fixes

composer.json

@@ -17,9 +17,9 @@
         "symfony/console": "^4.4|^5.4",
         "symfony/dependency-injection": "^4.4|^5.4",
         "symfony/property-access": "^4.4|^5.4",
-        "pagerfanta/pagerfanta": "^3.0|^4.0",
+        "pagerfanta/pagerfanta": "^2.4|^3.0|^4.0",
         "psr/log": "^1.0",
-        "ruflin/elastica": "^5.3.5|^6.1.1"
+        "ruflin/elastica": "^5.3.5|^6.1.2"
     },
     "require-dev": {
         "doctrine/orm": "^2.5",

src/Paginator/FantaPaginatorAdapter.php

@@ -12,10 +12,17 @@
 namespace FOS\ElasticaBundle\Paginator;
 
 use Pagerfanta\Adapter\AdapterInterface;
+use Pagerfanta\PagerfantaInterface;
 use Traversable;
 
+if (!method_exists(PagerfantaInterface::class, 'getAdapter')) {
+    class_alias(LegacyFantaPaginatorAdapterTrait::class, FantaPaginatorAdapterTrait::class);
+}
+
 class FantaPaginatorAdapter implements AdapterInterface
 {
+    use FantaPaginatorAdapterTrait;
+
     private $adapter;
 
     /**
@@ -60,19 +67,6 @@ public function getSuggests()
         return $this->adapter->getSuggests();
     }
 
-    /**
-     * Returns a slice of the results.
-     *
-     * @param int $offset The offset
-     * @param int $length The length
-     *
-     * @return iterable The slice
-     */
-    public function getSlice(int $offset, int $length): iterable
-    {
-        return $this->adapter->getResults($offset, $length)->toArray();
-    }
-
     /**
      * {@inheritdoc}
      */

src/Paginator/FantaPaginatorAdapterTrait.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace FOS\ElasticaBundle\Paginator;
+
+trait FantaPaginatorAdapterTrait
+{
+    /**
+     * Returns a slice of the results.
+     *
+     * @param int $offset The offset
+     * @param int $length The length
+     *
+     * @return iterable The slice
+     */
+    public function getSlice(int $offset, int $length): iterable
+    {
+        return $this->adapter->getResults($offset, $length)->toArray();
+    }
+
+    /**
+     * Returns the number of results.
+     *
+     * @return int The number of results
+     */
+    public function getNbResults(): int
+    {
+        return $this->adapter->getTotalHits();
+    }
+}

src/Paginator/LegacyFantaPaginatorAdapterTrait.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace FOS\ElasticaBundle\Paginator;
+
+trait LegacyFantaPaginatorAdapterTrait
+{
+    /**
+     * Returns a slice of the results.
+     *
+     * @param int $offset The offset
+     * @param int $length The length
+     *
+     * @return iterable The slice
+     */
+    public function getSlice($offset, $length)
+    {
+        return $this->adapter->getResults($offset, $length)->toArray();
+    }
+
+    /**
+     * Returns the number of results.
+     *
+     * @return int The number of results
+     */
+    public function getNbResults()
+    {
+        return $this->adapter->getTotalHits();
+    }
+}