Errors when updating to latest alpha 4

OK, that error is occurring because of already installed viewsreference fields. I have added an update script which should alter all preinstalled fields to alpha5. My apologies, I added a script for the argument field when I added it but not for the title field.

I've run into a similar problem updating from alpha4 to alpha5, but this time with the "_title" column. The update script runs through a set list of field types, but in my site one of the fields was associated with entities from the paragraphs module which aren't in that list. I'm not familiar with the code in enough detail, but I don't think it's possible to know in advance all the possible entities that might incorporate a viewsreference field, is it? Perhaps the updates should run through and update all applicable fields? I've found the following alteration to the update code to work:

  $fieldManager = \Drupal::service('entity_field.manager');
  $entityManager = \Drupal::service('entity.manager');
  $entityTypeManager = \Drupal::service('entity_type.manager');

  $types = array_keys($entityManager->getAllBundleInfo());

  foreach ($types as $type) {
    $entity_type = $entityTypeManager->getDefinition($type);

   /* Omit entities that aren't fieldable. */
    if (!$entity_type->isSubclassOf(\Drupal\Core\Entity\FieldableEntityInterface::class)) {
       continue;
    }

/* Remainder of update method, iterating over type's bundles, is unchanged */

The quickest way to eliminate the problem is to delete the field and recreate. Once we move out of alpha releases then we will hopefully not do anything that will break anyone's current site. Thanks for the code update.

Ah, sorry about that. We need to consider all possible modifications required at this level before we close off alpha and move to beta.

This update needs to be reworked to update paragraphs, blocks and other fieldable entities. I have Column not found: 1054 Unknown column 'field_view_title' in 'field list': INSERT INTO {paragraph_revision__field_view}

When I've changed viewsreference_update_8101 to

$types = array(
    'node',
    'taxonomy_term',
    'user',
    'paragraph',
  );
  $fieldManager = \Drupal::service('entity_field.manager');
  $entityManager = \Drupal::service('entity.manager');
  foreach ($types as $type) {
    $bundles = $entityManager->getBundleInfo($type);
    foreach ($bundles as $bundle => $label) {
      $fields = $fieldManager->getFieldDefinitions($type, $bundle);
      foreach ($fields as $field) {
        if ($field->getType() == 'viewsreference') {
          $field_name = $field->getName();
          $definition = $field->getFieldStorageDefinition();
          $schema = $definition->getSchema();
          $id = $definition->id();
          $table = str_replace('.', '__', $id);
          if (!db_field_exists($table, $field_name . '_title')) {
            db_add_field($table, $field_name . '_title', $schema['columns']['title']);
          }

            $table = $type . '_revision__' . $field_name;
            if (!db_field_exists($table, $field_name . '_title')) {
              db_add_field($table, $field_name . '_title', $schema['columns']['title']);
            }

          }

      }
    }
  }

it works but Probably $types array should be dynamic.

Here is a patch that fixes it for the existing hook_update_N entries, though we may want to add an 8102 to solve this. Let me know.

@joekers

user & taxonomy terms were already handled in the existing code.