Hi bedex78,
You can use this:
http://codex.wordpress.org/Template_Tags/wp_dropdown_categories
example:
<?php wp_dropdown_categories('show_option_none=Select category&show_count=1&orderby=name&echo=1&taxonomy=custom_taxonomy_name');
I don’t really like that one, though, because you are forced to use the taxonomy ID as the value, which, if you are using it for a jumpmenu, can make it difficult to work with custom taxonomy templates
I just wrote the function below which uses get_terms:
http://codex.wordpress.org/Function_Reference/get_terms
It uses the get_terms arguments (see codex link above) by passing them through the $args array.
Advantages:
– creates easy to use links to taxonomy templates
– you can add multiple taxonomies to the dropdown list
Disadvantages: I haven’t figgred out how to add ‘count’ yet, along with other parameters that wp_dropdown_categories offers.
<?php
function get_terms_dropdown($taxonomies, $args){
$myterms = get_terms($taxonomies, $args);
$output ="<select>";
foreach($myterms as $term){
$root_url = get_bloginfo('url');
$term_taxonomy=$term->taxonomy;
$term_slug=$term->slug;
$term_name =$term->name;
$link = $root_url.'/'.$term_taxonomy.'/'.$term_slug;
$output .="<option value='".$link."'>".$term_name."</option>";
}
$output .="</select>";
return $output;
}
$taxonomies = array('custom_taxonomy_name');
$args = array('orderby'=>'count','hide_empty'=>true);
echo get_terms_dropdown($taxonomies, $args);
?>
Hope this helps!
Okay, I tried the default code using the wp_dropdown_categories function. Problem is, though, that the links for my the custom taxonomies don’t work. The link structure is completly wrong.
The wp_dropdown_categories function returns links that look like:
bloginfo(url)/?cat=ID, but the links to the custom taxonomies look actually like bloginfo(url)/?custom_taxonomy_name=slug (I set the rewrite part in functions.php to false).
When I set ‘name’ => ‘custom_taxonomy_name’ for wp_dropdown_categories, at least it replaces the ‘?cat’ part with the correct ‘?custom_taxonomy_name’ part. But instead of the slug, it still uses the ID and that results in a link error then.
I don’t know if this some kind of permalink, rewrite rules or error of the drop-down code for the wp_dropdown_categories function.
I tried your code, earthmanweb, but while it returns the drop-down, nothing happens upon selecting a value.
Frustrating so far. So any hints are very welcome.
You can get term link with get_term_link() – first arg is term id, second taxonomy. So you can replace this:
$root_url = get_bloginfo('url');
$term_taxonomy=$term->taxonomy;
$term_slug=$term->slug;
$term_name =$term->name;
$link = $root_url.'/'.$term_taxonomy.'/'.$term_slug;
With
$link = get_term_link($term->term_id, $term->taxonomy);
But here’s how I did this:
<form action="<?php bloginfo('url'); ?>" method="get">
<div>
<?php
$taxonomies = array('TAXONOMY NAME');
$args = array('orderby'=>'name','hide_empty'=>true);
$select = get_terms_dropdown($taxonomies, $args);
$select = preg_replace("#<select([^>]*)>#", "<select$1 onchange='return this.form.submit()'>", $select);
echo $select;
?>
<noscript><div><input type="submit" value="Näytä" /></div></noscript>
</div></form>
Combine this with the get_terms_dropdown function described above, with couple of changes:
function get_terms_dropdown($taxonomies, $args){
$myterms = get_terms($taxonomies, $args);
$output ="<select name='TAXONOMY SLUG'>";
foreach($myterms as $term){
$root_url = get_bloginfo('url');
$term_taxonomy=$term->taxonomy;
$term_slug=$term->slug;
$term_name =$term->name;
$link = $term_slug;
$output .="<option value='".$link."'>".$term_name."</option>";
}
$output .="</select>";
return $output;
}
This isn’t the cleanest solution (and only works with one taxonomy at the time), but it does the trick. It uses a wrong url, but the rewrite should pass the user to the correct page.
Adding the term count is easy enough – it’s in $term->count, so just add that to the $output like this
$output .="<option value='".$link."'>".$term_name." (".$term->count.") </option>";
