在 Laravel 中将二维数组转换为 json 对象

Question

我正在将二维数组转换为 JSON 对象。

现在我的控制器返回这个输出：

[
    [
        {
            "id": 1,
            "title": "V1",
            "project_id": 1
        }
    ],
    []
]

想把它转换成这样：

[
  {
    "id": 1,
    "name": "Laravel"
  },
  {
    "id": 2,
    "name": "Wordpress"
  }
]

我的控制器代码：

$user = auth()->user();
$projectVersions = array();

foreach($user->projects as $project)
{
    $projectId = $project->pivot->project_id;
    $projectVersions[] = Version::where('project_id', $projectId)
        ->where('created_by', $user->id)
        ->get();
}

return $projectVersions;

当我使用@John Lobo 建议的以下代码时，它会返回以下输出：

{
  "id": 2,
  "name": "Hadayat Niazi",
  "email": "niazicr801@gmail.com",
  "is_admin": 0,
  "email_verified_at": null,
  "created_at": "2021-06-11T15:13:00.000000Z",
  "updated_at": "2021-06-11T15:13:00.000000Z",
  "projects": [
    {
      "id": 1,
      "name": "Laravel",
      "pivot": {
        "user_id": 2,
        "project_id": 1
      },
      "versions": [
        {
          "id": 1,
          "title": "V1"
        }
      ]
    }
  ]
}

显示用户项目和版本：

我再次更新@John Lobo 的代码，他想查看输出

$user = User::with(['projects', 'projects.versions'])
    ->find(auth()->user()->id);

$result = $user->projects->map(function ($project) {
    return [
        $project->versions,
    ];
});

return $result;

输出代码

[
    [
        [
            {
                "id": 1,
                "title": "V1",
                "project_id": 1,
                "version": "1.22",
                "created_by": 2,
                "is_publish": 0,
                "feature": "<b>In this ipdate asdsdasd</b>",
                "bug_fix": "<p><b>sdfdffffffffff</b></p>",
                "created_at": "2021-06-12T08:08:21.000000Z",
                "updated_at": "2021-06-12T08:08:21.000000Z"
            },
            {
                "id": 2,
                "title": "v2",
                "project_id": 1,
                "version": "2.12",
                "created_by": 2,
                "is_publish": 0,
                "feature": "adsdasdsadas",
                "bug_fix": "sddasdas",
                "created_at": null,
                "updated_at": null
            }
        ]
    ],
    [
        []
    ]
]

Answer 1

在控制器中，您可以执行以下操作。如果您在名为版本的项目模型中有关系

  $projectVersions=User::with(['projects','projects.version'])->find(auth()->user()->id);
    
  return $projectVersions->projects;

我相信项目模型有以下关系

public function version(){

return $this->hasMany(Version::class);
}

更新

$user=User::with(['projects','projects.versions'])->find(auth()->user()->id);

    $result = $user->projects->map(function ($project) {

        return $project->versions;
    });

 dd($result);

Answer 2

像下面这样使用

$json = json_encode($responseOfController);
echo "<pre>";print_r($json);die;