我有一个wordpress主题，其中有一个名为"My-Post Cycle"的小部件，它允许我发布博客中的条目。我希望能够选择哪些帖子"类别"与小部件一起显示。有了"类别ID"，我如何编辑小部件PHP以只显示我选择的类别ID。这是代码：
<?php
// =============================== My Post Cycle widget ======================================
class MY_CycleWidget extends WP_Widget {
/** constructor */
function MY_CycleWidget() {
parent::WP_Widget(false, $name = 'My - Post Cycle');
}
/** @see WP_Widget::widget */
function widget($args, $instance) {
extract( $args );
$title = apply_filters('widget_title', $instance['title']);
$limit = apply_filters('widget_limit', $instance['limit']);
$category = apply_filters('widget_category', $instance['category']);
$count = apply_filters('widget_count', $instance['count']);
?>
<?php echo $before_widget; ?>
<?php if ( $title )
echo $before_title . $title . $after_title; ?>
<?php if($category=="testi"){?>
<script type="text/javascript">
jQuery(function(){
jQuery('#slides').slides({
effect: 'fade',
crossfade: true,
preload: true,
generateNextPrev: true,
autoHeight: true
});
});
</script>
<div id="slides">
<div class="slides_container">
<?php $limittext = $limit;?>
<?php global $more; $more = 0;?>
<?php query_posts("posts_per_page=". $count ."&post_type=" . $category);?>
<?php while (have_posts()) : the_post(); ?>
<?php
$custom = get_post_custom($post->ID);
$testiname = $custom["my_testi_caption"][0];
$testiurl = $custom["my_testi_url"][0];
$testiinfo = $custom["my_testi_info"][0];
?>
<div class="testi_item">
<?php if($limittext=="" || $limittext==0){ ?>
<?php the_excerpt(); ?>
<?php }else{ ?>
<?php $excerpt = get_the_excerpt(); echo my_string_limit_words($excerpt,$limittext);?>
<?php } ?>
<div class="name-testi">
<span class="user"><?php echo $testiname; ?></span>,
<a href="http://<?php echo $testiurl; ?>"><?php echo $testiurl; ?></a><br/>
<span class="info"><?php echo $testiinfo; ?></span>
</div>
</div>
<?php endwhile; ?>
<?php wp_reset_query(); ?>
</div>
</div>
<!-- end of testimonials -->
<?php } elseif($category=="portfolio"){ ?>
<script type="text/javascript">
jQuery(function(){
jQuery('#slides').slides({
effect: 'fade',
crossfade: true,
preload: true,
generateNextPrev: true,
autoHeight: true
});
});
</script>
<div id="slides">
<div class="slides_container">
<?php $limittext = $limit;?>
<?php global $more; $more = 0;?>
<?php query_posts("posts_per_page=". $count ."&post_type=" . $category);?>
<?php while (have_posts()) : the_post(); ?>
<?php
$thumb = get_post_thumbnail_id();
$img_url = wp_get_attachment_url( $thumb,'full'); //get img URL
$image = aq_resize( $img_url, 250, 150, true ); //resize & crop img
?>
<div class="item">
<?php if($limittext=="" || $limittext==0){ ?>
<figure class="featured-thumbnail">
<a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>"><img src="<?php echo $image ?>" alt="<?php the_title(); ?>" /></a>
</figure>
<?php }else{ ?>
<figure class="featured-thumbnail">
<a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>"><img src="<?php echo $image ?>" alt="<?php the_title(); ?>" /></a>
</figure>
<?php $excerpt = get_the_excerpt(); echo my_string_limit_words($excerpt,$limittext); } ?>
</div>
<?php endwhile; ?>
<?php wp_reset_query(); ?>
</div>
</div>
<!-- end of portfolio_cycle -->
<?php } else { ?>
<script type="text/javascript">
jQuery(document).ready(function(){
jQuery('#slider-code').tinycarousel({ axis: 'y'});
});
</script>
<div id="slider-code">
<a class="buttons prev" href="#">left</a>
<div class="viewport">
<ul class="overview">
<?php $limittext = $limit;?>
<?php global $more; $more = 0;?>
<?php query_posts("posts_per_page=" . $count . "&post_type=" . $category);?>
<?php while (have_posts()) : the_post(); ?>
<?php
$custom = get_post_custom($post->ID);
$period = $custom["period"][0];
?>
<li>
<?php if($limittext=="" || $limittext==0){ ?>
<h5><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h5>
<b><?php echo $period; ?></b>
<em><a href="#"><?php _e('view details', 'theme1831'); ?></a></em>
<?php }else{ ?>
<h5><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h5>
<b><?php echo $period; ?></b>
<div class="excerpt"><?php $excerpt = get_the_excerpt(); echo my_string_limit_words($excerpt,$limittext); ?></div>
<em><a href="#"><?php _e('view details', 'theme1831'); ?></a></em>
<?php } ?>
</li>
<?php endwhile; ?>
<?php wp_reset_query(); ?>
</ul>
</div>
<a class="buttons next" href="#">right</a>
</div>
<!-- end of post_cycle -->
<?php }?>
<?php echo $after_widget; ?>
<?php
}
/** @see WP_Widget::update */
function update($new_instance, $old_instance) {
return $new_instance;
}
/** @see WP_Widget::form */
function form($instance) {
$title = esc_attr($instance['title']);
$limit = esc_attr($instance['limit']);
$category = esc_attr($instance['category']);
$count = esc_attr($instance['count']);
?>
<p><label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('Title:', 'theme1831'); ?> <input class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" type="text" value="<?php echo $title; ?>" /></label></p>
<p><label for="<?php echo $this->get_field_id('limit'); ?>"><?php _e('Limit Text:', 'theme1831'); ?> <input class="widefat" id="<?php echo $this->get_field_id('limit'); ?>" name="<?php echo $this->get_field_name('limit'); ?>" type="text" value="<?php echo $limit; ?>" /></label></p>
<p><label for="<?php echo $this->get_field_id('count'); ?>"><?php _e('Posts per page:', 'theme1831'); ?><input class="widefat" style="width:30px; display:block; text-align:center" id="<?php echo $this->get_field_id('count'); ?>" name="<?php echo $this->get_field_name('count'); ?>" type="text" value="<?php echo $count; ?>" /></label></p>
<p><label for="<?php echo $this->get_field_id('category'); ?>"><?php _e('Show profile link:', 'theme1831'); ?><br />
<select id="<?php echo $this->get_field_id('category'); ?>" name="<?php echo $this->get_field_name('category'); ?>" style="width:150px;" >
<option value="testi" <?php echo ($category === 'testi' ? ' selected="selected"' : ''); ?>>Testimonials</option>
<option value="portfolio" <?php echo ($category === 'portfolio' ? ' selected="selected"' : ''); ?> >Portfolio</option>
<option value="" <?php echo ($category === '' ? ' selected="selected"' : ''); ?>>Blog</option>
</select>
</label></p>
<?php
}
} // class Cycle Widget
?>
谢谢你的帮助。
更新：
我无法让"我的帖子周期"小部件按我的意愿工作，所以我决定使用另一个主题附带的小部件（"我最近的帖子"）。它看起来没有另一个好看，但它允许我发布一个类别的帖子。也许看到代码，会让人想办法让第一个小部件像这个一样工作，但保持风格。这是它的代码：
<?php
// =============================== My Recent Posts (News widget) ======================================
class MY_PostWidget extends WP_Widget {
/** constructor */
function MY_PostWidget() {
parent::WP_Widget(false, $name = 'My - Recent Posts');
}
/** @see WP_Widget::widget */
function widget($args, $instance) {
extract( $args );
$title = apply_filters('widget_title', $instance['title']);
$category = apply_filters('widget_category', $instance['category']);
$post_format = apply_filters('widget_post_format', $instance['post_format']);
$linktext = apply_filters('widget_linktext', $instance['linktext']);
$linkurl = apply_filters('widget_linkurl', $instance['linkurl']);
$count = apply_filters('widget_count', $instance['count']);
$sort_by = apply_filters('widget_sort_by', $instance['sort_by']);
$excerpt_count = apply_filters('widget_excerpt_count', $instance['excerpt_count']);
?>
<?php echo $before_widget; ?>
<?php if ( $title )
echo $before_title . $title . $after_title; ?>
<?php if($post_format == 'post-format-standard') {
$args = array(
'showposts' => $count,
'category_name' => $category,
'orderby' => $sort_by,
'tax_query' => array(
'relation' => 'AND',
array(
'taxonomy' => 'post_format',
'field' => 'slug',
'terms' => array('post-format-aside', 'post-format-gallery', 'post-format-link', 'post-format-image', 'post-format-quote', 'post-format-audio', 'post-format-video'),
'operator' => 'NOT IN'
)
)
);
} else {
$args = array(
'showposts' => $count,
'category_name' => $category,
'orderby' => $sort_by,
'tax_query' => array(
'relation' => 'AND',
array(
'taxonomy' => 'post_format',
'field' => 'slug',
'terms' => array($post_format)
)
)
);
} ?>
<?php $wp_query = new WP_Query( $args ); ?>
<ul class="latestpost">
<?php if ($wp_query->have_posts()) : while ($wp_query->have_posts()) : $wp_query->the_post();?>
<li class="clearfix">
<?php if(has_post_thumbnail()) { ?>
<?php
$thumb = get_post_thumbnail_id();
$img_url = wp_get_attachment_url( $thumb,'full'); //get img URL
$image = aq_resize( $img_url, 100, 100, true ); //resize & crop img
?>
<figure class="featured-thumbnail">
<a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>"><img src="<?php echo $image ?>" alt="<?php the_title(); ?>" /></a>
</figure>
<?php } ?>
<time datetime="<?php the_time('Y-m-d'TH:i'); ?>"><?php the_time('F j, Y'); ?></time>
<h4><a href="<?php the_permalink() ?>" rel="bookmark" title="<?php _e('Permanent Link to', 'theme1831');?> <?php the_title_attribute(); ?>"><?php the_title(); ?></a></h4>
<?php if($excerpt_count!="") { ?>
<div class="excerpt">
<?php $excerpt = get_the_excerpt(); echo my_string_limit_words($excerpt,$excerpt_count);?>
</div>
<?php } ?>
<a href="<?php the_permalink() ?>" class="link"><?php _e('Read more', 'theme1831'); ?></a>
</li>
<?php endwhile; ?>
</ul>
<?php endif; ?>
<?php $wp_query = null; $wp_query = $temp;?>
<!-- Link under post cycle -->
<?php if($linkurl !=""){?>
<a href="<?php echo $linkurl; ?>" class="button"><?php echo $linktext; ?></a>
<?php } ?>
<?php echo $after_widget; ?>
<?php
}
/** @see WP_Widget::update */
function update($new_instance, $old_instance) {
return $new_instance;
}
/** @see WP_Widget::form */
function form($instance) {
$title = esc_attr($instance['title']);
$category = esc_attr($instance['category']);
$post_format = esc_attr($instance['post_format']);
$linktext = esc_attr($instance['linktext']);
$linkurl = esc_attr($instance['linkurl']);
$count = esc_attr($instance['count']);
$sort_by = esc_attr($instance['sort_by']);
$excerpt_count = esc_attr($instance['excerpt_count']);
?>
<p><label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('Title:', 'theme1831'); ?> <input class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" type="text" value="<?php echo $title; ?>" /></label></p>
<p><label for="<?php echo $this->get_field_id('category'); ?>"><?php _e('Category Slug:', 'theme1831'); ?> <input class="widefat" id="<?php echo $this->get_field_id('category'); ?>" name="<?php echo $this->get_field_name('category'); ?>" type="text" value="<?php echo $category; ?>" /></label></p>
<p><label for="<?php echo $this->get_field_id('post_format'); ?>"><?php _e('Post format:', 'theme1831'); ?><br />
<select id="<?php echo $this->get_field_id('post_format'); ?>" name="<?php echo $this->get_field_name('post_format'); ?>" style="width:150px;" >
<option value="post-format-standard" <?php echo ($post_format === 'post-format-standard' ? ' selected="selected"' : ''); ?>>Standard</option>
<option value="post-format-aside" <?php echo ($post_format === 'post-format-aside' ? ' selected="selected"' : ''); ?>>Aside</option>
<option value="post-format-quote" <?php echo ($post_format === 'post-format-quote' ? ' selected="selected"' : ''); ?> >Quote</option>
<option value="post-format-link" <?php echo ($post_format === 'post-format-link' ? ' selected="selected"' : ''); ?> >Link</option>
<option value="post-format-image" <?php echo ($post_format === 'post-format-image' ? ' selected="selected"' : ''); ?> >Image</option>
<option value="post-format-gallery" <?php echo ($post_format === 'post-format-gallery' ? ' selected="selected"' : ''); ?> >Gallery</option>
<option value="post-format-audio" <?php echo ($post_format === 'post-format-audio' ? ' selected="selected"' : ''); ?> >Audio</option>
<option value="post-format-video" <?php echo ($post_format === 'post-format-video' ? ' selected="selected"' : ''); ?> >Video</option>
</select>
</label></p>
<p><label for="<?php echo $this->get_field_id('sort_by'); ?>"><?php _e('Post order:', 'theme1831'); ?><br />
<select id="<?php echo $this->get_field_id('sort_by'); ?>" name="<?php echo $this->get_field_name('sort_by'); ?>" style="width:150px;" >
<option value="date" <?php echo ($sort_by === 'date' ? ' selected="selected"' : ''); ?>>Date</option>
<option value="title" <?php echo ($sort_by === 'title' ? ' selected="selected"' : ''); ?>>Title</option>
<option value="comment_count" <?php echo ($sort_by === 'comment_count' ? ' selected="selected"' : ''); ?>>Comment Count</option>
<option value="rand" <?php echo ($sort_by === 'rand' ? ' selected="selected"' : ''); ?>>Random</option>
</select>
</label></p>
<p><label for="<?php echo $this->get_field_id('count'); ?>"><?php _e('Posts per page:'); ?><input class="widefat" style="width:30px; display:block; text-align:center" id="<?php echo $this->get_field_id('count'); ?>" name="<?php echo $this->get_field_name('count'); ?>" type="text" value="<?php echo $count; ?>" /></label></p>
<p><label for="<?php echo $this->get_field_id('excerpt_count'); ?>"><?php _e('Excerpt length (words):'); ?><input class="widefat" style="width:30px; display:block; text-align:center" id="<?php echo $this->get_field_id('excerpt_count'); ?>" name="<?php echo $this->get_field_name('excerpt_count'); ?>" type="text" value="<?php echo $excerpt_count; ?>" /></label></p>
<p><label for="<?php echo $this->get_field_id('linktext'); ?>"><?php _e('Link Text:', 'theme1831'); ?> <input class="widefat" id="<?php echo $this->get_field_id('linktext'); ?>" name="<?php echo $this->get_field_name('linktext'); ?>" type="text" value="<?php echo $linktext; ?>" /></label></p>
<p><label for="<?php echo $this->get_field_id('linkurl'); ?>"><?php _e('Link Url:', 'theme1831'); ?> <input class="widefat" id="<?php echo $this->get_field_id('linkurl'); ?>" name="<?php echo $this->get_field_name('linkurl'); ?>" type="text" value="<?php echo $linkurl; ?>" /></label></p>
<?php
}
} // class Widget
?>
您应该将参数post_type和category_name更改为widget方法内部调用的query_posts()函数。
<?php query_posts("posts_per_page=". $count . "&category_name=" . $category); ?>
参考：WP_Query Category Parameters