Here's a tip that only an information geek would care about. If you've ever looked at my taxonomies, you'll know that I describe nodes by facet, e.g. file format, person, subject. Years ago, in another version of Drupal, I used to show terms applied to each node by facet, but with the upgrades and changes to the taxonomy module, I gave up trying to keep that up to date. Luckily, I found in the PHP-Template documentation, that someone posted a snippet for sorting/displaying terms by vocabulary. So I'm using this snippet to display my terms by facet again.
Here's a screenshot of terms in action:
Like I said, that's the kind display of metadata that only a info geek would want. But I think it also demonstrates to people new to Drupal the kind of description/categorization of content that might be useful in different environments, e.g. a corporate intranet.
So to do this, use the following code in your node.tpl.php (snarfed from drupal.org):
<?php if ($terms): ?>
<?php /* sort taxonomy links by vocabulary 27 */
$terms27 = taxonomy_node_get_terms_by_vocabulary($node->nid, 27);
if ($terms27) {
print '<div class="terms">Forums: ';
foreach ($terms27 as $key => $term27) {
$lterm27 = l($term27->name, 'taxonomy/term/'.$term27->tid);
print $lterm27.' - ';
}
print '</div>';
}
?>
<?php endif; ?>You would repeat that code block sandwhiched between "if($terms) ... endif" for each set of facets you want to display.
Comments
03/22/06 @ 12:10
I just saw a site yesterday that implemented faceted browsing using separate vocabularies to filter nodes.
See this drupal forum post for some code, and the site is at http://knowledge.ilign.com/.
03/22/06 @ 12:23
I like that. It's a simple filtering implementatiion that's intuitive. Wouldn't work for facets on my site though because facets are actually vocabularies. Would work for filtering child terms, though. Will have to remember this for future client projects. Thanks, Boris!
03/22/06 @ 14:45
Err....yes, the facets ARE vocabularies. They have one vocabulary that is Business Alignment, Culture, etc., and then the second that is Implementation, Product Information, etc. and even a third for the target user.
03/22/06 @ 15:15
Oh I see. I should have read the Drupal forum entry more slowly. I couldn't tell if they were done as separate vocabularies. Very nice. I'll have to try that one out then in one of my sites.
03/22/06 @ 22:58
I sometimes use a method like the following to get a node's taxonomy, broken down by vocabulary, with one database query. I use this in hook_load() and later use the data in templates or wherever it is needed. I think core drupal should provide something like it:
function ocp_get_node_taxonomy($nid) {$tax = array();
$result = db_query("SELECT DISTINCT td.name AS term, v.name AS vocabulary FROM {term_node} tn LEFT JOIN {term_data} td ON td.tid=tn.tid LEFT JOIN {vocabulary} v ON v.vid = td.vid WHERE tn.nid=%d", $nid);
while ($row = db_fetch_object($result)) {
if (!$tax[$row->vocabulary])
$tax[$row->vocabulary] = array();
$tax[$row->vocabulary][] = $row->term;
}
return $tax;
}
03/24/06 @ 01:16
Yes, that's nice, Dave. And of course, I'd like to get things like free tagging vocabularies separately.
Can you give an example of the snippet you would use in your node.tpl.php to display this?
08/14/06 @ 17:16
I just wanted to thank you. That simple example of code at the beginning gave me the clue for a trouble I was having: Showing Authors and copyrights in a page by retrieving them from a hidden vocabulary (author: Name of term, Copyright text: Description). My own code is:
<?if ($terms) { // 1
$terms4 = taxonomy_node_get_terms_by_vocabulary($node->nid, 4);
if ($terms4) {
foreach ($terms4 as $key => $term4) {
$author = $term4->name;
$copyright = $term4->description;
}
if ((!$page == 0) || (!$author == "My own Name")) {
print '<div class="authory">';
print '© ' .$author;
print $copyright .'</div>';
}
}
}
?>
The authors' vocabulary id is 4 and I avoid using this in front page and my own pages. I post it just in case somebody would find it useful. Maybe it's laughible scavenged php, but for a newbie like me, it was a feat ;P
Thanks a lot again :)
02/13/07 @ 14:29
I cant get this to work anyone else having problems?
02/13/07 @ 15:16
Works for me. Do you have sample code?
02/14/07 @ 04:51
No I didn't have any trouble. Though I didn't use the code as presented. One way to tell where you are having trouble is just to print the output step by step. So you could use print_r($yourvar) and test to make sure each step is working properly. Use print_r if output is an array or object. print_r is my best friend when doing anything in drupal. Hope that helps if not you can hit me up in the irc channels, #drupal-dojo or #drupal-support, under mpare.
Peace!
Matthew Pare
06/05/07 @ 13:11
große Informationen, Dank.
08/10/07 @ 05:06
Great tip, thanks.
09/12/07 @ 18:06
Is the code working Gustavo?
12/03/07 @ 13:12
Good tips. Thank you.
01/03/08 @ 14:53
nice trick, thanks
01/04/08 @ 06:15
this nice one. thnx
01/20/08 @ 00:20
Great tip - keep them coming.