dkan_dataset.install

<?php

/**
 * @file
 * Install file for DKAN forms.
 */

/**
 * Implements hook_install().
 */
function dkan_dataset_install() {
  // Add some weight so other modules editing forms go first.
  db_update('system')
    ->fields(array(
      'weight' => 2,
    ))
    ->condition('type', 'module')
    ->condition('name', 'dkan_dataset')
    ->execute();

  _dkan_dataset_disable_og_extras_group_members_view();
}

/**
 * Disable the og_extras_members view.
 *
 * If we do not disable this view, there will be conflicts with the
 * dkan_og_extras_members view.
 */
function _dkan_dataset_disable_og_extras_group_members_view() {
  $views_status = variable_get('views_defaults', array());
  $views_status['og_extras_members'] = TRUE;
  variable_set('views_defaults', $views_status);

  if (function_exists('views_invalidate_cache')) {
    views_invalidate_cache();
  }
}

/**
 * Implements hook_update_N().
 */
function dkan_dataset_update_7001() {
  _dkan_dataset_disable_og_extras_group_members_view();
}

/**
 * Some fields were moved from Open Data Federal Extras module to
 * the DKAN Core so an update is needed in order to rename the fields
 * if they already exist on the DB.
 */
function dkan_dataset_update_7002() {
  // Rename fields.
  dkan_rename_field('field_odfe_is_part_of', 'field_is_part_of');
  dkan_rename_field('field_odfe_data_dictionary_type', 'field_data_dictionary_type');
  dkan_rename_field('field_odfe_landing_page', 'field_landing_page');
  dkan_rename_field('field_odfe_conforms_to', 'field_conforms_to');
  dkan_rename_field('field_odfe_rights', 'field_rights');
  dkan_rename_field('field_odfe_language', 'field_language');

  // Change callback function on 'field_language'.
  $field_language_base = field_info_field('field_language');
  $allowed_values_function = $field_language_base['settings']['allowed_values_function'];

  if ($allowed_values_function != 'dkan_dataset_content_types_allowed_language_values') {
    $field_language_base['settings']['allowed_values_function'] = 'dkan_dataset_content_types_allowed_language_values';
    field_update_field($field_language_base);
  }
}

/**
 * Migrate values from old 'field_odfe_category' field if present to the new
 * 'field_pod_theme'.
 *
 * @throws \DrupalUpdateException if the 'field_pod_theme' field is not part of the dataset content type.
 */
function dkan_dataset_update_7003() {

  // Check if the 'field_odfe_category' field exists.
  // If the field does not exist then no data needs to be migrated.
  $field_exists = field_info_instance('node', 'field_odfe_category', 'dataset');
  if (!$field_exists) {
    return TRUE;
  }

  // Check if the 'field_pod_theme' field exists.
  $field_exists = field_info_instance('node', 'field_pod_theme', 'dataset');
  if (!$field_exists) {
    throw new DrupalUpdateException("The 'field_pod_theme' does not exist. The update could not be applied.");
  }

  // Get all datasets that have some value on the 'field_odfe_category' field.
  $dataset_ids = db_select('field_data_field_odfe_category', 'odfec')
    ->fields('odfec', array('entity_id'))
    ->execute()
    ->fetchCol();
  $dataset_ids = array_unique($dataset_ids);

  // Process all datasets.
  foreach($dataset_ids as $dataset_id) {
    // Load dataset.
    $dataset = node_load($dataset_id);
    $dataset_wrapper = entity_metadata_wrapper('node', $dataset);
    // Get all values in 'field_odfe_category' field.
    $categories = $dataset_wrapper->field_odfe_category;
    foreach($categories as $category) {
      // Save each value on the new 'field_pod_theme' field.
      $dataset_wrapper->field_pod_theme[] = $category->value()->name;
    }
    // Save updated dataset.
    $dataset_wrapper->save();
  }

  // The data was migrated. Delete old field.
  field_delete_field('field_odfe_category');

  // Delete 'odfe_theme' vocabulary since it's not needed anymore.
  $vocabulary = taxonomy_vocabulary_machine_name_load('odfe_theme');
  taxonomy_vocabulary_delete($vocabulary->vid);
}