如何在wordpress中以明智的方式獲得搜索結果

Question

我想要搜索任何單詞並獲得匹配的結果作爲明智的類別以在列中的不同類別下顯示它們。如何獲取搜索頁面的quire代碼？

Answer 1

我建議您使用此解決方案進行分類搜索。

class Category_Wise_Search_Widget extends WP_Widget { 

    /** 
    * Register widget with WordPress. 
    */ 
    public function __construct() { 

     parent::__construct(
      'category_wise_search', // Base ID 
      'Category Wise Search', // Name 
      array('classname' => 'widget_search','description' => __('A search form for your site with category', 'text_domain'),) // Args 
     ); 
    } 

    /** 
    * Front-end display of widget. 
    * 
    * @see WP_Widget::widget() 
    * 
    * @param array $args  Widget arguments. 
    * @param array $instance Saved values from database. 
    */ 
    public function widget($args, $instance) { 
    extract($args); 
    $title = apply_filters('widget_title', $instance['title']); 
    $default_select_text = strip_tags($instance['default_select_text']); 
    if (empty($instance['default_select_text'])) 
    $default_select_text = 'Any Category'; 
    $show_count  = ! empty($instance['count']) ? '1' : '0'; 
    $show_hierarchy = ! empty($instance['show_hierarchy']) ? '1' : '0'; 
    $default_cat = isset($instance['default_cat']) ? absint($instance['default_cat']) : 0; 
    $exclude = isset($instance['exclude'])?esc_attr($instance['exclude']):''; 
    $exclude_t = isset($instance['exclude_t'])?esc_attr($instance['exclude_t']):''; 
    if(isset($_GET['cat'])) 
    $default_cat =absint($_GET['cat']); 
    $cat_args = array('selected'=>$default_cat,'show_count' => $show_count, 'hierarchical' => $show_hierarchy,'show_option_all'=>$default_select_text,'echo'=>0,'id'=>'searchform_cat','exclude'=>$exclude,'exclude_tree'=>$exclude_t,'orderby'=>'name','order' => 'asc'); 
    ?> 
    <?php echo $before_widget; ?> 
    <?php if ($title) echo $before_title . $title . $after_title; ?> 

    <?php  
     $form= '<form role="search" method="get" id="searchform" action="' . esc_url(home_url('/')) . '" > 
    <div><label class="screen-reader-text" for="s">' . __('Search for:') . '</label> 
    <input type="text" value="' . get_search_query() . '" name="s" id="s" /> 
    '.wp_dropdown_categories(apply_filters('widget_categories_dropdown_args', $cat_args)).' 
    <input type="submit" id="searchsubmit" value="'. esc_attr__('Search') .'" /> 
    </div> 
    </form>'; 
    echo apply_filters('get_search_form', $form); 
    ?> 


    <?php echo $after_widget; ?> 
    <?php 
    // Reset the global $the_post as this query will have stomped on it 
    } 
    /** 
    * Sanitize widget form values as they are saved. 
    * 
    * @see WP_Widget::update() 
    * 
    * @param array $new_instance Values just sent to be saved. 
    * @param array $old_instance Previously saved values from database. 
    * 
    * @return array Updated safe values to be saved. 
    */ 
    public function update($new_instance, $old_instance) { 
     $instance = array(); 
     $instance['title'] = strip_tags($new_instance['title']); 
     $instance['default_select_text'] = strip_tags($new_instance['default_select_text']); 
     if($instance['default_select_text']=='') 
     $instance['default_select_text'] = 'Any Category'; 
     $instance['default_cat'] = ($new_instance['default_cat']); 
     $instance['count'] = !empty($new_instance['count']) ? 1 : 0; 
     $instance['show_hierarchy'] = !empty($new_instance['show_hierarchy']) ? 1 : 0; 
     $instance['exclude'] = strip_tags($new_instance['exclude']); 
     $instance['exclude_t'] = strip_tags($new_instance['exclude_t']); 
     return $instance; 
    } 

    /** 
    * Back-end widget form. 
    * 
    * @see WP_Widget::form() 
    * 
    * @param array $instance Previously saved values from database. 
    */ 
    public function form($instance) { 
    $title = $instance['title']; 

    if (isset($instance[ 'default_select_text' ])) { 
     $default_select_text = $instance[ 'default_select_text' ]; 
    } 
    else { 
     $default_select_text = __('Any Category', 'text_domain'); 
    } 
    $count = isset($instance['count']) ? (bool) $instance['count'] :false; 
    $show_hierarchy = isset($instance['show_hierarchy']) ? (bool) $instance['show_hierarchy'] : true; 
    $default_cat = isset($instance['default_cat']) ? absint($instance['default_cat']) : 0; 
    $exclude = isset($instance['exclude']) ? strip_tags($instance['exclude']) : ''; 
    $exclude_t = isset($instance['exclude_t']) ? strip_tags($instance['exclude_t']) : ''; 
    ?> 
    <p> 
     <label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('Title:'); ?></label> 
     <input class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" type="text" value="<?php echo esc_attr($title); ?>" /> 
    </p> 
    <p> 
     <label for="<?php echo $this->get_field_id('default_select_text'); ?>"><?php _e('Default select box text:'); ?></label> 
     <input class="widefat" id="<?php echo $this->get_field_id('default_select_text'); ?>" name="<?php echo $this->get_field_name('default_select_text'); ?>" type="text" value="<?php echo esc_attr($default_select_text); ?>" /> 
    </p> 
    <p><label for="<?php echo $this->get_field_id('exclude'); ?>"><?php _e('Exclude Categories :'); ?></label> 
     <input class="widefat" id="<?php echo $this->get_field_id('exclude'); ?>" name="<?php echo $this->get_field_name('exclude'); ?>" type="text" value="<?php echo $exclude; ?>" />  
     <br>Enter a comma seperated category ID.<br>ex : <code>2,3</code> &nbsp;&nbsp;(This widget will display all of your categories except these categories). 
    </p> 
    <p><label for="<?php echo $this->get_field_id('exclude_t'); ?>"><?php _e('Exclude Categories With Childs :'); ?></label> 
     <input class="widefat" id="<?php echo $this->get_field_id('exclude_t'); ?>" name="<?php echo $this->get_field_name('exclude_t'); ?>" type="text" value="<?php echo $exclude_t; ?>" />  
     <br>Enter a comma seperated category ID.<br>ex : <code>1,4</code> &nbsp;&nbsp;(This widget will display all of your categories except these categories and its childs). 
    </p> 
    <p> 
     <label for="<?php echo $this->get_field_id('default_cat'); ?>"><?php _e('Default select category :'); ?></label> 
     <?php $cat_arg = array('hierarchical' => 1,'selected'=>$default_cat,'show_option_all'=>($default_select_text!='')?esc_attr($default_select_text):esc_attr($default_select_text),'echo'=>0,'id'=>$this->get_field_id('default_cat'),'name'=>$this->get_field_name('default_cat'),'exclude'=>$exclude,'class'=>'widefat'); 
      echo wp_dropdown_categories($cat_arg);?> 
    </p>  
    <p> 
     <input class="checkbox" type="checkbox" <?php checked($show_hierarchy); ?> id="<?php echo $this->get_field_id('show_hierarchy'); ?>" name="<?php echo $this->get_field_name('show_hierarchy'); ?>" /> 
     <label for="<?php echo $this->get_field_id('show_hierarchy'); ?>"><?php _e('Show hierarchy'); ?></label><br /> 
     <input type="checkbox" class="checkbox" id="<?php echo $this->get_field_id('count'); ?>" name="<?php echo $this->get_field_name('count'); ?>"<?php checked($count); ?> /> 
     <label for="<?php echo $this->get_field_id('count'); ?>"><?php _e('Show post counts'); ?></label><br /> 
    </p> 
    <?php 
    } 
} // class Category_Wise_Search 

// register Category_Wise_Search_Widget widget 
add_action('widgets_init', create_function('', 'register_widget("Category_Wise_Search_Widget");')); 
register_deactivation_hook(__FILE__, 'shambhu_plugin_deactivate'); 

function shambhu_plugin_deactivate() 
{ 
unregister_widget('Category_Wise_Search_Widget'); 
}