_tag_cloud( $args = '' ) {//supported: 'all', 'airport', 'state'
    $defaults = array(
        'smallest' => 8, 'largest' => 22, 'unit' => 'pt', 'number' => 45,
        'format' => 'flat', 'orderby' => 'name', 'order' => 'ASC',
        'exclude' => '', 'include' => '', 'tags_mode' => 'all'
    );
    $args = wp_parse_args( $args, $defaults );

    print_r($args);


    $tags = get_tags( array_merge($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 ) ){
        echo "wp error...";
        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 ) {

        if($tags_mode == 'airport'){

            //if uppercased tag is equal to the tag
            //which means current tag already uppercased.
            if(!(strtoupper($tag->name) == $tag->name))
                continue;//skip current tag

        } else if($tags_mode == 'state'){
            //if uppercased tag is equal to the tag
            //which means current tag already uppercased.
            if((strtoupper($tag->name) == $tag->name))
                continue;//skip current 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) && $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 =& $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 );
}

基本上，我只是添加了一个名为tags_mode的新参数，并支持以下参数：

all
airport
state

然后，在dropdown_generate_tag_cloud()中，我添加了以下代码：

    if($tags_mode == 'airport'){

        if(!(strtoupper($tag->name) == $tag->name))
            continue;//skip current tag

    } else if($tags_mode == 'state'){
        if((strtoupper($tag->name) == $tag->name))
            continue;//skip current tag
    }

此添加代码段中的主要想法是：

strtoupper($tag->name) == $tag->name

它的工作方式如下：如果大写标签名称等于原始标签名称。这意味着，当前标签已经是大写的（或等于机场代码）。

要实现它，就像教程所说的那样。只是，您需要添加新参数：

<?php dropdown_tag_cloud('number=0&order=asc&tags_mode=state'); ?>

请注意＆amp; tags_mode =州

试试看，告诉我这是不是你想要的。

如果包含小写字母，则从数组中删除

1 个答案: