从Symfony中的Controller返回JSON数组 [英] Return a JSON array from a Controller in Symfony

问题描述

我正在尝试从Symfony 2中的控制器返回JSON响应.在Spring MVC的示例中，我可以使用@ResponseBody注释获得JSON响应.我想得到一个JSON响应，如果它是JSON数组或Json对象，则不作任何处理，然后在视图中使用javascript对其进行处理.

I am trying return a JSON response from a controller in Symfony 2. Form example, in Spring MVC I can get a JSON response with @ResponseBody annotattion. I want get a JSON response, no mtter if it is a JSON Array or a Json Object, then, manipulate it with javascript in the view.

我尝试下一个代码:

/**
     * @Route(
     *      "/drop/getCategory/",
     *      name="getCategory"
     * )
     * @Method("GET")
     */
    public function getAllCategoryAction() {
        $categorias = $this->getDoctrine()
                           ->getRepository('AppBundle:Categoria')
                           ->findAll();

        $response = new JsonResponse();
        $response->setData($categorias);

        $response->headers->set('Content-Type', 'application/json');
        return $response;
    }

但是我在浏览器中得到了[{},{}]作为响应.我也尝试使用$response = new Response(json_encode($categorias));，但得到的结果相同.

But I get [{},{}] as Response in the browser. I try with $response = new Response(json_encode($categorias)); too, but I get the same result.

推荐答案

您需要执行此操作(基于先前的答案):

You need to do this (based on previous answer):

public function getAllCategoryAction() {
    $em = $this->getDoctrine()->getManager();
    $query = $em->createQuery(
        'SELECT c
        FROM AppBundle:Categoria c'
    );
    $categorias = $query->getArrayResult();

    $response = new Response(json_encode($categorias));
    $response->headers->set('Content-Type', 'application/json');

    return $response;
}

它与Doctrine以数组形式返回的任何查询完美配合.

It works perfect with any Query that Doctrine returns as array.

这篇关于从Symfony中的Controller返回JSON数组的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！