currency-8.x-3.3/modules/currency_test/currency_test.install

<?php

/**
 * @file
 * Installation and uninstallation functionality.
 */

/**
 * Implements hook_schema().
 */
function currency_test_schema() {
  $schema['currency_test'] = [
    'fields' => [
      'currency_code' => [
        'type' => 'varchar',
        'length' => '3',
      ],
    ],
  ];
  $fields = [
    'amount_currency_code_field_option',
    'amount_currency_code_definition',
    'amount_currency_code_field_definition',
    'amount_currency_code_field_table_definition',
    'amount_currency_undefined',
  ];
  foreach ($fields as $field) {
    $schema['currency_test']['fields'][$field] = [
      'type' => 'varchar',
      'length' => 255,
    ];
  }

  return $schema;
}

/**
 * Implements hook_install().
 */
function currency_test_install() {
  $currency_codes = ['EUR', 'NLG', 'USD', ''];
  $amounts = [
    'amount_currency_code_definition' => 123.456,
    'amount_currency_code_field_definition' => 123.456,
    'amount_currency_code_field_table_definition' => 123.456,
    'amount_currency_undefined' => 123.456,
  ];
  foreach ($currency_codes as $currency_code) {
    \Drupal::database()->insert('currency_test')
      ->fields([
        'currency_code' => $currency_code,
      ] + $amounts)
      ->execute();
  }
}