{"id":743,"date":"2008-02-25T22:51:38","date_gmt":"2008-02-25T20:51:38","guid":{"rendered":"http:\/\/planetozh.com\/blog\/2008\/02\/wordpress-snippet-add_meta_box\/"},"modified":"2008-02-25T22:51:38","modified_gmt":"2008-02-25T20:51:38","slug":"wordpress-snippet-add_meta_box","status":"publish","type":"post","link":"https:\/\/planetozh.com\/blog\/2008\/02\/wordpress-snippet-add_meta_box\/","title":{"rendered":"WordPress Snippet: add_meta_box()"},"content":{"rendered":"

To add custom content to the "Write" admin pages (where you write posts, pages or links), WordPress 2.5 introduces a new function set: add_meta_box()<\/p>\n

\"add_meta_box\"<\/p>\n

Simple plugin example :<\/p>\n

\n\n\t\t
\n\n\t\t
\n\t\t\t\t\t\t< View plain text<\/span> ><\/a>\n\t\t\t\t\t<\/div>\n\n\t\t
php<\/div>\n\n\t\t\n\t\t
\n\n\t<\/div>\n\t\n\t
\n\t\t
  1. <?php<\/span><\/div><\/li>\n
  2. \/*<\/span><\/div><\/li>\n
  3. Plugin Name: Example: Add Meta Box<\/span><\/div><\/li>\n
  4. Plugin URI: #<\/span><\/div><\/li>\n
  5. Description: Simple example showing how to add a "meta box" in WP 2.5<\/span><\/div><\/li>\n
  6. Version: 0.0<\/span><\/div><\/li>\n
  7. Author: Ozh<\/span><\/div><\/li>\n
  8. Author URI: http:\/\/planetozh.com\/blog\/<\/span><\/div><\/li>\n
  9. *\/<\/span><\/div><\/li>\n
  10.  <\/div><\/li>\n
  11. \/\/ This function tells WP to add a new "meta box"<\/span><\/div><\/li>\n
  12. function<\/span> add_some_box(<\/span>)<\/span> {<\/span><\/div><\/li>\n
  13.     add_meta_box(<\/span><\/div><\/li>\n
  14.         'ozh'<\/span>,<\/span> \/\/ id of the <div> we'll add<\/span><\/div><\/li>\n
  15.         'My Box'<\/span>,<\/span> \/\/title<\/span><\/div><\/li>\n
  16.         'add_something_in_the_box'<\/span>,<\/span> \/\/ callback function that will echo the box content<\/span><\/div><\/li>\n
  17.         'post'<\/span> \/\/ where to add the box: on "post", "page", or "link" page<\/span><\/div><\/li>\n
  18.     )<\/span>;<\/span><\/div><\/li>\n
  19. }<\/span><\/div><\/li>\n
  20.  <\/div><\/li>\n
  21. \/\/ This function echoes the content of our meta box<\/span><\/div><\/li>\n
  22. function<\/span> add_something_in_the_box(<\/span>)<\/span> {<\/span><\/div><\/li>\n
  23.     echo<\/span> "I'm living in a box"<\/span>;<\/span><\/div><\/li>\n
  24. }<\/span><\/div><\/li>\n
  25.  <\/div><\/li>\n
  26. \/\/ Hook things in, late enough so that add_meta_box() is defined<\/span><\/div><\/li>\n
  27. if<\/span> (<\/span>is_admin(<\/span>)<\/span>)<\/span><\/div><\/li>\n
  28.     add_action(<\/span>'admin_menu'<\/span>,<\/span> 'add_some_box'<\/span>)<\/span>;<\/span><\/div><\/li>\n
  29.  <\/div><\/li>\n
  30. ?><\/span><\/div><\/li>\n<\/ol>\t<\/div>\n\n<\/div>\n\n

    The catch here is to hook the function that add our "meta box" (here: add_some_box()) late enough so that the function it needs, add_meta_box(), has been defined. Hooking on 'admin_menu' is fine.<\/p>\n

    If you want something compatible with both WordPress 2.3 and 2.5, you will need something like the following:<\/p>\n

    \n\n\t\t
    \n\n\t\t
    \n\t\t\t\t\t\t< View plain text<\/span> ><\/a>\n\t\t\t\t\t<\/div>\n\n\t\t
    php<\/div>\n\n\t\t\n\t\t
    \n\n\t<\/div>\n\t\n\t
    \n\t\t
    1. if<\/span> (<\/span>function_exists<\/span>(<\/span>'add_meta_box'<\/span>)<\/span> {<\/span><\/div><\/li>\n
    2.     \/\/ 2.5 style<\/span><\/div><\/li>\n
    3. }<\/span> else<\/span> {<\/span><\/div><\/li>\n
    4.     \/\/ 2.3<\/span><\/div><\/li>\n
    5. }<\/span><\/div><\/li>\n<\/ol>\t<\/div>\n\n<\/div>\n\n","protected":false},"excerpt":{"rendered":"

      To add custom content to the "Write" admin pages (where you write posts, pages or links), WordPress 2.5 introduces a new function set: add_meta_box() Simple plugin example : < View plain text > php <?php \/* Plugin Name: Example: Add Meta Box Plugin URI: # Description: Simple example showing how to add a "meta box" […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21],"tags":[282,245,277],"class_list":["post-743","post","type-post","status-publish","format-standard","hentry","category-published","tag-add_meta_box","tag-wordpress","tag-wordpress-snippet"],"_links":{"self":[{"href":"https:\/\/planetozh.com\/blog\/wp-json\/wp\/v2\/posts\/743","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/planetozh.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/planetozh.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/planetozh.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/planetozh.com\/blog\/wp-json\/wp\/v2\/comments?post=743"}],"version-history":[{"count":0,"href":"https:\/\/planetozh.com\/blog\/wp-json\/wp\/v2\/posts\/743\/revisions"}],"wp:attachment":[{"href":"https:\/\/planetozh.com\/blog\/wp-json\/wp\/v2\/media?parent=743"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/planetozh.com\/blog\/wp-json\/wp\/v2\/categories?post=743"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/planetozh.com\/blog\/wp-json\/wp\/v2\/tags?post=743"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}