Nov. 25 2014 Austin WordPress Meetup presentation by Nick Batik on adding metadata to WordPress. Covers use of Types, Advanced Custom Fields, and PODS, as well as editing code. Part 2 of this presentation will be on displaying the data you enter, presented by Corey Ellis from 10up.

1. Understanding the Ins and
Outs of WordPress Metadata
Austin WordPress Meetup
Tuesday, Nov. 25, 2014
Presenter: Nick Batik
@nick_batik
http://HandsOnWP.com

2. What is Meta Data?

3. Metadata is "data about data".
There are two (metadata types):
• structural metadata, about the design and
specification of data structures or "data about the
containers of data";
• and descriptive metadata about individual instances
of application data or the data content.

4. Huh?

5. Let’s Look at Some
Examples
(It will make more sense)

6. Books
• Title
• Author
• Publisher
• Date of Publication
• Number of pages
• ISBN

7. Business Directory
• Name of business
• Description
• Address
• Phone
• Owner
• Hours of operation

8. Photography
• Resolution
• Exposure time
• F-stop
• Focal length
• Aperture
• Pixel dimensions

9. Event
• Location
• Date
• Performers
• Description
• Where to get tickets

10. Oh!
So meta data is information about the
book, business, photograph, and event!

11. Adding Metadata to
WordPress

12. Custom Post Types
The “container” for your metadata
Example:
• Books
• Photo Portfolio
• Business Directory
• Events

13. Custom Fields
The metadata for a Post Type
Example:
• Title
• Author
• Publisher
• Date of Publication
• Number of pages
• ISBN

14. Custom Taxonomies
Categories specific to a Post Type
Example, a “genre” taxonomy for a book:
• Science Fiction
• Drama
• Romance
• Mystery
• Western

15. Post Types can have
multiple taxonomies

16. “Books” could also have a taxonomy of “binding”:
• hard cover
• paperback

17. …and “Publisher”:
• Addison-Wesley
• Wiley
• Prentice Hall
• Bantam

18. Field Formats
Choosing how each field should be edited

19. Text Field
A single line of text

20. Text Area

21. WYSIWYG Text Area

22. True/False
Check for true, uncheck for false

23. Checkbox
Select as many as you want

24. Radio Button
Select only one from the list

25. Drop-down List

26. File or Image

27. Embed content
Such as videos, audio, slide
shows, etc.

28. Link to other pages

29. Color or Date Pickers

30. WordPress Metadata Plugins
• Advanced Custom Fields
https://wordpress.org/plugins/advanced-custom-fields/
• Types - Custom Fields and Custom Post Types
Management
https://wordpress.org/plugins/types/
• Pods - Custom Content Types and Fields
https://wordpress.org/plugins/pods/

31. Creating Custom Post Types
• Labels
• Icons
• Visibility
• Sections supported
• Roles & capabilities
• Menu position

32. Demo

33. add_action( 'init', 'codex_book_init' );
/**
* Register a book post type.
*
* @link http://codex.wordpress.org/Function_Reference/register_post_type
*/
function codex_book_init() {
Doing it with code
$labels = array(
'name' => 'Books',
'singular_name' =>’Book',
'menu_name' =>'Books',
'name_admin_bar' => 'Book',
'add_new' => 'Add New',
'add_new_item' => 'Add New Book',
'new_item' => 'New Book',
'edit_item' => 'Edit Book',
'view_item' => 'View Book',
'all_items' => 'All Books',
'search_items' ‘Search Books',
'parent_item_colon' => 'Parent Books:',
'not_found' => 'No books found.',
'not_found_in_trash' => No books found in Trash.'
);
$args = array(
'labels' => $labels,
'public' => true,
'publicly_queryable' => true,
'show_ui' => true,
'show_in_menu' => true,
'query_var' => true,
'rewrite' => array( 'slug' => 'book' ),
'capability_type' => 'post',
'has_archive' => true,
'hierarchical' => false,

34. $args = array(
'labels' => $labels,
'public' => true,
'publicly_queryable' => true,
'show_ui' => true,
'show_in_menu' => true,
'query_var' => true,
'rewrite' => array( 'slug' => 'book' ),
'capability_type' => 'post',
'has_archive' => true,
'hierarchical' => false,
'menu_position' => null,
'supports' => array( 'title', 'editor', 'author', 'thumbnail', 'excerpt', 'comments' )
);
register_post_type( 'book', $args );
}

35. Post Type Supports
Default: title and editor
• 'title'
• 'editor' (content)
• 'author'
• 'thumbnail' (featured image, current theme must also support post-thumbnails)
• 'excerpt'
• 'trackbacks'
• 'custom-fields'
• 'comments' (also will see comment count balloon on edit screen)
• 'revisions' (will store revisions)
• 'page-attributes' (menu order, hierarchical must be true to show Parent option)
• 'post-formats' add post formats, see Post Formats

36. Post Type Menu
Position
The position in the menu order the post type should appear. show_in_menu must be true.
Default: null - defaults to below Comments
• 5 - below Posts
• 10 - below Media
• 15 - below Links
• 20 - below Pages
• 25 - below comments
• 60 - below first separator
• 65 - below Plugins
• 70 - below Users
• 75 - below Tools
• 80 - below Settings
• 100 - below second separator

37. Demo
Creating a Custom Post Type with Types plugin

39. Demo
Creating a Custom Post Type with PODS

41. Demo
Adding Custom Fields to “Books” with Types

43. Demo
Adding Custom Meta to Events with PODS, Types, and
Advanced Custom Fields (ACF)

47. Demo
A quick demo of how to do this in code…