Trying to get subcategory of current category

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I am trying to get subcategory of current category using wp_dropdown_categories .

onclick of category, i want to get subcategory. I did try using get_categories function with arguments but it’s not giving me subcategories. While using has_children is giving me blank array.

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This is my code: 

add_action( 'wp_ajax_wp_get_subcategory', 'wp_get_subcategory' );

function wp_get_subcategory() {
    $parent_cat_ID = $_POST['selected_category'];

    $args = array(
     'child_of' => $parent_cat_ID,
     'taxonomy' => 'download_category',
     'hide_empty' => 0,
     'hierarchical' => false,
     'depth'  => 1,
     'parent' => $parent_cat_ID
    );

    if ( isset($parent_cat_ID) ) {
        $has_children = get_categories($args);

        if ( $has_children ) {

            //wp_dropdown_categories($args);
            foreach ($has_children as $category) {

                $option = '<option value="'.$category->cat_ID.'">';
                $option .= $category->cat_name;
                echo $option .= '</option>';

            }
        } else {
            ?><select name="sub_cat_disabled" id="sub_cat_disabled" disabled="disabled"><option>No child categories!</option></select><?php
        }
        die();    
    }
}
Post Views: 2

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2 comments

  1. That’s best if you are getting categories now, as far as your older code looks there is one minor mistake that’s why your categories are not showing properly. Just change your 

    'hierarchical' => false,

    to 

    'hierarchical' => true,

    and so, your categories will be showing up nicely.

  2. Try this two example i have take this from some reference website. I hope this may useful to you

    1. List subcategories if viewing a Category, and brothers / sibling
      categories if in subcategory.

      <?php

 if (is_category()) {
 $this_category = get_category($cat);
}
?>

<?php
 if($this_category->category_parent)
  $this_category = wp_list_categories('orderby=id&show_count=0
  &title_li=&use_desc_for_title=1&child_of='.$this_category->category_parent."&echo=0"); 
  else $this_category = wp_list_categories('orderby=id&depth=1&show_count=0
  &title_li=&use_desc_for_title=1&child_of='.$this_category->cat_ID.     "&echo=0");
  if ($this_category) { ?> 

  <ul>
  <?php echo $this_category; ?>
   </ul>
    <?php } ?>

    2. Suppose the category whose subcategories you want to show is category 10, and that its category “nicename” is “archives”.

      <select name="event-dropdown"> 
<option value=""><?php echo esc_attr_e( 'Select Event', 'textdomain' ); ?></option> 
 <?php 
 $categories = get_categories( array( 'child_of' => 10 ); 
 foreach ( $categories as $category ) {
 printf( '<option value="%1$s">%2$s (%3$s)</option>',
    esc_attr( '/category/archives/' . $category->category_nicename ),
    esc_html( $category->cat_name ),
    esc_html( $category->category_count )
   );
 }
?>
</select>

    For Reference: click me

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