J'utilise WordPress en tant que système de gestion de contenu (CMS) et j'aimerais que les catégories soient sélectionnables parmi plusieurs sélections: i.e <option>
.
Par exemple, le premier menu déroulant contient les catégories parentes. Ensuite, après la sélection du parent, une deuxième liste déroulante de sélection apparaît avec les catégories enfants. Il existe quelques plugins disponibles sur Wordpress.org mais ils semblent tous être cassés ou périmés. Toute aide serait appréciée.
Plugin brisé http://wordpress.org/extend/plugins/ajax-category-dropdown/
Le code que j'utilise sur wordpress.org
<form action="<?php bloginfo('url'); ?>/" method="get">
<?php
$select = wp_dropdown_categories('orderby=name&echo=0&depth=0&hierarchical=1&exclude=5,4');
$select = preg_replace("#<select([^>]*)>#", "<select$1 onchange='return this.form.submit()'>", $select);
echo $select;
?>
<noscript><input type="submit" value="View" /></noscript>
</form>
function parent_child_cat_select() { ?>
<script type="text/javascript">
/* <![CDATA[ */
jQuery(document).ready(function() {
jQuery('#parent_cat').change(function(){
var parentCat=jQuery('#parent_cat').val();
// call ajax
jQuery.ajax({
url:"/wp-admin/admin-ajax.php",
type:'POST',
data:'action=category_select_action&parent_cat_ID=' + parentCat,
success:function(results)
{
jQuery("#sub_cat_div").html(results);
}
});
});
});
/* ]]> */
</script>
<form action="<?php bloginfo('url'); ?>/" method="get">
<div id="parent_cat_div"><?php wp_dropdown_categories("show_option_none=Select parent category&orderby=name&depth=1&hierarchical=1&id=parent_cat"); ?></div>
<div id="sub_cat_div"><select name="sub_cat_disabled" id="sub_cat_disabled" disabled="disabled"><option>Select parent category first!</option></select></div>
<div id="submit_div"><input type="submit" value="View" /></div>
</form>
<?php }
function implement_ajax() {
$parent_cat_ID = $_POST['parent_cat_ID'];
if ( isset($parent_cat_ID) )
{
$has_children = get_categories("parent=$parent_cat_ID");
if ( $has_children ) {
wp_dropdown_categories("orderby=name&parent=$parent_cat_ID");
} else {
?><select name="sub_cat_disabled" id="sub_cat_disabled" disabled="disabled"><option>No child categories!</option></select><?php
}
die();
} // end if
}
add_action('wp_ajax_category_select_action', 'implement_ajax');
add_action('wp_ajax_nopriv_category_select_action', 'implement_ajax');//for users that are not logged in.
//this is optional, only if you are not already using jQuery
function load_jquery() {
wp_enqueue_script('jquery');
}
add_action('init', 'load_jquery');
Pour afficher les menus déroulants, utilisez la fonction parent_child_cat_select()
.
<?php parent_child_cat_select(); ?>
<form action="<?php echo remove_query_arg(array('mycat_go', 'cat')); ?>" method="get">
<?php
// get selected category and do some initializations
if (isset($_REQUEST['cat'])) $_REQUEST['mycat_go'] = $_REQUEST['cat'];
$selected = $_REQUEST['mycat_go'];
$selects = array();
$last = 0;
$top = false;
$i = 0;
// basically, we are looping from the selected up through the parents
// till we have no parent anymore.
while (!$top) {
// prep query to generate field containing all child categories
// of the selected one
$args = array(
'name' => 'mycat_'.$i,
'orderby' => 'name',
'echo' => 0,
'hierarchical' => 1,
'exclude' => '4,5',
'child_of' => $selected,
'depth' => 1,
'show_option_none' => '--select--',
'hide_if_empty' => true,
);
if(!empty($last)) $args['selected'] = $last;
// prepare next loop iteration or stop if we are displaying children of 0
if (!empty($selected)) {
$last = $selected;
$category = get_category($selected);
$selected = $category->parent;
} else {
$top = true;
}
// generate output and store in reversed order as we are going bottom up
$select = wp_dropdown_categories($args);
$select = preg_replace("#<option([^>]*)>#", "<option$1 onclick=\"this.parentNode.name = 'mycat_go';return this.form.submit()\">", $select);
array_unshift($selects, $select);
$i++;
}
// print to screen
foreach ($selects as $select) {
echo $select;
}
?>
</form>
<form action="<?php remove_query_arg(array('mycat_go', 'cat')); ?>" method="get">
<input type="hidden" name="cat" value="<?php echo $_REQUEST['mycat_go']; ?>" />
<input type="submit" value="Go there" />
</form>
Pourrait utiliser un peu de polissage, mais devrait fonctionner.