islandora/islandora_basic_image/islandora_basic_image.install

<?php

/**
 * @file
 * This file contains all install related hooks.
 */

/**
 * Implements hook_install().
 */
function islandora_basic_image_install() {
  // Ensure the basic image node type is available.
  node_types_rebuild();

  $t = get_t();

  // Create medium size field.
  $medium_size_field = array(
    'field_name' => ISLANDORA_BASIC_IMAGE_MEDIUM_SIZE_FIELD,
    'type' => 'image',
  );
  field_create_field($medium_size_field);

  // Add fields instances to bundle.
  if (field_info_field(ISLANDORA_BASIC_IMAGE_MEDIUM_SIZE_FIELD)) {
    $medium_size_field_instance = array(
      'field_name' => ISLANDORA_BASIC_IMAGE_MEDIUM_SIZE_FIELD,
      'entity_type' => 'node',
      'bundle' => ISLANDORA_BASIC_IMAGE_CONTENT_TYPE,
      'label' => $t("Medium Size"),
      'description' => $t("A display copy of the image."),
      'required' => FALSE,
    );
    field_create_instance($medium_size_field_instance);
    drupal_set_message($t('Field %name was created successfully', array('%name' => ISLANDORA_BASIC_IMAGE_MEDIUM_SIZE_FIELD)));
  }

  if (field_info_field(ISLANDORA_TN_FIELD)) {
    $tn_field_instance = array(
      'field_name' => ISLANDORA_TN_FIELD,
      'entity_type' => 'node',
      'bundle' => ISLANDORA_BASIC_IMAGE_CONTENT_TYPE,
      'label' => $t("Thumbnail"),
      'description' => $t("A thumbnail for the Fedora resource"),
      'required' => FALSE,
    );
    field_create_instance($tn_field_instance);
    drupal_set_message($t('Field %name was created successfully', array('%name' => ISLANDORA_TN_FIELD)));
  }
}