Created
June 9, 2012 20:40
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A walker class to use that extends wp_dropdown_categories and allows it to use the term's slug as a value rather than ID
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<?php | |
/* | |
* A walker class to use that extends wp_dropdown_categories and allows it to use the term's slug as a value rather than ID. | |
* | |
* See http://core.trac.wordpress.org/ticket/13258 | |
* | |
* Usage, as normal: | |
* wp_dropdown_categories($args); | |
* | |
* But specify the custom walker class, and (optionally) a 'id' or 'slug' for the 'value' parameter: | |
* $args=array('walker'=> new SH_Walker_TaxonomyDropdown(), 'value'=>'slug', .... ); | |
* wp_dropdown_categories($args); | |
* | |
* If the 'value' parameter is not set it will use term ID for categories, and the term's slug for other taxonomies in the value attribute of the term's <option>. | |
*/ | |
class SH_Walker_TaxonomyDropdown extends Walker_CategoryDropdown{ | |
function start_el(&$output, $category, $depth, $args) { | |
$pad = str_repeat(' ', $depth * 3); | |
$cat_name = apply_filters('list_cats', $category->name, $category); | |
if( !isset($args['value']) ){ | |
$args['value'] = ( $category->taxonomy != 'category' ? 'slug' : 'id' ); | |
} | |
$value = ($args['value']=='slug' ? $category->slug : $category->term_id ); | |
$output .= "\t<option class=\"level-$depth\" value=\"".$value."\""; | |
if ( $value === (string) $args['selected'] ){ | |
$output .= ' selected="selected"'; | |
} | |
$output .= '>'; | |
$output .= $pad.$cat_name; | |
if ( $args['show_count'] ) | |
$output .= ' ('. $category->count .')'; | |
$output .= "</option>\n"; | |
} | |
} |
Thanks for this. Saved me a bunch of time and effort digging around and looking for the original walker and modifying it.
This is going to be included in one of my public plugins. "Media Categories".
https://github.com/eddiemoya/Media-Categories
thank for sharing!
Wonderful, saved my time. Than you for sharing the code.
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hchouhan: if you modify the function call to be
start_el( &$output, $category, $depth = 0, $args = array(), $id = 0 ) {
That will fix it. SH_Walker_TaxonomyDropdown has different arguments from what Walker_CategoryDropdown has defined, this will make them as the same. Note the defaults on '''$depth''', and '''$id'''