Extension:WordpressTeaser

MediaWiki extensions manual

File:OOjs UI icon advanced-invert.svg WordpressTeaser Release status: unmaintained
Implementation	Tag
Description	This extension allows you to insert teaser (first paragraphs) from your Wordpress blog into a MediaWiki page.
Author(s)	Claus van Beek (ClausVB~mediawikiwikitalk)
Latest version	0.9 (2009-11-20)
MediaWiki
License	GPL (latest version)
Download	#Code
Quarterly downloads
Public wikis using

Detailed description

This extension allows you to insert teaser (first paragraphs) from your Wordpress blog into a MediaWiki page. PHP5 and "mysqli" (see MySQL improved extension) are required. Work in progress ...

Installation

Afterwards continue with your MySQL settings.

MySQL and other settings

Your Wordpress installation should contain a file like

wp-config.php

with all your MySQL settings. Please copy your values to "wordpress.php".

// MySQL settings
define('WORDPRESS_HOST', 'localhost');
define('WORDPRESS_USER', 'mysql_user');
define('WORDPRESS_PASSWORD', 'mysql_password');
define('WORDPRESS_DATABASE', 'wordpress_mysql_database');
define('WORDPRESS_PREFIX', 'wordpress_');

Get help

First of all you can use

<wordpress>help</wordpress>

to get help. This will display all albums and all pictures, which are stored in your Wordpress database.

If you have further questions, please post them here (discussion).

Usage

To get help and general informations about your wordpress, please use

<wordpress>help</wordpress>

Work in progress ...

Code

I tried to comment my code. If you have any questions or need more comments on a special line, please let me know.

<?php

// MySQL settings
define('WORDPRESS_HOST', 'localhost');
define('WORDPRESS_USER', 'mysql_user');
define('WORDPRESS_PASSWORD', 'mysql_password');
define('WORDPRESS_DATABASE', 'wordpress_mysql_database');
define('WORDPRESS_PREFIX', 'wordpress_');

// Other settings
define('WORDPRESS_URI', 'http://your-domain.tld/wordpress/'); // trailing "/" is IMPORTANT
define('STRFTIME_LC_ALL', 'german');
define('STRFTIME_SETTINGS', '%A, %d. %B %Y (%H:%M:%S)'); // '%A, %B %d, %Y (%H:%M:%S)'


$wgExtensionFunctions[] = 'wordpress';

function wordpress()
{
  global $wgParser;
  $wgParser->setHook('wordpress', 'process_wordpress');
}

function process_wordpress($input, $args, $parser)
{
  $db = new mysqli(WORDPRESS_HOST, WORDPRESS_USER, WORDPRESS_PASSWORD, WORDPRESS_DATABASE);

  // If MySQL cannot be connected, do nothing and exit function
  if (mysqli_connect_errno())
  {
    return '<h2>MySQL settings are wrong</h2> <p><strong>Error: "' . mysqli_connect_error() . '"</strong>. Please open</p> <pre>' .  __FILE__ . '</pre> <p>and check WORDPRESS_HOST, WORDPRESS_USER, WORDPRESS_PASSWORD, WORDPRESS_DATABASE and WORDPRESS_PREFIX, please.</p>';
  }

  // SET all encodings from an to RDBMS to UTF-8
  $db->query('SET character_set_results = utf8');
  $db->query('SET character_set_client = utf8');

  setlocale(LC_ALL, STRFTIME_LC_ALL);

  /**
   * help, e.g. <wordpress>help</wordpress>
  **/
  if ($input == 'help')
  {
    // Select basic stats
    $select_stats = 'SELECT COUNT(*) AS how_many_posts, SUM(comment_count) AS sum_of_all_comments FROM ' . WORDPRESS_PREFIX . 'posts WHERE post_status = "publish"';
    $result_stats = $db->query($select_stats)
      or die('ERROR MySQL: ' . $db->error . '<pre>' . $select_stats . '</pre>');
    $row_stats = $result_stats->fetch_assoc();

    // Select date of last post and last comment
    $select_last_date = 'SELECT MAX(post_date) AS last_post_date, MAX(comment_date) AS last_comment_date FROM ' . WORDPRESS_PREFIX . 'posts, ' . WORDPRESS_PREFIX . 'comments WHERE post_status = "publish" AND comment_approved = 1';
    $result_last_date = $db->query($select_last_date)
      or die('ERROR MySQL: ' . $db->error . '<pre>' . $select_last_date . '</pre>');
    $row_last_date = $result_last_date->fetch_assoc();

    // Select wordpress settings
    $select_settings = 'SELECT option_value FROM ' . WORDPRESS_PREFIX . 'options
      WHERE option_name = "home" OR option_name = "permalink_structure"';
    $result_settings = $db->query($select_settings)
      or die('ERROR MySQL: ' . $db->error . '<pre>' . $select_settings . '</pre>');
    $row_settings = $result_settings->fetch_assoc();
    $wordpress_home = $row_settings['option_value'] . '/';
    $row_settings = $result_settings->fetch_assoc();
    $wordpress_permalink_structure = $row_settings['option_value'];

    // Introduction and help text
    $output = '<h2>&lt;wordpress&gt;help&lt;/wordpress&gt;</h2> <p>This help will try to teach a few basics about this extension. WordPress stores data in a MySQL database. To access this data you will have to provide a few things like user and password. Take a look at</p> <pre>' . __FILE__ . '</pre> <p>and change it to your needs.</p> <h2>Your WordPress statistics and settings</h2>';

    $output .= '<ul>' . "\n";
    $output .= '  <li><strong>Sum of all posts</strong>: ' . $row_stats['how_many_posts'] . '</li>' . "\n";
    $output .= '  <li><strong>Sum of all comments</strong>: ' . $row_stats['sum_of_all_comments'] . '</li>' . "\n";
    $output .= '  <li><strong>Last post</strong>: '
      . strftime(STRFTIME_SETTINGS, strtotime($row_last_date['last_post_date']))
      . '</li>' . "\n";
    $output .= '  <li><strong>Last comment</strong>: '
      . strftime(STRFTIME_SETTINGS, strtotime($row_last_date['last_comment_date']))
      . '</li>' . "\n";
      $output .= '  <li><strong>Settings "home"</strong>: ' . $wordpress_home . '</li>' . "\n";
    $output .= '  <li><strong>Settings "permalink_structure"</strong>: ' . $wordpress_permalink_structure . '</li>' . "\n";
    $output .= '</ul>' . "\n";

    if (WORDPRESS_URI == $wordpress_home)
    {
      $check_uri_text = 'Constat &quot;WORDPRESS_URI&quot; is equal to &quot;$wordpress_home&quot;';
      $color = 'green';
    }
    else
    {
      $check_uri_text = 'Constat &quot;WORDPRESS_URI&quot; is NOT equal to &quot;$wordpress_home&quot;';
      $color = 'red';
    }

    $output .= '<p style="color: ' . $color . '">' . $check_uri_text . '</p>' . "\n";

    return $output;
  }
  else
  {
    // Select date of last post and last comment
    $select_posts = 'SELECT post_name, post_title, LEFT(post_content, 500) AS content, post_date, comment_count
      FROM ' . WORDPRESS_PREFIX . 'posts WHERE post_status = "publish" and ID != 2
      ORDER BY post_date DESC';
    $result_posts = $db->query($select_posts)
      or die('ERROR MySQL: ' . $db->error . '<pre>' . $select_posts . '</pre>');

    while ($row_posts = $result_posts->fetch_assoc())
    {
      $comments = ($row_posts['comment_count'] == 0)
        ? 'Kommentare: 0'
        : '<a href="' . WORDPRESS_URI . $row_posts['post_name'] . '.htm#comments" target="_blank">Kommentare: ' . $row_posts['comment_count'] . '</a>';

      $date_and_time = strftime(STRFTIME_SETTINGS, strtotime($row_posts['post_date']));

      $output .= '<fieldset>' . "\n";
      $output .= '<legend>' . $row_posts['post_title'] . '</legend>' . "\n";
      $output .= $row_posts['content'] . "\n";
      $output .= '<p style="font-size: 90%;">erstellt am ' . $date_and_time . ' &nbsp;&middot;&nbsp; <a href="' . WORDPRESS_URI . $row_posts['post_name'] . '.htm" target="_blank">Zum Blog</a> &nbsp;&middot;&nbsp; ' . $comments . '</p>' . "\n";
      $output .= '</fieldset>' . "\n";
    }

    return $output;
  }

  $db->close();
}

?>

Screenshots

Work in progress ...