efq_example.install

<?php
/**
 * @file
 * Install file for efq_example
 */

/**
 * Implements hook_install().
 * Install all ctypes handled by this module.
 */
function efq_example_install() {
  // An array of content type machine names to install.
  $ctypes = efq_example_ctypes();
  efq_example_install_fields($ctypes);
  efq_example_place_example_block();
}

/**
 * Implements hook_uninstall().
 */
function efq_example_uninstall() {
  $ctypes = efq_example_ctypes();
  efq_example_uninstall_ctypes($ctypes);
}
/**
 * List of ctypes handled by this module;
 * this list should be complete for all ctypes handled by this module
 */
function efq_example_ctypes() {
  $ctypes = array(
    'efq_page',
    'efq_article',
    'efq_photo',
  );
  return $ctypes;
}

/**
 * Install fields for a given ctype
 *
 * @param array $ctypes
 *   an array of ctypes
 */
function efq_example_install_fields($ctypes, $module = 'efq_example') {
  // Make sure the system is aware of new ctypes.
  node_types_rebuild();
  foreach ($ctypes as $ctype) {
    module_load_include('inc', $module, "fields/${module}.fields." . $ctype);
    $fields_function = "${module}_${ctype}_fields";
    foreach ($fields_function() as $field) {
      // Create the field if it doesn't exist.
      if (!field_info_field($field['field_config']['field_name'])) {
        field_create_field($field['field_config']);
      }
        // Create the field instance if it doesn't exist.
      if (!field_info_instance('node', $field['field_instance']['field_name'], $ctype)) {
        field_create_instance($field['field_instance']);
      }
    }
  }
}

/**
 * Uninstall a set of ctypes
 * This is stolen shamelessly from Pro Drupal Development 7.
 *
 * @param array $ctypes
 *   an array of ctypes
 * @param string $module
 *   module whose types to uninstall
 */
function efq_example_uninstall_ctypes($ctypes, $module = 'efq_example') {
  foreach ($ctypes as $ctype) {
    // Gather nids of all nodes of this type.
    $nids = db_query("SELECT n.nid FROM {node} n WHERE n.type = :type", array(':type' => $ctype))->fetchCol();

    // Delete all nodes of this type.
    node_delete_multiple($nids);
    // Delete any fields defined by this module for this ctype;
    // this is tricky; we need to leave behind fields that are used elsewhere
    // relying on our convention of field_$ctype_* for ctype-specific
    // fields here; anything else is something like body or group_audience.
    module_load_include('inc', $module, "fields/${module}.fields." . $ctype);
    $fields_function = "${module}_${ctype}_fields";
    foreach ($fields_function() as $field) {
      if (preg_match("/^field_${ctype}/", $field['field_config']['field_name'])) {
        field_delete_field($field['field_config']['field_name']);
      }
    }
    // Delete any remaining instances associated with this ctype.
    $instances = field_info_instances('node', $ctype);
    foreach ($instances as $instance) {
      field_delete_instance($instance);
    }
    // Delete the ctype.
    node_type_delete($ctype);
    // Purge field info.
    field_purge_batch(1000);
  }
}

/**
 * example block
 */
function efq_example_place_example_block() {
  $values = array(
    array(
      'module' => 'efq_example',
      'delta' => 'content_by_state',
      'theme' => variable_get('theme_default', 'bartik'),
      'status' => 1,
      'weight' => 0,
      'region' => 'sidebar_first',
      'pages' => '',
      'cache' => -1,
    ),
  );
  $query = db_insert('block')->fields(array(
    'module', 'delta', 'theme',
    'status', 'weight', 'region',
    'pages', 'cache'));
  foreach ($values as $record) {
    $query->values($record);
  }
  $query->execute();
}