nodeblock.module in Nodeblock 5

File

nodeblock.module

<?php

/**
 * Utility function to tell whether a type is enabled as a node block
 */
function nodeblock_type_enabled($type) {
  if (is_object($type)) {
    $type = $type->type;
  }
  return variable_get('nodeblock_' . $type, 0) ? TRUE : FALSE;
}

/**
 * Implementation of hook_form_alter().
 */
function nodeblock_form_alter($form_id, &$form) {

  // content type settings form
  if ($form_id == 'node_type_form' && isset($form['identity']['type'])) {
    $form['workflow']['nodeblock'] = array(
      '#type' => 'radios',
      '#title' => t('Available as block'),
      '#default_value' => variable_get('nodeblock_' . $form['#node_type']->type, 0),
      '#options' => array(
        0 => t('Disabled'),
        1 => t('Enabled'),
      ),
      '#description' => t('Should these nodes be made available as blocks?'),
    );
  }

  // node add/edit form
  if (isset($form['type'])) {
    $node = $form['#node'];

    // if enabled adjust the form
    if ($form_id == $form['type']['#value'] . '_node_form' && variable_get('nodeblock_' . $node->type, 0) && user_access('administer blocks')) {
      global $theme_key;
      $block = $node->nodeblock;

      // provided by nodeapi('prepare')
      $form['nodeblock'] = array(
        '#type' => 'fieldset',
        '#title' => t('Block Options'),
        '#tree' => true,
      );
      $block_regions = array(
        BLOCK_REGION_NONE => '<' . t('none') . '>',
      ) + system_region_list($theme_key);
      $form['nodeblock']['region'] = array(
        '#type' => 'select',
        '#title' => t('Region'),
        '#default_value' => $block['status'] ? isset($block['region']) ? $block['region'] : system_default_region($theme_key) : BLOCK_REGION_NONE,
        '#options' => $block_regions,
      );
      $form['nodeblock']['weight'] = array(
        '#type' => 'weight',
        '#title' => t('Weight'),
        '#default_value' => $block['weight'],
      );
    }
  }
}

/**
 * Implementation of hook_nodeapi().
 */
function nodeblock_nodeapi(&$node, $op, $teaser, $page) {

  // do nothing if not enabled
  if (!nodeblock_type_enabled($node)) {
    return;
  }
  switch ($op) {
    case 'prepare':

      // add nodeblock info to the node object in preparation for the form
      init_theme();
      global $theme_key;
      $node->nodeblock = db_fetch_array(db_query("SELECT * FROM {blocks} WHERE theme = '%s' AND module='%s' AND delta='%d'", $theme_key, 'nodeblock', $node->nid));
      break;
    case 'insert':
    case 'update':

      // only admins can affect block configuration
      if (user_access('administer blocks')) {
        init_theme();
        global $theme_key;

        // rehash blocks which will take care of inserting our new nodeblock into
        // the blocks table if necessary
        _block_rehash();

        // build block array and save
        $block = $node->nodeblock;
        $block['status'] = $block['region'] != BLOCK_REGION_NONE;
        $block['region'] = $block['status'] ? $block['region'] : '';
        $block['module'] = 'nodeblock';
        $block['delta'] = $node->nid;
        $block['theme'] = $theme_key;
        db_query("UPDATE {blocks} SET status = %d, weight = %d, region = '%s' WHERE module = '%s' AND delta = '%s' AND theme = '%s'", $block['status'], $block['weight'], $block['region'], $block['module'], $block['delta'], $block['theme']);
      }
      break;
    case 'delete':
      _block_rehash();
      break;
  }
}

/**
 * Implementation of hook_block().
 */
function nodeblock_block($op = 'list', $delta = 0, $edit = array()) {
  $types = node_get_types();
  if ($op == 'list') {
    foreach ($types as $type) {
      if (nodeblock_type_enabled($type)) {
        $result = db_query('SELECT * FROM {node} WHERE type="%s" AND status=1', $type->type);
        while ($node = db_fetch_object($result)) {
          $blocks[$node->nid] = array(
            'info' => $node->title . ' (nodeblock)',
          );
        }
      }
    }
    return $blocks;
  }
  elseif ($op == 'view') {
    $node = node_load($delta);
    $block['subject'] = check_plain($node->title);

    // using page arg = TRUE since we want the full content (generally speaking)
    $block['content'] = node_view($node, FALSE, FALSE, TRUE);
    return $block;
  }
}

/**
 * Implementation of hook_link().
 */
function nodeblock_link($type, $node = NULL, $teaser = FALSE) {
  $links = array();
  if ($type == 'node' && nodeblock_type_enabled($node)) {
    if (node_access('update', $node)) {
      $links['nodeblock_edit'] = array(
        'title' => t('Edit Block'),
        'href' => 'node/' . $node->nid . '/edit',
        'query' => drupal_get_destination(),
      );
    }
    if (user_access('administer blocks')) {
      $links['nodeblock_configure'] = array(
        'title' => t('Configure Block'),
        'href' => 'admin/build/block/configure/nodeblock/' . $node->nid,
        'query' => drupal_get_destination(),
      );
    }
  }
  return $links;
}

Functions

Name	Description
nodeblock_block	Implementation of hook_block().
nodeblock_form_alter	Implementation of hook_form_alter().
nodeblock_link	Implementation of hook_link().
nodeblock_nodeapi	Implementation of hook_nodeapi().
nodeblock_type_enabled	Utility function to tell whether a type is enabled as a node block