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http://erefredag.se/
http://www.ärdetfredag.se/
http://www.edefredag.nu/
http://www.ärdetfredag.nu/
http://isitfriday.biz/
http://isitfriday.org/
http://isitfridayyet.org/
http://isitfriday.in/sweden/
http://www.isitfriday.se/
http://isitfridayalready.com/
http://erdetfredag.no/

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<?php
class MyClass {
	function admin_init() {
		wp_register_style( 'my_css', get_stylesheet_directory_uri() . 
			'/css/my_class.css' );
		wp_register_script( 'my_js', get_stylesheet_directory_uri() . 
			'/js/my_class.js', 'jquery', '1.0.6', true );
	}
 
	function enqueue_css() {
		wp_enqueue_style( 'my_css' );
	}
 
	function enqueue_js() {
		wp_enqueue_script( 'my_js' );
 
		// Add current post id as a javascript variable.
		global $post;
		$current_id = empty( $post ) ? '' : $post->ID;
		$my_params = array(
		  'postid' => $current_id,
		);
		wp_localize_script( 'my_js', 'MyParams', $my_params );
	}
}
 
if ( class_exists( "MyClass" ) ) 
	$my_class = new MyClass();
else
	error_log( "MyClass missing" );
 
add_action( 'admin_init', array(&$my_class, 'admin_init') );
add_action( 'admin_print_styles-post.php', array(&$my_class, 'enqueue_css') );
add_action( 'admin_print_scripts-post.php', array(&$my_class, 'enqueue_js') );

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From wikipedia:

Post/Redirect/Get (PRG) is a web development design pattern that prevents 
some duplicate form submissions, creating a more intuitive interface for 
user agents (users). PRG implements bookmarks and the refresh button in a 
predictable way that does not create duplicate form submissions. 

image from wikipedia

PRG is the pattern to aim for when creating functionality for the WordPress backend (wp-admin). But it’s a pain to keep track of which hooks to use, how the redirection works and stuff like that.
Here’s a TextMate snippet that hopefully will be of some help.

Note: I will add nonce and update this post, just wanted to save the code somewhere when it was in front of me, you know how it is …

<?php 
function ${1:function_name}_page() {

    if ( isset( $POST['action'] ) && !current_user_can( '${2:edit_page}' ) ) {
        return;
    } ?>

    <form action="edit.php" method="post">
        <input type="hidden" name="page" value="${1/\_/-/}-page" />
        <input type="hidden" name="action" value="${3:action-name}" />
        <input type="submit" value="${4:Button Text}" />
    </form>
    <?php
}
function $1() {
    if ( isset(\$_POST['action']) && \$_POST['action'] == '$3') {
        // Do your magic here
        $0;

        \$location = admin_url() . "edit.php?page=" . $_POST['page'] . "&feedback=${5:Feedback+here}";

        \$status = 302;
        wp_redirect( \$location, \$status );
        exit;
    }
}
function add_$1_page() {
    add_management_page( '${6:Page Title}', '${7:Menu Title}', '${8:manage_options}', 
                  '${9:menu-slug}', '${1:function_name}_page' );
}

add_action( 'admin_init', '$1' );
add_action( 'admin_menu', 'add_$1_page' );

The post TextMate snippet for PRG-pattern in WordPress appeared first on Jonas Nordström.

  function delete_post_meta_for_all( $meta_key ) {  
     global $wpdb; 
     return $wpdb->query( 
        $wpdb->prepare( "DELETE FROM $wpdb->postmeta WHERE meta_key = %s ",
           $meta_key ) ); 
  } 

Tyvärr måste man fortfarande göra något liknande, men syntaxen är lite mer “WordPress”:

function delete_post_meta_for_all( $meta_key ) { 
   global $wpdb; 
   $result = $wpdb->delete( "$wpdb->postmeta" , 
      array( "meta_key" => $meta_key) , array( '%s' ) ); 
}

Syntax:

function delete( $table, $where, $where_format = null )
$table: table name
$where: A named array of WHERE clauses (in column => value pairs). Multiple clauses will be joined with ANDs. Both $where columns and $where values should be “raw”.
$where_format Optional: An array of formats to be mapped to each of the values in $where. If string, that format will be used for all of the items in $where. A format is one of ‘%d’, ‘%f’, ‘%s’ (integer, float, string). If omitted, all values in $where will be treated as strings unless otherwise specified in wpdb::$field_types.
return int|false The number of rows updated, or false on error.

Mer info här

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1. WordPress › WordPress 3.4 Release Candidate 3
   Nedräkningen till 3.4 har börjat. Inom en vecka borde den officiella releasen komma, såvida inte något allvarligt fel hittas förstås.
2. ★ Three Takeaways From Today’s WWDC Keynote
   “there was an unmistakeable “Fuck you, Google” undertone to the whole keynote”
3. Push rel=”author” through your head
4. De 10 bästa svenska filmerna!
   Med Emmas hjälp fyller jag på listan över filmer jag måste se.
5. Stop asking “But how will they make money?”
6. Otto on WordPress: Theme/Plugin Dependencies
7. THE BOG BLOG
   Funny shit
8. Gettext?
9. The Trello Tech Stack
10. I’ve Joined Automattic
    Konstantin Kovshenin, ny på Automattic. Väntat och välförtjänt.

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