Add the concept of "validation_mode"

docs/validation/index.md

@@ -7,6 +7,7 @@ to validate user input data. It currently supports only GraphQL schemas defined
 
 ###  Contents:
 - [Overview](#overview)
+- [Mode](#mode)
 - [How does it work?](#how-does-it-work)
 - [Applying of validation constraints](#applying-of-validation-constraints)
     - [Listing constraints directly](#listing-constraints-directly)
@@ -109,6 +110,20 @@ The `birthdate` field is of type `input-object` and is marked as `cascade` so it
 - **month** is between 1 and 12
 - **year** is between 1900 and 2019
 
+# Mode
+
+There are two modes for validation, `full` (default) and `partial`. 
+
+`full` mode will always validate _all_ arguments/parameters of the type, even if they are not passed (where the types are optional).
+
+`partial` mode will only validate the arguments/parameters that are passed. This can be useful if you want to validate only the data that is actually sent by the client.
+
+To change the mode, you can set the `validation_mode` option in the main configuration:
+
+```yaml
+overblog_graphql:
+    validation_mode: full | partial
+```
 
 ## How does it work?
 

src/DependencyInjection/Configuration.php

@@ -51,6 +51,7 @@ public function getConfigTreeBuilder(): TreeBuilder
         $rootNode
             ->children()
                 ->append($this->batchingMethodSection())
+                ->append($this->validationModeSection())
                 ->append($this->definitionsSection())
                 ->append($this->errorsHandlerSection())
                 ->append($this->servicesSection())
@@ -77,6 +78,21 @@ private function batchingMethodSection(): EnumNodeDefinition
         return $node;
     }
 
+    private function validationModeSection(): EnumNodeDefinition
+    {
+        $builder = new TreeBuilder('validation_mode', 'enum');
+
+        /** @var EnumNodeDefinition $node */
+        $node = $builder->getRootNode();
+
+        $node
+            ->values(['full', 'partial'])
+            ->defaultValue('full')
+            ->end();
+
+        return $node;
+    }
+
     private function errorsHandlerSection(): ArrayNodeDefinition
     {
         $builder = new TreeBuilder('errors_handler');

src/DependencyInjection/OverblogGraphQLExtension.php

@@ -43,6 +43,7 @@ public function load(array $configs, ContainerBuilder $container): void
         $config = $this->processConfiguration($configuration, $configs);
 
         $this->setBatchingMethod($config, $container);
+        $this->setValidationMode($config, $container);
         $this->setServicesAliases($config, $container);
         $this->setSchemaBuilderArguments($config, $container);
         $this->setSchemaArguments($config, $container);
@@ -151,6 +152,11 @@ private function setBatchingMethod(array $config, ContainerBuilder $container):
         $container->setParameter($this->getAlias().'.batching_method', $config['batching_method']);
     }
 
+    private function setValidationMode(array $config, ContainerBuilder $container): void
+    {
+        $container->setParameter($this->getAlias().'.validation_mode', $config['validation_mode']);
+    }
+
     private function setDebugListener(array $config, ContainerBuilder $container): void
     {
         if ($config['definitions']['show_debug_info']) {

src/Resources/config/services.yaml

@@ -123,5 +123,6 @@ services:
             - "@?validator.validator_factory"
             - "@?validator"
             - "@?translator.default"
+            - "%overblog_graphql.validation_mode%"
         tags:
             - { name: overblog_graphql.service, alias: input_validator_factory, public: false }

src/Validator/InputValidator.php

@@ -42,6 +42,7 @@ final class InputValidator
     private ResolveInfo $info;
     private ConstraintValidatorFactoryInterface $constraintValidatorFactory;
     private ?TranslatorInterface $defaultTranslator;
+    private string $validationMode;
 
     /** @var ClassMetadataInterface[] */
     private array $cachedMetadata = [];
@@ -50,14 +51,16 @@ public function __construct(
         ResolverArgs $resolverArgs,
         ValidatorInterface $validator,
         ConstraintValidatorFactoryInterface $constraintValidatorFactory,
-        ?TranslatorInterface $translator
+        ?TranslatorInterface $translator,
+        string $validationMode
     ) {
         $this->resolverArgs = $resolverArgs;
         $this->info = $this->resolverArgs->info;
         $this->defaultValidator = $validator;
         $this->constraintValidatorFactory = $constraintValidatorFactory;
         $this->defaultTranslator = $translator;
         $this->metadataFactory = new MetadataFactory();
+        $this->validationMode = $validationMode;
     }
 
     /**
@@ -140,7 +143,7 @@ private function buildValidationTree(ValidationNode $rootObject, iterable $field
             $property = $arg['name'] ?? $name;
             $config = static::normalizeConfig($arg['validation'] ?? []);
 
-            if (!array_key_exists($property, $inputData)) {
+            if ("partial" === $this->validationMode && !array_key_exists($property, $inputData)) {
                 // This field was not provided in the inputData. Do not attempt to validate it.
                 continue;
             }

src/Validator/InputValidatorFactory.php

@@ -15,18 +15,21 @@ final class InputValidatorFactory
     private ?ValidatorInterface $defaultValidator;
     private ?ConstraintValidatorFactoryInterface $constraintValidatorFactory;
     private ?TranslatorInterface $defaultTranslator;
+    private string $validationMode;
 
     /**
      * InputValidatorFactory constructor.
      */
     public function __construct(
         ?ConstraintValidatorFactoryInterface $constraintValidatorFactory,
         ?ValidatorInterface $validator,
-        ?TranslatorInterface $translator
+        ?TranslatorInterface $translator,
+        string $validationMode
     ) {
         $this->defaultValidator = $validator;
         $this->defaultTranslator = $translator;
         $this->constraintValidatorFactory = $constraintValidatorFactory;
+        $this->validationMode = $validationMode;
     }
 
     public function create(ResolverArgs $args): InputValidator
@@ -39,7 +42,8 @@ public function create(ResolverArgs $args): InputValidator
             $args,
             $this->defaultValidator,
             $this->constraintValidatorFactory,
-            $this->defaultTranslator
+            $this->defaultTranslator,
+            $this->validationMode
         );
     }
 }

tests/Functional/App/config/validator/config.yml

@@ -6,6 +6,7 @@ framework:
         enabled: true
 
 overblog_graphql:
+    validation_mode: partial
     definitions:
         config_validation: false
         class_namespace: "Overblog\\GraphQLBundle\\Validator\\__DEFINITIONS__"

tests/Validator/InputValidatorTest.php

@@ -29,7 +29,7 @@ public function testNoDefaultValidatorException(): void
     {
         $this->expectException(ServiceNotFoundException::class);
 
-        $factory = new InputValidatorFactory(null, null, null);
+        $factory = new InputValidatorFactory(null, null, null, 'full');
 
         $factory->create(new ResolverArgs(
             true,