user.install

<?php


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

/**
 * Implements hook_schema().
 */
function user_schema() {
    $schema['users_data'] = [
        'description' => 'Stores module data as key/value pairs per user.',
        'fields' => [
            'uid' => [
                'description' => 'The {users}.uid this record affects.',
                'type' => 'int',
                'unsigned' => TRUE,
                'not null' => TRUE,
                'default' => 0,
            ],
            'module' => [
                'description' => 'The name of the module declaring the variable.',
                'type' => 'varchar_ascii',
                'length' => DRUPAL_EXTENSION_NAME_MAX_LENGTH,
                'not null' => TRUE,
                'default' => '',
            ],
            'name' => [
                'description' => 'The identifier of the data.',
                'type' => 'varchar_ascii',
                'length' => 128,
                'not null' => TRUE,
                'default' => '',
            ],
            'value' => [
                'description' => 'The value.',
                'type' => 'blob',
                'not null' => FALSE,
                'size' => 'big',
            ],
            'serialized' => [
                'description' => 'Whether value is serialized.',
                'type' => 'int',
                'size' => 'tiny',
                'unsigned' => TRUE,
                'default' => 0,
            ],
        ],
        'primary key' => [
            'uid',
            'module',
            'name',
        ],
        'indexes' => [
            'module' => [
                'module',
            ],
            'name' => [
                'name',
            ],
        ],
        'foreign keys' => [
            'data_user' => [
                'table' => 'users',
                'columns' => [
                    'uid' => 'uid',
                ],
            ],
        ],
    ];
    return $schema;
}

/**
 * Implements hook_install().
 */
function user_install() {
    $storage = \Drupal::entityTypeManager()->getStorage('user');
    // Insert a row for the anonymous user.
    $storage->create([
        'uid' => 0,
        'status' => 0,
        'name' => '',
    ])
        ->save();
    // We need some placeholders here as name and mail are unique.
    // This will be changed by the settings form in the installer.
    $storage->create([
        'uid' => 1,
        'name' => 'placeholder-for-uid-1',
        'mail' => 'placeholder-for-uid-1',
        'status' => TRUE,
    ])
        ->save();
}

/**
 * Implements hook_requirements().
 */
function user_requirements($phase) : array {
    if ($phase !== 'runtime') {
        return [];
    }
    $result = (bool) \Drupal::entityQuery('user')->accessCheck(FALSE)
        ->condition('uid', 0)
        ->range(0, 1)
        ->execute();
    if ($result === FALSE) {
        return [
            'anonymous user' => [
                'title' => t('Anonymous user'),
                'description' => t('The anonymous user does not exist. See the <a href=":url">restore the anonymous (user ID 0) user record</a> for more information', [
                    ':url' => 'https://www.drupal.org/node/1029506',
                ]),
                'severity' => REQUIREMENT_WARNING,
            ],
        ];
    }
    return [];
}

/**
 * Implements hook_update_last_removed().
 */
function user_update_last_removed() {
    return 10000;
}