Walker_CategoryDropdown with optgroup

  • Resolved niska

    (@niska)


    12 years, 1 month ago

    I need to make a child class of Walker_CategoryDropdown to make it support <optgroup>. But I have no clue of how to achieve this. Any ideas?

    My goal is to get a result that looks like this:

    <select>
               <optgroup label="Alaskan/Hawaiian Time Zone">
                   <option value="AK">Alaska</option>
                   <option value="HI">Hawaii</option>
               </optgroup>
               <optgroup label="Pacific Time Zone">
                   <option value="CA">California</option>
                   <option value="NV">Nevada</option>
                   <option value="OR">Oregon</option>
                   <option value="WA">Washington</option>
               </optgroup>
               <optgroup label="Mountain Time Zone">
                   <option value="AZ">Arizona</option>
                   <option value="CO">Colorado</option>
                   <option value="ID">Idaho</option>
                   <option value="MT">Montana</option><option value="NE">Nebraska</option>
                   <option value="NM">New Mexico</option>
                   <option value="ND">North Dakota</option>
                   <option value="UT">Utah</option>
                   <option value="WY">Wyoming</option>
               </optgroup>
</select>
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  • Thread Starter niska

    (@niska)

    Solved:

    class Walker_CategoryDropdownCustom extends Walker_CategoryDropdown {
	function start_el(&$output, $category, $depth, $args) {
		global $wp_query;
		$cat_name = apply_filters('list_cats', $category->name, $category);

		if ($depth == 0) {
			$output .= "\t<optgroup class=\"level-$depth\" value=\"".$category->term_id."\"";
			$output .= ' label="'.$cat_name.'">';
		} else {
			$output .= "\t<option class=\"level-$depth\" value=\"".$category->term_id."\"";
			$output .= '>';
			$output .= $cat_name;
			$output .= "</option>\n";
		}
	}
	function end_lvl(&$output, $depth, $args) {
		$output .= "</optgroup>\n";
	}
}
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