UniqueFieldValidationRule.php in Field Validation 8

Namespace

Drupal\field_validation\Plugin\FieldValidationRule

File

src/Plugin/FieldValidationRule/UniqueFieldValidationRule.php

<?php

namespace Drupal\field_validation\Plugin\FieldValidationRule;

use Drupal\Core\Form\FormStateInterface;
use Drupal\field_validation\ConfigurableFieldValidationRuleBase;
use Drupal\field_validation\FieldValidationRuleSetInterface;

/**
 * UniqueFieldValidationRule.
 *
 * @FieldValidationRule(
 *   id = "unique_field_validation_rule",
 *   label = @Translation("Unique"),
 *   description = @Translation("Verifies that all values are unique in current entity or bundle.")
 * )
 */
class UniqueFieldValidationRule extends ConfigurableFieldValidationRuleBase {

  /**
   * {@inheritdoc}
   */
  public function addFieldValidationRule(FieldValidationRuleSetInterface $field_validation_rule_set) {
    return TRUE;
  }

  /**
   * {@inheritdoc}
   */
  public function getSummary() {
    $summary = parent::getSummary();
    return $summary;
  }

  /**
   * {@inheritdoc}
   */
  public function defaultConfiguration() {
    return [
      'scope' => NULL,
      'per_user' => FALSE,
    ];
  }

  /**
   * {@inheritdoc}
   */
  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
    $form['scope'] = [
      '#title' => $this
        ->t('Scope of unique'),
      '#description' => $this
        ->t('Specify the scope of unique values, support: entity, bundle.'),
      '#type' => 'select',
      '#options' => [
        'entity' => $this
          ->t('Entity'),
        'bundle' => $this
          ->t('Bundle'),
      ],
      '#default_value' => $this->configuration['scope'],
    ];
    $form['per_user'] = [
      '#title' => $this
        ->t('Per user'),
      '#type' => 'checkbox',
      '#default_value' => $this->configuration['per_user'] ?: FALSE,
    ];
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
    parent::submitConfigurationForm($form, $form_state);
    $this->configuration['scope'] = $form_state
      ->getValue('scope');
    $this->configuration['per_user'] = $form_state
      ->getValue('per_user');
  }
  public function validate($params) {
    $value = isset($params['value']) ? $params['value'] : '';
    $rule = isset($params['rule']) ? $params['rule'] : null;
    $context = isset($params['context']) ? $params['context'] : null;
    $items = isset($params['items']) ? $params['items'] : array();
    $delta = isset($params['delta']) ? $params['delta'] : '';
    $column = $rule
      ->getColumn();
    $settings = array();
    if (!empty($rule) && !empty($rule->configuration)) {
      $settings = $rule->configuration;
    }
    $flag = TRUE;
    $scope = isset($settings['scope']) ? $settings['scope'] : '';
    $per_user = $settings['per_user'] ?? FALSE;
    $count = 0;
    foreach ($items as $delta1 => $item1) {
      if ($delta != $delta1) {
        if ($value == $item1->{$column}) {
          $flag = FALSE;
          break;
        }
      }
    }
    if ($flag) {
      $entity = $items
        ->getEntity();
      $entity_type_id = $entity
        ->getEntityTypeId();
      $query = \Drupal::entityQuery($entity_type_id);
      $query
        ->addTag('field_validation');
      $query
        ->accessCheck(FALSE);
      if ($scope == 'bundle') {
        $bundle = $entity
          ->bundle();
        $bundle_key = $entity
          ->getEntityType()
          ->getKey('bundle');

        /*		
        	    $bundle_keys = [
          "node" => "type",
          "taxonomy_term" => "vid",
          "comment" => "comment_type",
          "block_content" => "type",
        ];
        */
        if (!empty($bundle_key)) {
          $query
            ->condition($bundle_key, $bundle);
        }
      }
      if ($per_user) {
        $query
          ->condition('uid', \Drupal::currentUser()
          ->id());
      }
      $id_key = $entity
        ->getEntityType()
        ->getKey('id');
      $query
        ->condition($id_key, (int) $items
        ->getEntity()
        ->id(), '<>');
      $field_name = $items
        ->getFieldDefinition()
        ->getName();
      if (!empty($column)) {
        $field_name = $field_name . '.' . $column;
      }
      $query
        ->condition($field_name, $value);
      $count = $query
        ->range(0, 1)
        ->count()
        ->execute();
      if ($count) {
        $flag = FALSE;
      }
    }
    if (!$flag) {
      $context
        ->addViolation($rule
        ->getErrorMessage());
    }

    //return true;
  }

}

Classes

Name	Description
UniqueFieldValidationRule	UniqueFieldValidationRule.