Why am I failing to programmatically create a webform in hook_entity_insert?

Question

I need to create a webform programmatically when a node is created. I refer and follow https://www.drupal.org/project/webform/issues/3038697

Here are the steps to reproduce:

1. Create new module via console, and install module.

2. In module.module add:

   use Drupal\Core\Entity\EntityInterface; 
   use Drupal\Core\Serialization\Yaml;
   use Drupal\webform\Entity\Webform;
   

   Add hook with webform create function:

   function module_entity_insert(EntityInterface $entity){
     // Build a render array of elements.
     $elements = [
       'name' => [
         '#type' => 'textfield',
         '#title' => t('Name'),
       ],
     ];
   
     $settings = [
       // Define settings.
     ];
   
     // Append default settings.
     $settings += Webform::getDefaultSettings();
   
     // Create a webform.
     $webform = Webform::create([
       'id' => 'custom_id',
       'title' => 'Title',
       'elements' => Yaml::encode($elements),
       'settings' => $settings,
     ]);
   
     $webform->save();
   }
   

3. Now, after save and cache clear, go to add new content (any type will do).

   Suppose I have new sample webform created along the new node creation, but here is the error message:

   The website encountered an unexpected error. Please try again later.Drupal\Core\Entity\EntityStorageException: Object support when dumping a YAML file has been disabled. in Drupal\Core\Entity\Sql\SqlContentEntityStorage->save() (line 847 of core/lib/Drupal/Core/Entity/Sql/SqlContentEntityStorage.php).

Drupal version is latest, fresh install. What am I doing wrong? Or what's missing?

Answer 1

I just ran into this error...just change t('Name') to 'Name' and it should work.

Apparently the translate function expands out to an object (instead of what you might expect...'Name' or 'Nombre'...etc): and dumping objects to yaml is apparently no longer "allowed".

Ex:

Drupal\Core\StringTranslation\TranslatableMarkup Object
(
    [translatedMarkup:protected] =>
    [options:protected] => Array
        (
        )

    [stringTranslation:protected] =>
    [string:protected] => Name
    [arguments:protected] => Array
        (
        )

)

Answer 2

The problem was at line:

'elements' => Yaml::encode($elements)

The solution is to replace the Yaml in the use statement:

from:

use Drupal\Component\Serialization\Yaml;

to:

use Symfony\Component\Yaml\Yaml;

I don't know the exact explanation, it just works on my code.