--- /dev/null
+<?php
+
+namespace Drupal\search\Plugin\views\sort;
+
+use Drupal\views\Plugin\views\sort\SortPluginBase;
+
+/**
+ * Sort handler for sorting by search score.
+ *
+ * @ingroup views_sort_handlers
+ *
+ * @ViewsSort("search_score")
+ */
+class Score extends SortPluginBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function query() {
+ // Check to see if the search filter/argument added 'score' to the table.
+ // Our filter stores it as $handler->search_score -- and we also
+ // need to check its relationship to make sure that we're using the same
+ // one or obviously this won't work.
+ foreach (['filter', 'argument'] as $type) {
+ foreach ($this->view->{$type} as $handler) {
+ if (isset($handler->search_score) && $handler->relationship == $this->relationship) {
+ $this->query->addOrderBy(NULL, NULL, $this->options['order'], $handler->search_score);
+ $this->tableAlias = $handler->tableAlias;
+ return;
+ }
+ }
+ }
+
+ // Do nothing if there is no filter/argument in place. There is no way
+ // to sort on scores.
+ }
+
+}