Symfony Serializer不会将对象数组从camelCase转换为snake_case

Question

有人可以帮我吗？ 我尝试使用Symfony Serializer将对象序列化为json，它确实将对象转换为json但它没有将对象数组从camelCase转换为snake_case。

我目前正在使用默认的Serializer with Symfony 3.3

以下是我的代码。

的应用程序/配置/ config.yml

 framework: 
  serializer:  
    enabled: true
    name_converter: 'serializer.name_converter.camel_case_to_snake_case'

的应用程序/配置/ services.yml

 services:
    get_set_method_normalizer:
        class:Symfony\Component\Serializer\Normalizer\GetSetMethodNormalizer
        public: true
        tags: [serializer.normalizer]

Persons.php

class Person{
     private $firstName;
     private $lastName;
     private $email;

     //setters and getters
}

PersonController.php

class PersonController extends Controller {
     /**
      * @Route("api/person")
      * @Method("POST")
      */
     public function person(){
         $person = new Person();
          $person->setFirstName("test");
          $person->setLastName("test");
          $person->setEmail("test@test.com");

         $person1 = new Person();
         $person1->setFirstName("test 1");
          $person1->setLastName("test 1");
          $person1->setEmail("test1@test.com");
         $arr = array($person, $person1);
         $serializer = $this->get("serializer");
         return new Response($serializer->serialize($arr,"json"));
     }

}

以下是当前的输出。

[
  {
     "firstName":"test",
     "lastName":"test"
     "email":"test@test.com"
  },
  {
     "firstName":"test 1",
     "lastName":"test 1"
     "email":"test@test.com"
  }
]

预期输出为：

 [
   {
      "first_name":"test",
      "last_name":"test",
      "email":"test@test.com"
   },
   {
      "first_name":"test 1",
      "last_name":"test 1",
      "email":"test1@test.com"
   }
]

Answer 1

尝试显式传递服务的参数：

get_set_method_normalizer:
        class:Symfony\Component\Serializer\Normalizer\GetSetMethodNormalizer
        public: true
        arguments: ['@serializer.mapping.class_metadata_factory', '@serializer.name_converter.camel_case_to_snake_case']
        tags: [serializer.normalizer]

Answer 2

为camel_case_to_snake_case添加别名更容易

services:
    ...
    Symfony\Component\Serializer\NameConverter\NameConverterInterface: '@serializer.name_converter.camel_case_to_snake_case'

Answer 3

对于symfony 4，这对我有用：

Symfony\Component\Serializer\Normalizer\GetSetMethodNormalizer:
    public: true
    arguments: ['@serializer.mapping.class_metadata_factory', '@serializer.name_converter.camel_case_to_snake_case']
    tags: [serializer.normalizer]

将代码放在“服务”部分的app / config / services.yaml中。