Adds the Slugify service.

cdesai_tff.services.yml

@@ -0,0 +1,7 @@
+# Register our services
+services:
+  cdesai_tff.slugify:
+    class: Drupal\cdesai_tff\Service\SlugifyService
+    arguments: []
+    tags:
+      - { name: cdesai_tff }

src/Service/SlugifyService.php

@@ -0,0 +1,37 @@
+<?php
+
+namespace Drupal\cdesai_tff\Service;
+
+use Cocur\Slugify\Slugify;
+use Drupal\cdesai_tff\SlugifyServiceInterface;
+use Drupal\Core\Field\FieldItemInterface;
+
+class SlugifyService implements SlugifyServiceInterface {
+
+  /**
+   * @var \Cocur\Slugify\Slugify
+   */
+  protected $slugify;
+
+  /**
+   * Creates new SlugifyService.
+   */
+  public function __construct() {
+    $this->slugify = new Slugify();
+  }
+
+  /**
+   * @inheritDoc
+   */
+  public function convertToSlug(FieldItemInterface $item, $separator = NULL) {
+    // Use the default value if none provided.
+    if (!$separator) {
+      $separator = SlugifyServiceInterface::DEFAULT_SEPARATOR;
+    }
+
+    $origString = $item->getString();
+    return $this->slugify->slugify($origString, $separator);
+  }
+
+}
+

src/SlugifyServiceInterface.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Drupal\cdesai_tff;
+
+
+use Drupal\Core\Field\FieldItemInterface;
+
+interface SlugifyServiceInterface {
+
+  const CONFIG_NAME = 'cdesai_tff.settings';
+  const DEFAULT_SEPARATOR = '_';
+
+  /**
+   * Converts the given item to slug format.
+   *
+   * @param \Drupal\Core\Field\FieldItemInterface $item
+   *   Field item object that needs to be converted.
+   *
+   * @param string|null $separator (optional)
+   *   Separator to use for slug. Defaults to '_'.
+   *
+   * @return string
+   *   The converted string.
+   */
+  public function convertToSlug(FieldItemInterface $item, $separator = NULL);
+
+}