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Callback function for 'meta_box_cb' argument inside register_taxonomy() that replaces the regular checkboxes with a plain dropdown list
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<?php | |
/** | |
* Callback function for taxonomy meta boxes | |
* | |
* A simple callback function for 'meta_box_cb' argument | |
* inside register_taxonomy() that replaces the regular | |
* checkboxes with a plain dropdown list | |
* | |
* @param [type] $post [description] | |
* @param [type] $box [description] | |
* @link http://wordpress.stackexchange.com/a/148965 | |
*/ | |
function dropdown_taxonomy_meta_box_callback( $post, $box ) { | |
$defaults = array( 'taxonomy' => 'category' ); | |
if ( ! isset( $box['args'] ) || ! is_array( $box['args'] ) ) { | |
$args = array(); | |
} | |
else { | |
$args = $box['args']; | |
} | |
extract( wp_parse_args($args, $defaults), EXTR_SKIP ); | |
$tax = get_taxonomy( $taxonomy ); | |
?> | |
<div id="taxonomy-<?php echo $taxonomy; ?>" class="categorydiv"> | |
<?php | |
$name = ( $taxonomy == 'category' ) ? 'post_category' : 'tax_input[' . $taxonomy . ']'; | |
echo "<input type='hidden' name='{$name}[]' value='0' />"; // Allows for an empty term set to be sent. 0 is an invalid Term ID and will be ignored by empty() checks. | |
$term_obj = wp_get_object_terms( $post->ID, $taxonomy ); //_log($term_obj[0]->term_id) | |
if ( ! empty( $term_obj ) ) { | |
wp_dropdown_categories( array( | |
'taxonomy' => $taxonomy, | |
'hide_empty' => 0, | |
'name' => "{$name}[]", | |
'selected' => $term_obj[0]->term_id, | |
'orderby' => 'name', | |
'hierarchical' => 0, | |
'show_option_none' => '—', | |
'class' => 'widefat' | |
) ); | |
} | |
?> | |
</div> | |
<?php | |
} | |
?> |
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