我为感兴趣的人提供的完整工作代码
<?php
// Equipment Category Dropdown, thanks https://gist.github.com/2902509
class Walker_SlugValueCategoryDropdown extends Walker_CategoryDropdown {
function start_el(&$output, $category, $depth, $args) {
$pad = str_repeat(\' \', $depth * 3);
$cat_name = apply_filters(\'list_cats\', $category->name, $category);
//$output .= "<select name=\'exc_equipment_cat\' id=\'exc_equipment_cat\' class=\'postform\' data-select=\'select1\'>";
$output .= "\\t<option class=\\"level-$depth\\" value=\\"".$category->slug."\\"";
if ( $category->term_id == $args[\'selected\'] )
$output .= \' selected="selected"\';
$output .= \'>\';
$output .= $pad.$cat_name;
if ( $args[\'show_count\'] )
$output .= \' (\'. $category->count .\')\';
$output .= "</option>\\n";
//$output .= "</select>";
}
}
add_action( \'widgets_init\', \'register_equipment_search\' );
function register_equipment_search() {
register_widget( \'Equipment_Search\' );
}
//add_action("widgets_init", array(\'Equipment_Search\', \'register\'));
class Equipment_Search extends WP_Widget {
function Equipment_Search() {
$widget_ops = array( \'classname\' => \'agriquip\', \'description\' => __(\'Displays the Equipment Search Form\', \'agriquip\') );
$control_ops = array( \'width\' => 200, \'height\' => 350, \'id_base\' => \'agriquip-widget\' );
$this->WP_Widget( \'agriquip-widget\', __(\'Equipment Search\', \'agriquip\'), $widget_ops, $control_ops );
}
function widget( $args, $instance ) {
extract( $args );
$title = apply_filters(\'widget_title\', $instance[\'title\'] );
$tract_id = isset( $instance[\'kwtax\'] ) ? $instance[\'kwtax\'] : false;
$tract = wp_list_pluck(get_terms(\'exc_equipment_cat\', array(\'parent\' => $tract_id)), \'slug\');
$tractparent = get_term_by(\'id\', $tract_id , \'exc_equipment_cat\');
$tractparent = $tractparent->slug;
echo $before_widget;
// Display the widget title
if ( $title )
echo $before_title . $title . $after_title;
?>
<div>
<script type="text/Javascript">
jQuery(function ($){
$(document).ready(function () {
$(".kw").hide();
});
$(function(){
$(\'.postform\').change(function() {
var selectData = $(this).attr("data-select");
var selectValue = $(this).val();
$(\'.kw\').hide();
if($("fieldset[data-select=\'" + selectData + selectValue +"\']").css("display") == "none"){
$("fieldset[data-select^=\'" + selectData + "\']").hide();
$("fieldset[data-select=\'" + selectData + selectValue +"\']").show();
}
});
});
var values = <?php echo json_encode($tract); ?>;
values.push ("<?php echo $tractparent; ?>");
jQuery(\'.postform\').change(function(){
var j = jQuery(this);
if(values.indexOf(j.val()) >= 0) {
jQuery(\'.kw\').attr(\'data-select\', \'select1\' + j.val());
}
});
});
</script>
<form role="search" method="get" id="equipfilter" action="<?php bloginfo(\'url\'); ?>/">
<fieldset>
<?php
echo \'KW Category Id\' .$tract_id;
$dropdown_args = array(
\'taxonomy\' => \'exc_equipment_cat\',
\'name\' => \'exc_equipment_cat\',
\'show_count\' => 1,
\'orderby\' => \'name\',
\'hierarchical\' => true,
\'echo\' => 0,
\'walker\' => new Walker_SlugValueCategoryDropdown
);
wp_dropdown_categories( $dropdown_args );
$select = wp_dropdown_categories($dropdown_args);
$select = preg_replace("#<select([^>]*)>#", "<select$1 data-select=\'select1\'>", $select);
echo $select;
?>
</fieldset>
<fieldset class="kw" data-select="select1">
<legend>Kw Range:</legend>
<input type="text" name="kw_min" placeholder="min" value><br />
<input type="text" name="kw_max" placeholder="max" value>
</fieldset>
<fieldset>
<legend>Price Range:</legend>
<input type="text" name="pr_min" placeholder="from" value><br />
<input type="text" name="pr_max" placeholder="to" value>
</fieldset>
<input type="submit" id="filtersubmit" value="Search" />
</form></div>
<?php
echo $after_widget;
}
function update( $new_instance, $old_instance ) {
$instance = $old_instance;
//Strip tags from title and name to remove HTML
$instance[\'title\'] = strip_tags( $new_instance[\'title\'] );
$instance[\'kwtax\'] = strip_tags( $new_instance[\'kwtax\'] );
return $instance;
}
function form( $instance ) {
//Set up some default widget settings.
$defaults = array( \'title\' => __(\'Equipment Search\', \'agriquip\'), \'kwtax\' => \'\');
$instance = wp_parse_args( (array) $instance, $defaults );
?>
<p>
<label for="<?php echo $this->get_field_id( \'title\' ); ?>"><?php _e(\'Title:\', \'agriquip\'); ?></label>
<input id="<?php echo $this->get_field_id( \'title\' ); ?>" name="<?php echo $this->get_field_name( \'title\' ); ?>" value="<?php echo $instance[\'title\']; ?>" class="widefat" />
</p>
<p>
<select id="<?php echo $this->get_field_id(\'kwtax\'); ?>" name="<?php echo $this->get_field_name(\'kwtax\'); ?>" class="widefat" style="width:100%;">
<?php foreach(get_terms(\'exc_equipment_cat\',\'parent=0&hide_empty=0\') as $term) { ?>
<option <?php selected( $instance[\'kwtax\'], $term->term_id ); ?> value="<?php echo $term->term_id; ?>"><?php echo $term->name; ?></option>
<?php } ?>
</select>
</p>
<?php
}
}
?>
