我一直试图调整这个，但我尝试的确没有用，这是一个我使用短代码的插件，在我将短代码放在模板上的位置并不重要，它总是显得正确在标题下方的顶部，即使上面有图像或文字。为什么会这样？
<?php
/*
Plugin Name: Simple Taxonomy Chain menu
Plugin URI: http://gifts.wordpress-filter.com/
Description: Simple taxonomy chain menu shortcode realized by drop-downs. This is gift plugin for WordPress Meta Data Filter & Taxonomies Filter
Author: realmag777
Version: 1.0.0
Author URI: http://www.pluginus.net/
*/
//[mdf_chain_menu taxonomy='product_cat' exclude='' show_count=1 post_slug='product' button_title='Watch It' target='_blank']
//10-11-2014
class MDTF_ChainMenu {
private $button_title = 'GO!';
private $target = '_self';
public function init() {
add_shortcode('mdf_chain_menu', array($this, 'draw_chain_menu'));
add_action('wp_head', array($this, 'wp_head'), 1);
add_action('wp_ajax_mdf_get_chain_select', array($this, 'get_chain_select'));
add_action('wp_ajax_nopriv_mdf_get_chain_select', array($this, 'get_chain_select'));
}
public function wp_head() {
wp_enqueue_script('jquery');
}
public function wp_footer() {
?>
<script type="text/javascript">
var ajaxurl = "<?php echo admin_url('admin-ajax.php'); ?>";
jQuery(function () {
jQuery.fn.life = function (types, data, fn) {
jQuery(this.context).on(types, this.selector, data, fn);
return this;
};
//+++
jQuery('.mdf_chain_menu').life('change', function () {
var cat_id = jQuery(this).val();
var _this = this;
if (cat_id > 0) {
var data = {
action: "mdf_get_chain_select",
term_id: cat_id,
taxonomy: jQuery(this).data('taxonomy'),
show_count: jQuery(this).data('show-count'),
post_slug: jQuery(this).data('post-slug'),
exclude: jQuery(this).data('exclude')
};
jQuery.post(ajaxurl, data, function (responce) {
jQuery(_this).nextAll('.mdf_chain_menu').remove();
jQuery(_this).nextAll('.mdf_chain_menu_posts').remove();
jQuery(_this).nextAll('.mdf_chain_menu_post_button').remove();
jQuery(_this).after(responce);
});
} else {
jQuery(this).nextAll('.mdf_chain_menu').hide(200, function () {
jQuery(this).remove();
});
jQuery(this).nextAll('.mdf_chain_menu_posts').hide(200, function () {
jQuery(this).remove();
});
jQuery(this).nextAll('.mdf_chain_menu_post_button').hide(200, function () {
jQuery(this).remove();
});
}
});
//+++
jQuery('.mdf_chain_menu_posts').life('change', function () {
var link = jQuery(this).val();
jQuery(this).nextAll('.mdf_chain_menu_post_button').remove();
if (link.length) {
jQuery(this).after('<a href="' + link + '" class="button mdf_chain_menu_post_button" target="<?php echo $this->target ?>"><?php echo $this->button_title ?></a>');
}
});
});
</script>
<?php
}
//ajax
public function get_chain_select() {
$args = array(
'term_id' => $_REQUEST['term_id'],
'taxonomy' => $_REQUEST['taxonomy'],
'show_count' => $_REQUEST['show_count'],
'post_slug' => $_REQUEST['post_slug'],
'exclude' => $_REQUEST['exclude']
);
$childs_ids = get_term_children($_REQUEST['term_id'], $_REQUEST['taxonomy']);
if (!empty($childs_ids)) {
$this->generate_tax_select($args);
} else {
$this->generate_post_select($_REQUEST['term_id'], $_REQUEST['taxonomy'], $_REQUEST['post_slug']);
}
exit;
}
private function generate_post_select($term_id, $taxonomy='category', $post_slug = 'post') {
$args = array(
'posts_per_page' => -1,
'orderby' => 'title',
'order' => 'ASC',
'post_type' => $post_slug,
'tax_query' => array(
'relation' => 'AND',
array(
'taxonomy' => $taxonomy,
'field' => 'term_id',
'terms' => $term_id
)
)
);
$posts = get_posts($args);
if (!empty($posts)) {
?>
<select class="mdf_chain_menu_posts input-medium">
<option value=""><?php _e('Select post', 'meta-data-filter') ?></option>
<?php foreach ($posts as $post) : ?>
<option value="<?php echo get_permalink($post->ID) ?>"><?php echo $post->post_title ?></option>
<?php endforeach; ?>
</select>
<?php
}
}
//shortcode action
public function draw_chain_menu($args) {
add_action('wp_footer', array($this, 'wp_footer'), 9999);
if (!isset($args['term_id'])) {
$args['term_id'] = 0;
}
if (!isset($args['show_count'])) {
$args['show_count'] = 0;
}
if (!isset($args['post_slug'])) {
$args['post_slug'] = 'post';
}
//***
if (isset($args['button_title'])) {
$this->button_title = __($args['button_title'], 'meta-data-filter');
}
if (isset($args['target'])) {
$this->target = $args['target'];
}
//***
$this->generate_tax_select($args);
}
private function generate_tax_select($args) {
$terms = $this->get_terms($args);
if (!empty($terms)):
?>
<select class="mdf_chain_menu" data-taxonomy="<?php echo $args['taxonomy'] ?>" data-exclude="<?php echo $args['exclude'] ?>" data-show-count="<?php echo $args['show_count'] ?>" data-post-slug="<?php echo $args['post_slug'] ?>">
<option value="0"><?php _e('Choose', 'meta-data-filter') ?></option>
<?php foreach ($terms as $term) : ?>
<option value="<?php echo $term['term_id'] ?>"><?php echo $term['name'] ?><?php if ($args['show_count']): ?> (<?php echo $term['count'] ?>)<?php endif; ?></option>
<?php endforeach; ?>
</select>
<?php
endif;
}
private function get_terms($args) {
$cats_objects = get_categories(array(
'orderby' => 'name',
'order' => 'ASC',
'style' => 'list',
'show_count' => 0,
'hide_empty' => 1,
'use_desc_for_title' => 1,
'child_of' => 0,
'hierarchical' => true,
'title_li' => '',
'show_option_none' => '',
'number' => NULL,
'echo' => 0,
'depth' => 0,
'current_category' => 0,
'pad_counts' => 0,
'exclude' => $args['exclude'],
'taxonomy' => $args['taxonomy'],
'walker' => 'Walker_Category'));
$cats = array();
if (!empty($cats_objects)) {
foreach ($cats_objects as $value) {
if ($value->category_parent == $args['term_id']) {
$cats[$value->term_id] = array();
$cats[$value->term_id]['term_id'] = $value->term_id;
$cats[$value->term_id]['name'] = $value->name;
$cats[$value->term_id]['count'] = $value->count;
/*
if($get_childs) {
$cats[$value->term_id]['childs'] = $this->assemble_terms_childs($cats_objects, $value->term_id);
}
*
*/
}
}
}
return $cats;
}
private function assemble_terms_childs($cats_objects, $parent_id) {
$res = array();
foreach ($cats_objects as $value) {
if ($value->category_parent == $parent_id) {
$res[$value->term_id]['term_id'] = $value->term_id;
$res[$value->term_id]['name'] = $value->name;
$res[$value->term_id]['count'] = $value->count;
$res[$value->term_id]['childs'] = $this->assemble_terms_childs($cats_objects, $value->term_id);
}
}
return $res;
}
}
add_action('init', array((new MDTF_ChainMenu()), 'init'), 1);
答案 0 :(得分：2)
您应该返回HTML而不是在短代码方法中回显它。例如：
return '<h1>Some Title</h1>';
而不是：
?><h1>Some Title</h1><?php