path: root/modules/node/node.admin.inc

<?php
// $Id$

/**
 * @file
 * Content administration and module settings UI.
 */

/**
 * Menu callback; presents general node configuration options.
 */
function node_configure() {
  // Only show rebuild button if there is 0 or more than 2 rows in node_access table,
  // or if there are modules that implement node_grant.
  if (db_result(db_query('SELECT COUNT(*) FROM {node_access}')) != 1 || count(module_implements('node_grants')) > 0) {
    $status = '<p>'. t('If the site is experiencing problems with permissions to content, you may have to rebuild the permissions cache. Possible causes for permission problems are disabling modules or configuration changes to permissions. Rebuilding will remove all privileges to posts, and replace them with permissions based on the current modules and settings.') .'</p>';
    $status .= '<p>'. t('Rebuilding may take some time if there is a lot of content or complex permission settings. After rebuilding has completed posts will automatically use the new permissions.') .'</p>';

    $form['access'] = array('#type' => 'fieldset', '#title' => t('Node access status'));
    $form['access']['status'] = array('#value' => $status);
    $form['access']['rebuild'] = array('#type' => 'submit', '#value' => t('Rebuild permissions'));
  }

  $form['default_nodes_main'] = array(
    '#type' => 'select', '#title' => t('Number of posts on main page'), '#default_value' => variable_get('default_nodes_main', 10),
    '#options' =>  drupal_map_assoc(array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30)),
    '#description' => t('The default maximum number of posts to display per page on overview pages such as the main page.')
  );
  $form['teaser_length'] = array(
    '#type' => 'select', '#title' => t('Length of trimmed posts'), '#default_value' => variable_get('teaser_length', 600),
    '#options' => array(0 => t('Unlimited'), 200 => t('200 characters'), 400 => t('400 characters'), 600 => t('600 characters'),
      800 => t('800 characters'), 1000 => t('1000 characters'), 1200 => t('1200 characters'), 1400 => t('1400 characters'),
      1600 => t('1600 characters'), 1800 => t('1800 characters'), 2000 => t('2000 characters')),
    '#description' => t("The maximum number of characters used in the trimmed version of a post. Drupal will use this setting to determine at which offset long posts should be trimmed. The trimmed version of a post is typically used as a teaser when displaying the post on the main page, in XML feeds, etc. To disable teasers, set to 'Unlimited'. Note that this setting will only affect new or updated content and will not affect existing teasers.")
  );

  $form['node_preview'] = array(
    '#type' => 'radios', '#title' => t('Preview post'), '#default_value' => variable_get('node_preview', 0),
    '#options' => array(t('Optional'), t('Required')), '#description' => t('Must users preview posts before submitting?')
  );

  $form['#validate'] = array('node_configure_validate');

  return system_settings_form($form);
}

/**
 * Form validate callback.
 */
function node_configure_validate($form, &$form_state) {
  if ($form_state['values']['op'] == t('Rebuild permissions')) {
    drupal_goto('admin/content/node-settings/rebuild');
  }
}

/**
 * Menu callback: confirm rebuilding of permissions.
 */
function node_configure_rebuild_confirm() {
  return confirm_form(array(), t('Are you sure you want to rebuild the permissions on site content?'),
                  'admin/content/node-settings', t('This action rebuilds all permissions on site content, and may be a lengthy process. This action cannot be undone.'), t('Rebuild permissions'), t('Cancel'));
}

/**
 * Handler for wipe confirmation
 */
function node_configure_rebuild_confirm_submit($form, &$form_state) {
  node_access_rebuild(TRUE);
  $form_state['redirect'] = 'admin/content/node-settings';
  return;
}

/**
 * Implementation of hook_node_operations().
 */
function node_node_operations() {
  $operations = array(
    'publish' => array(
      'label' => t('Publish'),
      'callback' => 'node_mass_update',
      'callback arguments' => array('updates' => array('status' => 1)),
    ),
    'unpublish' => array(
      'label' => t('Unpublish'),
      'callback' => 'node_mass_update',
      'callback arguments' => array('updates' => array('status' => 0)),
    ),
    'promote' => array(
      'label' => t('Promote to front page'),
      'callback' => 'node_mass_update',
      'callback arguments' => array('updates' => array('status' => 1, 'promote' => 1)),
    ),
    'demote' => array(
      'label' => t('Demote from front page'),
      'callback' => 'node_mass_update',
      'callback arguments' => array('updates' => array('promote' => 0)),
    ),
    'sticky' => array(
      'label' => t('Make sticky'),
      'callback' => 'node_mass_update',
      'callback arguments' => array('updates' => array('status' => 1, 'sticky' => 1)),
    ),
    'unsticky' => array(
      'label' => t('Remove stickiness'),
      'callback' => 'node_mass_update',
      'callback arguments' => array('updates' => array('sticky' => 0)),
    ),
    'delete' => array(
      'label' => t('Delete'),
      'callback' => NULL,
    ),
  );
  return $operations;
}

/**
 * List node administration filters that can be applied.
 */
function node_filters() {
  // Regular filters
  $filters['status'] = array('title' => t('status'),
    'options' => array('status-1'   => t('published'), 'status-0' => t('not published'),
                       'promote-1'  => t('promoted'),  'promote-0' => t('not promoted'),
                       'sticky-1'   => t('sticky'),    'sticky-0' => t('not sticky'))
  );
  // Include translation states if we have this module enabled
  if (module_exists('translation')) {
    $filters['status']['options'] += array('translate-0' => t('up to date translation'), 'translate-1' => t('outdated translation'));
  }

  $filters['type'] = array('title' => t('type'), 'options' => node_get_types('names'));

  // The taxonomy filter
  if ($taxonomy = module_invoke('taxonomy', 'form_all', 1)) {
    $filters['category'] = array('title' => t('category'), 'options' => $taxonomy);
  }
  // Language filter if there is a list of languages
  if ($languages = module_invoke('locale', 'language_list')) {
    $languages = array('' => t('Language neutral')) + $languages;
    $filters['language'] = array('title' => t('language'), 'options' => $languages);
  }
  return $filters;
}

/**
 * Build query for node administration filters based on session.
 */
function node_build_filter_query() {
  $filters = node_filters();

  // Build query
  $where = $args = array();
  $join = '';
  foreach ($_SESSION['node_overview_filter'] as $index => $filter) {
    list($key, $value) = $filter;
    switch ($key) {
      case 'status':
        // Note: no exploitable hole as $key/$value have already been checked when submitted
        list($key, $value) = explode('-', $value, 2);
        $where[] = 'n.'. $key .' = %d';
        break;
      case 'category':
        $table = "tn$index";
        $where[] = "$table.tid = %d";
        $join .= "INNER JOIN {term_node} $table ON n.nid = $table.nid ";
        break;
      case 'type':
        $where[] = "n.type = '%s'";
        break;
      case 'language':
        $where[] = "n.language = '%s'";
        break;
    }
    $args[] = $value;
  }
  $where = count($where) ? 'WHERE '. implode(' AND ', $where) : '';

  return array('where' => $where, 'join' => $join, 'args' => $args);
}

/**
 * Return form for node administration filters.
 */
function node_filter_form() {
  $session = &$_SESSION['node_overview_filter'];
  $session = is_array($session) ? $session : array();
  $filters = node_filters();

  $i = 0;
  $form['filters'] = array('#type' => 'fieldset',
    '#title' => t('Show only items where'),
    '#theme' => 'node_filters',
  );
  $form['#submit'][] = 'node_filter_form_submit';
  foreach ($session as $filter) {
    list($type, $value) = $filter;
    if ($type == 'category') {
      // Load term name from DB rather than search and parse options array.
      $value = module_invoke('taxonomy', 'get_term', $value);
      $value = $value->name;
    }
    else if ($type == 'language') {
      $value = empty($value) ? t('Language neutral') : module_invoke('locale', 'language_name', $value);
    }
    else {
      $value = $filters[$type]['options'][$value];
    }
    if ($i++) {
      $form['filters']['current'][] = array('#value' => t('<em>and</em> where <strong>%a</strong> is <strong>%b</strong>', array('%a' => $filters[$type]['title'], '%b' => $value)));
    }
    else {
      $form['filters']['current'][] = array('#value' => t('<strong>%a</strong> is <strong>%b</strong>', array('%a' => $filters[$type]['title'], '%b' => $value)));
    }
    if (in_array($type, array('type', 'language'))) {
      // Remove the option if it is already being filtered on.
      unset($filters[$type]);
    }
  }

  foreach ($filters as $key => $filter) {
    $names[$key] = $filter['title'];
    $form['filters']['status'][$key] = array('#type' => 'select', '#options' => $filter['options']);
  }

  $form['filters']['filter'] = array('#type' => 'radios', '#options' => $names, '#default_value' => 'status');
  $form['filters']['buttons']['submit'] = array('#type' => 'submit', '#value' => (count($session) ? t('Refine') : t('Filter')));
  if (count($session)) {
    $form['filters']['buttons']['undo'] = array('#type' => 'submit', '#value' => t('Undo'));
    $form['filters']['buttons']['reset'] = array('#type' => 'submit', '#value' => t('Reset'));
  }

  drupal_add_js('misc/form.js', 'core');

  return $form;
}

/**
 * Theme node administration filter form.
 */
function theme_node_filter_form($form) {
  $output = '';
  $output .= '<div id="node-admin-filter">';
  $output .= drupal_render($form['filters']);
  $output .= '</div>';
  $output .= drupal_render($form);
  return $output;
}

/**
 * Theme node administration filter selector.
 */
function theme_node_filters($form) {
  $output = '';
  $output .= '<ul class="clear-block">';
  if (!empty($form['current'])) {
    foreach (element_children($form['current']) as $key) {
      $output .= '<li>'. drupal_render($form['current'][$key]) .'</li>';
    }
  }

  $output .= '<li><dl class="multiselect">'. (!empty($form['current']) ? '<dt><em>'. t('and') .'</em> '. t('where') .'</dt>' : '') .'<dd class="a">';
  foreach (element_children($form['filter']) as $key) {
    $output .= drupal_render($form['filter'][$key]);
  }
  $output .= '</dd>';

  $output .= '<dt>'. t('is') .'</dt><dd class="b">';

  foreach (element_children($form['status']) as $key) {
    $output .= drupal_render($form['status'][$key]);
  }
  $output .= '</dd>';

  $output .= '</dl>';
  $output .= '<div class="container-inline" id="node-admin-buttons">'. drupal_render($form['buttons']) .'</div>';
  $output .= '</li></ul>';

  return $output;
}

/**
 * Process result from node administration filter form.
 */
function node_filter_form_submit($form, &$form_state) {
  $filters = node_filters();
  switch ($form_state['values']['op']) {
    case t('Filter'):
    case t('Refine'):
      if (isset($form_state['values']['filter'])) {
        $filter = $form_state['values']['filter'];

        // Flatten the options array to accommodate hierarchical/nested options.
        $flat_options = form_options_flatten($filters[$filter]['options']);

        if (isset($flat_options[$form_state['values'][$filter]])) {
          $_SESSION['node_overview_filter'][] = array($filter, $form_state['values'][$filter]);
        }
      }
      break;
    case t('Undo'):
      array_pop($_SESSION['node_overview_filter']);
      break;
    case t('Reset'):
      $_SESSION['node_overview_filter'] = array();
      break;
  }
}

/**
 * Submit the node administration update form.
 */
function node_admin_nodes_submit($form, &$form_state) {
  $operations = module_invoke_all('node_operations');
  $operation = $operations[$form_state['values']['operation']];
  // Filter out unchecked nodes
  $nodes = array_filter($form_state['values']['nodes']);
  if ($function = $operation['callback']) {
    // Add in callback arguments if present.
    if (isset($operation['callback arguments'])) {
      $args = array_merge(array($nodes), $operation['callback arguments']);
    }
    else {
      $args = array($nodes);
    }
    call_user_func_array($function, $args);

    cache_clear_all();
  }
  else {
    // We need to rebuild the form to go to a second step.  For example, to
    // show the confirmation form for the deletion of nodes.
    $form_state['rebuild'] = TRUE;
  }
}

function node_admin_nodes_validate($form, &$form_state) {
  $nodes = array_filter($form_state['values']['nodes']);
  if (count($nodes) == 0) {
    form_set_error('', t('No items selected.'));
  }
}

/**
 * Menu callback: content administration.
 */
function node_admin_content($form_state) {
  if (isset($form_state['values']['operation']) && $form_state['values']['operation'] == 'delete') {
    return node_multiple_delete_confirm($form_state, array_filter($form_state['values']['nodes']));
  }
  $form = node_filter_form();

  $form['admin']  = node_admin_nodes();

  return $form;
}

function node_admin_nodes() {

  $filter = node_build_filter_query();

  $result = pager_query(db_rewrite_sql('SELECT n.*, u.name FROM {node} n '. $filter['join'] .' INNER JOIN {users} u ON n.uid = u.uid '. $filter['where'] .' ORDER BY n.changed DESC'), 50, 0, NULL, $filter['args']);

  // Enable language column if locale is enabled or if we have any node with language
  $count = db_result(db_query("SELECT COUNT(*) FROM {node} n WHERE language != ''"));
  $multilanguage = (module_exists('locale') || $count);

  $form['options'] = array('#type' => 'fieldset',
    '#title' => t('Update options'),
    '#prefix' => '<div class="container-inline">',
    '#suffix' => '</div>',
  );
  $options = array();
  foreach (module_invoke_all('node_operations') as $operation => $array) {
    $options[$operation] = $array['label'];
  }
  $form['options']['operation'] = array('#type' => 'select', '#options' => $options,  '#default_value' => 'approve');
  $form['options']['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Update'),
    '#submit' => array('node_admin_nodes_submit'),
  );

  $destination = drupal_get_destination();
  $nodes = array();
  while ($node = db_fetch_object($result)) {
    $nodes[$node->nid] = '';
    $form['title'][$node->nid] = array('#value' => l($node->title, 'node/'. $node->nid) .' '. theme('mark', node_mark($node->nid, $node->changed)));
    $form['name'][$node->nid] =  array('#value' => node_get_types('name', $node));
    $form['username'][$node->nid] = array('#value' => theme('username', $node));
    $form['status'][$node->nid] =  array('#value' =>  ($node->status ? t('published') : t('not published')));
    if ($multilanguage) {
      $form['language'][$node->nid] = array('#value' => empty($node->language) ? t('Language neutral') : module_invoke('locale', 'language_name', $node->language));
    }
    $form['operations'][$node->nid] = array('#value' => l(t('edit'), 'node/'. $node->nid .'/edit', array('query' => $destination)));
  }
  $form['nodes'] = array('#type' => 'checkboxes', '#options' => $nodes);
  $form['pager'] = array('#value' => theme('pager', NULL, 50, 0));
  $form['#theme'] = 'node_admin_nodes';
  return $form;
}

/**
 * Theme node administration overview.
 */
function theme_node_admin_nodes($form) {
  // If there are rows in this form, then $form['title'] contains a list of
  // the title form elements.
  $has_posts = isset($form['title']) && is_array($form['title']);
  $select_header = $has_posts ? theme('table_select_header_cell') : '';
  $header = array($select_header, t('Title'), t('Type'), t('Author'), t('Status'));
  if (isset($form['language'])) {
    $header[] = t('Language');
  }
  $header[] = t('Operations');
  $output = '';

  $output .= drupal_render($form['options']);
  if ($has_posts) {
    foreach (element_children($form['title']) as $key) {
      $row = array();
      $row[] = drupal_render($form['nodes'][$key]);
      $row[] = drupal_render($form['title'][$key]);
      $row[] = drupal_render($form['name'][$key]);
      $row[] = drupal_render($form['username'][$key]);
      $row[] = drupal_render($form['status'][$key]);
      if (isset($form['language'])) {
        $row[] = drupal_render($form['language'][$key]);
      }
      $row[] = drupal_render($form['operations'][$key]);
      $rows[] = $row;
    }

  }
  else  {
    $rows[] = array(array('data' => t('No posts available.'), 'colspan' => '6'));
  }

  $output .= theme('table', $header, $rows);
  if ($form['pager']['#value']) {
    $output .= drupal_render($form['pager']);
  }

  $output .= drupal_render($form);

  return $output;
}

function node_multiple_delete_confirm(&$form_state, $nodes) {

  $form['nodes'] = array('#prefix' => '<ul>', '#suffix' => '</ul>', '#tree' => TRUE);
  // array_filter returns only elements with TRUE values
  foreach ($nodes as $nid => $value) {
    $title = db_result(db_query('SELECT title FROM {node} WHERE nid = %d', $nid));
    $form['nodes'][$nid] = array('#type' => 'hidden', '#value' => $nid, '#prefix' => '<li>', '#suffix' => check_plain($title) ."</li>\n");
  }
  $form['operation'] = array('#type' => 'hidden', '#value' => 'delete');
  $form['#submit'][] = 'node_multiple_delete_confirm_submit';
  return confirm_form($form,
                      t('Are you sure you want to delete these items?'),
                      'admin/content/node', t('This action cannot be undone.'),
                      t('Delete all'), t('Cancel'));
}

function node_multiple_delete_confirm_submit($form, &$form_state) {
  if ($form_state['values']['confirm']) {
    foreach ($form_state['values']['nodes'] as $nid => $value) {
      node_delete($nid);
    }
    drupal_set_message(t('The items have been deleted.'));
  }
  $form_state['redirect'] = 'admin/content/node';
  return;
}