sharedcontent/sharedcontent.module at master · rolfvandekrol/sharedcontent · GitHub

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<?php

/**
 * Implementation of hook_form_FORM_ID_alter().
 */
function sharedcontent_form_node_type_form_alter(&$form, &$form_state) {
  $type = content_types($form['#node_type']->type);
  $fields = $type['fields'];

  $userreference_fields = array();
  foreach ($fields as $field => $info) {
    if ($info['type'] == 'userreference') {
      $userreference_fields[$field] = $info;
    }
  }

  $form['sharedcontent'] = array(
    '#type' => 'fieldset',
    '#title' => t('Shared Content'),
    '#collapsible' => TRUE,
    '#collapsed' => TRUE
  );

  if (!$userreference_fields) {
    $form['sharedcontent']['sharedcontent_na_message'] = array(
      '#type' => 'markup',
      '#value' => t('<p>Shared Content is not available for this node type yet. You first should add a User Reference field to this node type.</p>')
    );
  } else {
    $field_options = array('' => '- Select a field -');
    foreach ($userreference_fields as $field) {
      $field_options[$field['field_name']] = t('@label (@field)', array('@label' => $field['widget']['label'], '@field' => $field['field_name']));
    }

    $form['sharedcontent']['sharedcontent_field'] = array(
      '#type' => 'select',
      '#title' => t('Field'),
      '#options' => $field_options,
      '#default_value' => variable_get('sharedcontent_field_' . $form['#node_type']->type, ''),
    );
    $form['sharedcontent']['sharedcontent_operations'] = array(
      '#type' => 'checkboxes',
      '#title' => t('Operations'),
      '#options' => array('view' => t('View'), 'update' => t('Update'), 'delete' => t('Delete')),
      '#default_value' => variable_get('sharedcontent_operations_' . $form['#node_type']->type, array('view')),
    );
  }
}

/**
 * Implementation of hook_node_access_records().
 */
function sharedcontent_node_access_records($node) {
  $records = array();
  if ($field = variable_get('sharedcontent_field_' . $node->type, '')) {
    if (isset($node->$field) && is_array($node->$field) && $node->$field) {
      $operations = variable_get('sharedcontent_operations_' . $node->type, array('view'));
      foreach ($node->$field as $delta => $item) {
        if ($item['uid'] && intval($item['uid']) && intval($item['uid']) != $node->uid) {
          $records[] = array(
            'realm' => 'sharedcontent',
            'gid' => intval($item['uid']),
            'grant_view' => in_array('view', $operations), 'grant_update' => in_array('update', $operations), 'grant_delete' => in_array('delete', $operations)
          );
        }
      }

      if ($node->uid) {
        $account = user_load(array('uid' => $node->uid));
        $name = check_plain($type->type);
        $records[] = array(
          'realm' => 'sharedcontent',
          'gid' => $node->uid,
          'grant_view' => 1,
          'grant_update' => user_access('edit any ' . $name . 'content', $account) || user_access('edit own ' . $name . 'content', $account),
          'grant_delete' => user_access('delete any ' . $name . 'content', $account) || user_access('delete own ' . $name . 'content', $account),
        );
      }
    }

    if (!$records) {
      $records[] = array(
        'realm' => 'sharedcontent',
        'gid' => 0,
        'grant_view' => 1, 'grant_update' => 0, 'grant_delete' => 0
      );
    }
  }

  return $records;
}

/**
 * Implementation of hook_node_grants().
 */
function sharedcontent_node_grants($account, $op) {
  $grants = array();

  if ($account->uid > 0) {
    $grants['sharedcontent'] = array($account->uid);
  }

  return $grants;
}