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   1  <?php
   2  
   3  /**
   4   * Implementation of hook_install().
   5   */
   6  function forum_install() {
   7    // Create tables.
   8    drupal_install_schema('forum');
   9    // Set the weight of the forum.module to 1 so it is loaded after the taxonomy.module.
  10    db_query("UPDATE {system} SET weight = 1 WHERE name = 'forum'");
  11  }
  12  
  13  function forum_enable() {
  14    if ($vocabulary = taxonomy_vocabulary_load(variable_get('forum_nav_vocabulary', 0))) {
  15      // Existing install. Add back forum node type, if the forums
  16      // vocabulary still exists. Keep all other node types intact there.
  17      $vocabulary = (array) $vocabulary;
  18      $vocabulary['nodes']['forum'] = 1;
  19      taxonomy_save_vocabulary($vocabulary);
  20    }
  21    else {
  22      // Create the forum vocabulary if it does not exist. Assign the vocabulary
  23      // a low weight so it will appear first in forum topic create and edit
  24      // forms.
  25      $vocabulary = array(
  26        'name' => t('Forums'),
  27        'multiple' => 0,
  28        'required' => 0,
  29        'hierarchy' => 1,
  30        'relations' => 0,
  31        'module' => 'forum',
  32        'weight' => -10,
  33        'nodes' => array('forum' => 1),
  34      );
  35      taxonomy_save_vocabulary($vocabulary);
  36  
  37      variable_set('forum_nav_vocabulary', $vocabulary['vid']);
  38    }
  39  }
  40  
  41  /**
  42   * Implementation of hook_uninstall().
  43   */
  44  function forum_uninstall() {
  45    // Load the dependent Taxonomy module, in case it has been disabled.
  46    drupal_load('module', 'taxonomy');
  47  
  48    // Delete the vocabulary.
  49    $vid = variable_get('forum_nav_vocabulary', '');
  50    taxonomy_del_vocabulary($vid);
  51  
  52    db_query('DROP TABLE {forum}');
  53    variable_del('forum_containers');
  54    variable_del('forum_nav_vocabulary');
  55    variable_del('forum_hot_topic');
  56    variable_del('forum_per_page');
  57    variable_del('forum_order');
  58    variable_del('forum_block_num_0');
  59    variable_del('forum_block_num_1');
  60  }
  61  
  62  /**
  63   * Implementation of hook_schema().
  64   */
  65  function forum_schema() {
  66    $schema['forum'] = array(
  67      'description' => 'Stores the relationship of nodes to forum terms.',
  68      'fields' => array(
  69        'nid' => array(
  70          'type' => 'int',
  71          'unsigned' => TRUE,
  72          'not null' => TRUE,
  73          'default' => 0,
  74          'description' => 'The {node}.nid of the node.',
  75        ),
  76        'vid' => array(
  77          'type' => 'int',
  78          'unsigned' => TRUE,
  79          'not null' => TRUE,
  80          'default' => 0,
  81          'description' => 'Primary Key: The {node}.vid of the node.',
  82        ),
  83        'tid' => array(
  84          'type' => 'int',
  85          'unsigned' => TRUE,
  86          'not null' => TRUE,
  87          'default' => 0,
  88          'description' => 'The {term_data}.tid of the forum term assigned to the node.',
  89        ),
  90      ),
  91      'indexes' => array(
  92        'nid' => array('nid'),
  93        'tid' => array('tid')
  94      ),
  95      'primary key' => array('vid'),
  96    );
  97  
  98    return $schema;
  99  }
 100  
 101  /**
 102   * Create the forum vocabulary if does not exist. Assign the
 103   * vocabulary a low weight so it will appear first in forum topic
 104   * create and edit forms.  Do not just call forum_enable() because in
 105   * future versions it might do something different.
 106   */
 107  function forum_update_6000() {
 108    $ret = array();
 109  
 110    $vid = variable_get('forum_nav_vocabulary', 0);
 111    $vocabularies = taxonomy_get_vocabularies();
 112    if (!isset($vocabularies[$vid])) {
 113      $vocabulary = array(
 114        'name' => t('Forums'),
 115        'multiple' => 0,
 116        'required' => 0,
 117        'hierarchy' => 1,
 118        'relations' => 0,
 119        'module' => 'forum',
 120        'weight' => -10,
 121        'nodes' => array('forum' => 1),
 122      );
 123      taxonomy_save_vocabulary($vocabulary);
 124  
 125      variable_set('forum_nav_vocabulary', $vocabulary['vid']);
 126    }
 127  
 128    return $ret;
 129  }