formexample install file

formexample.install

<?php

/**
 * @file
 * Install, update and uninstall functions for the formexample module.
 */

/**
 * Implements hook_install().
 *
 * Creates some default entries on this module custom table.
 *
 * @see hook_install()
 *
 * @ingroup formexample
 */
function formexample_install() {

  // Adding a default entry.
  $fields = [
    'name' => 'John',
    'surname' => 'Smith',
    'age' => 21,
  ];
  db_insert('formexample')
    ->fields($fields)
    ->execute();
}

/**
 * Implements hook_schema().
 *
 * Defines the database tables used by this module.
 *
 * @see hook_schema()
 *
 * @ingroup formexample
 */

function formexample_schema() {
  $schema['formexample'] = [
    'description' => 'Stores data for formexample module.',
    'fields' => [
      'pid' => [
        'type' => 'serial',
        'not null' => TRUE,
        'description' => 'Primary Key: Unique person ID.',
      ],
      'name' => [
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
        'description' => 'Name',
      ],
      'surname' => [
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'default' => '',
        'description' => 'Surname',
      ],
      'age' => [
        'type' => 'int',
        'not null' => TRUE,
        'default' => 0,
        'size' => 'tiny',
        'description' => 'Age',
      ],
    ],
    'primary key' => ['pid'],
    'indexes' => [
      'name' => ['name'],
      'surname' => ['surname'],
      'age' => ['age'],
    ],
  ];

  return $schema;
}