DRUPAL*DRUPAL

<?php
// $Id: taxonomy_weight.module,v 1.0 2008/01/24 0829 Exp $

/**
 * Implementation of hook_form_alter().
 */
function taxonomy_weight_form_alter($form_id, &$form) {
  switch ($form_id) {
    case 'taxonomy_form_vocabulary':
      $form['term_weight'] = array(
        '#type' => 'textfield',
        '#title' => t('Term weight range'),
        '#default_value' => _taxonomy_weight_get($form['vid']['#value']),
        '#description' => t('Input number of weights to have selectable. For example, it is 10, the weight selection box would display numbers from -10 to 10.'),
        '#size' => 6,
      );
      // Move submit buttons to bottom
      $form['submit']['#weight'] = 1;
      $form['delete']['#weight'] = 1;
      break;
   
    case 'taxonomy_form_term':
      $form['weight']['#delta'] = _taxonomy_weight_get($form['vid']['#value']);
      break;
  }
}

/**
 * Implementation of hook_taxonomy().
 */
function taxonomy_weight_taxonomy($op, $type, $object = NULL) {
  if ($type == 'vocabulary') {
    $table = '{taxonomy_weight}';
    $vid = $object['vid'];
    $weight = $object['term_weight'];
    if ($op == 'delete') {
      db_query("DELETE FROM $table WHERE vid = %d", $vid);
    }
    elseif ($op == 'update' && _taxonomy_weight_set($vid)) {
      db_query("UPDATE $table SET weight = %d WHERE vid = %d", $weight, $vid);
    }
    elseif ($op == 'update' || $op == 'insert') {
      db_query("INSERT INTO $table (vid, weight) VALUES (%d, %d)", $vid, $weight);
    }
  }
}

function _taxonomy_weight_set($vid) {
  $result = db_fetch_array(db_query("SELECT weight FROM {taxonomy_weight} WHERE vid = %d", $vid));
  return $result;
}

function _taxonomy_weight_get($vid) {
  $weight = 10;
  if ($row = _taxonomy_weight_set($vid)) {
    $weight = $row['weight'];
  }
  return $weight;
}