Add ModelManagerInterface::supportsQuery

src/Form/ChoiceList/ModelChoiceLoader.php

@@ -94,9 +94,25 @@ public function __construct(
         $this->modelManager = $modelManager;
         $this->class = $class;
         $this->property = $property;
-        $this->query = $query;
         $this->choices = $choices;
 
+        if ($query) {
+            // NEXT_MAJOR: Remove the method_exists check.
+            if (method_exists($this->modelManager, 'supportsQuery')) {
+                if (!$this->modelManager->supportsQuery($query)) {
+                    // NEXT_MAJOR: Remove the deprecation and uncomment the exception.
+                    @trigger_error(
+                        'Passing a query which is not supported by the model manager is deprecated since'
+                        .' sonata-project/admin-bundle 3.x and will throw an exception in version 4.0.',
+                        E_USER_DEPRECATED
+                    );
+                    // throw new \InvalidArgumentException('The model manager does not support the query.');
+                }
+            }
+
+            $this->query = $query;
+        }
+
         $this->identifier = $this->modelManager->getIdentifierFieldNames($this->class);
 
         // The property option defines, which property (path) is used for

src/Model/ModelManagerInterface.php

@@ -21,6 +21,8 @@
 
 /**
  * A model manager is a bridge between the model classes and the admin functionality.
+ *
+ * @method bool supportsQuery(object $query)
  */
 interface ModelManagerInterface extends DatagridManagerInterface
 {
@@ -293,6 +295,9 @@ public function modelReverseTransform($class, array $array = []);
      */
     public function modelTransform($class, $instance);
 
+    // NEXT_MAJOR: Uncomment this.
+//    public function supportsQuery(object $query): bool;
+
     /**
      * @param object $query
      */

tests/App/Model/ModelManager.php

@@ -185,6 +185,11 @@ public function modelTransform($class, $instance): object
         throw new \BadMethodCallException('Not implemented.');
     }
 
+    public function supportsQuery(object $query): bool
+    {
+        return true;
+    }
+
     public function executeQuery($query): void
     {
     }

tests/Form/ChoiceList/ModelChoiceLoaderTest.php

@@ -17,14 +17,36 @@
 use Sonata\AdminBundle\Form\ChoiceList\ModelChoiceLoader;
 use Sonata\AdminBundle\Model\ModelManagerInterface;
 use Sonata\AdminBundle\Tests\Fixtures\Bundle\Entity\Foo;
+use Symfony\Bridge\PhpUnit\ExpectDeprecationTrait;
 
 class ModelChoiceLoaderTest extends TestCase
 {
+    use ExpectDeprecationTrait;
+
     private $modelManager;
 
     protected function setUp(): void
     {
-        $this->modelManager = $this->getMockForAbstractClass(ModelManagerInterface::class);
+        $this->modelManager = $this->createMock(ModelManagerInterface::class);
+    }
+
+    /**
+     * NEXT_MAJOR: Expect exception instead.
+     *
+     * @group legacy
+     */
+    public function testConstructWithUnsupportedQuery(): void
+    {
+        // NEXT_MAJOR: Use `$this->modelManager` instead
+        $modelManager = $this
+            ->getMockBuilder(ModelManagerInterface::class)
+            ->addMethods(['supportsQuery'])
+            ->getMockForAbstractClass();
+
+        $modelManager->method('supportsQuery')->willReturn(false);
+
+        $this->expectDeprecation('Passing a query which is not supported by the model manager is deprecated since sonata-project/admin-bundle 3.x and will throw an exception in version 4.0.');
+        new ModelChoiceLoader($modelManager, \stdClass::class, null, new \stdClass());
     }
 
     public function testLoadFromEntityWithSamePropertyValues(): void