Drupal 8 custom form image field

//form build
$form['my_file'] = [
      '#type' => 'managed_file',
      '#title' => 'my file',
      '#name' => 'my_custom_file',
      '#description' => $this->t('my file description'),
      '#default_value' => [$config->get('my_file')],
      '#upload_location' => 'public://'
    ];

//form submit
$form_state->getValue('my_file')[0];

Source: drupal.stackexchange.com

Similar codes

1 vote340 views3 answers
Laravel override factory values in database seeder
PHP Laravel
5 votes300 views2 answers
Laravel vue
PHP
1 vote301 views3 answers
Firebase update realtime database
PHP
8 votes336 views1 answer
Laravel create symbolic link storage
PHP Laravel
3 votes395 views1 answer
Wordpress wp_head
PHP Wordpress
10 votes302 views2 answers
Get ip address of client php
PHP
4 votes365 views3 answers
Laravel return json header json
PHP Laravel
1 vote343 views2 answers
Laravel Cannot add foreign key constraint
PHP Laravel
0 vote322 views1 answer
How to create pdf with doompdf in php
PHP
0 vote338 views1 answer
Php check if file is video
PHP