fix: supports DBAL 2, and fix convertToDatabaseValue to accept string values

Author: landure

src/MartinGeorgiev/Doctrine/DBAL/Types/Ltree.php

@@ -65,7 +65,7 @@ public function convertToDatabaseValue($value, AbstractPlatform $platform): ?str
     {
         $this->assertPostgreSQLPlatform($platform);
 
-        if ($value instanceof LtreeInterface) {
+        if ($value instanceof LtreeInterface || \is_string($value)) {
             return (string) $value;
         }
 
@@ -78,8 +78,13 @@ public function convertToDatabaseValue($value, AbstractPlatform $platform): ?str
 
     private function assertPostgreSQLPlatform(AbstractPlatform $platform): void
     {
-        if (!$platform instanceof PostgreSQLPlatform) {
-            throw new \LogicException('Ltree DBAL type can only be used with the PostgreSQL platform.');
+        $isDbalTwoPostgres = \class_exists(PostgreSQLPlatform::class)
+            && \is_a($platform, '\Doctrine\DBAL\Platforms\PostgreSqlPlatform');
+
+        if ($platform instanceof PostgreSQLPlatform || $isDbalTwoPostgres) {
+            return;
         }
+
+        throw new \LogicException('Ltree DBAL type can only be used with the PostgreSQL platform.');
     }
 }

tests/Unit/MartinGeorgiev/Doctrine/DBAL/Types/LtreeTest.php

@@ -50,6 +50,14 @@ public function test_get_mapped_database_types(): void
         self::assertSame(['ltree'], $this->fixture->getMappedDatabaseTypes($this->platform));
     }
 
+    public function test_convert_to_database_value_accepts_string(): void
+    {
+        $value = 'alpha.beta.gamma';
+        $databaseValue = $this->fixture->convertToDatabaseValue($value, $this->platform);
+
+        self::assertSame($value, $databaseValue);
+    }
+
     #[DataProvider('provideValidTransformations')]
     #[Test]
     public function can_transform_from_php_value(?LtreeValueObject $ltreeValueObject, ?string $postgresValue): void
@@ -103,7 +111,6 @@ public function throws_exception_for_invalid_database_value_inputs(mixed $phpVal
     public static function provideInvalidDatabaseValueInputs(): array
     {
         return [
-            'string input' => ['not..ltree'],
             'integer input' => [123],
             'array input' => [['not', 'ltree']],
             'boolean input' => [true],