farm_livestock.install

<?php
/**
 * @file
 * Farm livestock install file.
 */

/**
 * Implements hook_update_dependencies().
 */
function farm_livestock_update_dependencies() {

  // Ensure that farm_update_7019 runs before farm_livestock_update_7001, so
  // that the new Parents field is available.
  $dependencies['farm_livestock'][7001] = array('farm' => 7019);

  // Update 7003 (add movement field to medical logs) depends on
  // farm_log_movement_update_7000().
  $dependencies['farm_livestock'][7003] = array('farm_log_movement' => 7000);

  return $dependencies;
}

/**
 * Migrate Animal Description field to plain Description field (from farm_fields).
 */
function farm_livestock_update_7000(&$sandbox) {

  // Revert this module's field_instance Features component.
  features_revert(array('farm_livestock' => array('field_instance')));

  // If the new description field database tables exist...
  if (db_table_exists('field_data_field_farm_description') && db_table_exists('field_revision_field_farm_description')) {

    // Copy all descriptions from the old database tables to the new ones.
    db_query('INSERT INTO {field_data_field_farm_description} SELECT * FROM {field_data_field_farm_animal_description}');
    db_query('INSERT INTO {field_revision_field_farm_description} SELECT * FROM {field_revision_field_farm_animal_description}');

    // Delete the old field.
    $field = field_info_instance('farm_asset', 'field_farm_animal_description', 'animal');
    field_delete_instance($field);
  }
}

/**
 * Migrate Animal Parents field to plain Parents field (from farm_asset_children).
 */
function farm_livestock_update_7001(&$sandbox) {

  // Revert this module's field_instance Features component.
  features_revert(array('farm_livestock' => array('field_instance')));

  // If the new description field database tables exist...
  if (db_table_exists('field_data_field_farm_parent') && db_table_exists('field_revision_field_farm_parent')) {

    // Copy all references from the old database tables to the new ones.
    db_query('INSERT INTO {field_data_field_farm_parent} SELECT * FROM {field_data_field_farm_animal_parents}');
    db_query('INSERT INTO {field_revision_field_farm_parent} SELECT * FROM {field_revision_field_farm_animal_parents}');

    // Delete the old field.
    $field = field_info_instance('farm_asset', 'field_farm_animal_parents', 'animal');
    field_delete_instance($field);
  }
}

/**
 * Add new animal ID tag types: Chip, Other.
 */
function farm_livestock_update_7002(&$sandbox) {
  features_revert(array('farm_livestock' => array('field_base', 'field_instance')));
}

/**
 * Add new movement field to medical logs.
 */
function farm_livestock_update_7003(&$sandbox) {
  features_revert(array('farm_livestock' => array('field_instance')));
}