This document summarizes a presentation on using taxonomy in Drupal. It discusses using taxonomy for photo galleries by allowing photos to be categorized and tagged without creating albums first. It also discusses using taxonomy to categorize all content types by adding terms through free tagging. Finally, it discusses contrib taxonomy modules like Taxonomy Manager and Content Taxonomy, and new features in Drupal 7 like taxonomy entities and fields.

2. presenters
Bart Feenstra | nederdev.com
Benjamin Melançon | agaric.com
Chach Sikes | chachaville.com
Matthias Hutterer | mh86
Benjamin Doherty | bangpound

3. What is taxonomy (bart)

4. What is taxonomy in Drupal 6?
"The taxonomy module allows you to categorize
your content using both tags and administrator
defined terms. It is a flexible tool for classifying
content with many advanced features."
People need to categorize, tag, sort, and
otherwise organize stuff.
Administrators need to set it up so that other
people who did not attend this session can also
categorize and tag.

5. Use cases of taxonomy

6. Taxonomy for Photo Gallery
Categorize your pictures into albums
No need to create the album first
Technique courtesy Dan Hakimzadeh
(Agaric) and whoever he stole it from.

7. Taxonomy for Photo Gallery, cont.
● Not necessary for this demonstration, but we have
three vocabularies here!

8. Taxonomy for Photo Gallery, cont.
You can create new photo albums on the fly, or select an existing one
from autocomplete dropdown.

9. Taxonomy for Photo Gallery, cont.

10. Taxonomy for Photo Gallery, cont.
anjaliforberpratt.com/photos/Beijing-Paralympic-Games
That links to the album
that the photo is in.
It gets a nice name
thanks to the View
Alias module,
drupal.org/project/
view_alias

11. Taxonomy for Photo Gallery, cont.
Clicking the photo brings one to the album, rather than the individual
photograph.

13. Taxonomy for Photo Gallery, cont.
The same view can be used to show photos from different vocabularies.
In addition to the event-based albums, you can instantly get category
(such as Outreach, shown here) or even keyword-based albums.

14. Taxonomy for Everything

15. Taxonomy for Everything, cont.
Most of the content types have corresponding vocabularies. In this
case, we create a web link and through the power of free tagging add
a new person to our categorization, which immediately will work for
faceted search and everywhere else we use taxonomy.

16. Taxonomy for Everything, cont.

17. Taxonomy for Everything, cont.

18. Taxonomy for Everything, cont.
data.agaric.com based on work and concept by Kathleen Murtagh.
E-mail ask@agaric.com for code or to be notified as it is released.

19. Flex Exposed Filter View with Taxonomy
Leadel.net example courtesy Linnovate.net.

32. Contrib Taxonomy Modules
• Top 10
– Tagadelic
– Taxonomy Menu
– Content Taxonomy
– Taxonomy Manager
– Feed Element Mapper
– Taxonomy Breadcrumb
– Menu Trails
– Taxonomy Image
– Taxonomy Access Control
– Taxonomy Access Control Lite

33. Taxonomy Manager
• Tool for managing large sets of terms

34. Taxonomy Manager - New
Features
• i18n support for multilingual vocabularies
– language selector
– translations

35. Taxonomy Manager - Double Tree

36. Term Edit
• provides links on taxonomy listing pages to
directly edit taxonomy terms

37. Content Taxonomy
• CCK field type for referencing taxonomy terms
• much more flexible than core taxonomy fields
• D7: Taxonomy Fields are in core!

38. Content Taxonomy - Widgets
• autocomplete
• select lists
• checkboxes / radio buttons
• taxonomy tree

39. Widgets
• Active Tags
• Multiselect

40. Hierarchical Select
• enhanced widget for letting the user select items
in a hierarchy

41. Taxonomy in Drupal 7

49. Taxonomy entities

50. * Implement hook_field_info().
*
* Field settings:
* - allowed_values: a list array of one or more vocabulary trees:
* - vid: a vocabulary ID.
* - parent: a term ID of a term whose children are allowed. This should be
* '0' if all terms in a vocabulary are allowed. The allowed values do not
* include the parent term.
*
*/
function taxonomy_field_info() {
return array(
'taxonomy_term' => array(
'label' => t('Taxonomy term'),
'description' => t('This field stores a reference to a taxonomy term.'),
'default_widget' => 'options_select',
'default_formatter' => 'taxonomy_term_link',
'settings' => array(
'allowed_values' => array(
array( Trees can be whole
'vid' => '0',
'parent' => '0', vocabularies or just
), pieces.
),
),
),
);
}

51. 7
Drupal 8 wish list
● hook_vocabulary_info
● Taxonomy UI administration specific for
vocabulary types (tags, controlled vocabularies,
webs of knowledge)
● Vocabulary index
● Full support for SKOS specification
● Vocabulary sharing, import/export