Add Entity Reference to Drupal 8 Form Field?

How can users add products to a simple plugin config using an autocomplete field?

I tried to use Config Entity but it looks the same as Form API (and I can't use entity fields there).

I was able to do this in Drupal 8 using the form API and the entity_autocomplete type.

$form['stories'] = [
'#type' => 'entity_autocomplete',
'#target_type' => 'node',
'#title' => $this->t('Stories'),
'#description' => $this->t('Select some stories.'),
'#default_value' => $default_entities,
'#tags' => TRUE,
'#selection_settings' => array(
'target_bundles' => array('page', 'article'),
),
'#weight' => '0',
];

Use [webform][1] - there is an entity reference field.
This won't be useable for your purpose .. but you can check the source for sake.


[1]:

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