为 Laravel 集合的每个返回行的每个 json 解码的子级添加文件路径

Question

我是从 Laravel 开发 ِAPi 的新人，我需要将路径应用程序插入到值数组中

$halls = DB::table('halls')
    ->join('imagas','halls.id','=','imagas.id_Halls')
    ->select('halls.id','halls.hall_name','halls.hall_adress','halls.hall_details','price_hours','price_int','halls.hall_name','imagas.image_path')
    ->where('halls.id',157)
    ->get();

$results = [];
foreach ($halls as $hall) {
    $array = json_decode($hall->image_path, true);
    if (is_array($array)) {
        $hall->image_path = 'http://127.0.0.1:8000/Imaga_halls/' . $array;
    }
    array_push($results, $hall);
}

return response()->json($results);

错误是

ErrorException：数组到字符串的转换

Answer 1

$hall->image_path = 'http://127.0.0.1:8000/Imaga_halls/'.$array;

您正在尝试将数组连接到此处的字符串。

Answer 2

在查询生成器上的

get()

方法之后，您将获得集合，以便您可以使用

map()

函数循环每个

hall

对象。

并将前缀路径与图像连接起来：

    $halls = DB::table('halls')
               ->join('imagas','halls.id','=','imagas.id_Halls')
               ->select('halls.id','halls.hall_name','halls.hall_adress','halls.hall_details','price_hours','price_int','halls.hall_name','imagas.image_path')
               ->where('halls.id',157)
               ->get();

    $results = $halls->map(function($hall) {
        $array = json_decode($hall->image_path, true);
        $hall->image_path = collect($array)->map(function($image) {
            return 'http://127.0.0.1:8000/Imaga_halls/'.$image;
        })->toArray();
        return $hall;   
    });

    return response()->json($results);

Answer 3

对

json_decode()

进行映射调用，然后使用

substr_replace()

在图像文件名前添加完整路径，然后将新数据合并到原始行中。 PHPize 演示

return response()->json(
    DB::table('halls')
        ->join('imagas', 'halls.id', '=', 'imagas.id_Halls')
        ->select(
            'halls.id',
            'halls.hall_name',
            'halls.hall_adress',
            'halls.hall_details',
            'price_hours',
            'price_int',
            'halls.hall_name',
            'imagas.image_path'
        )
        ->where('halls.id', 157)
        ->get()
        ->map(
            fn($obj) => array_replace(
                (array) $obj,
                ['image_path' => substr_replace(
                    json_decode($obj->image_path, true),
                    'http://127.0.0.1:8000/Imaga_halls/',
                    0,
                    0
                )]
            )
        )
);

打印漂亮的回复：

[
    {
        "id": 157,
        "hall_name": "ali",
        "hall_adress": "st-50",
        "hall_details": null,
        "price_hours": "3000",
        "price_int": "500",
        "image_path": [
            "http:\/\/127.0.0.1:8000\/Imaga_halls\/1579635535.jpg",
            "http:\/\/127.0.0.1:8000\/Imaga_halls\/1579635536.jpg",
            "http:\/\/127.0.0.1:8000\/Imaga_halls\/1579635537.png",
            "http:\/\/127.0.0.1:8000\/Imaga_halls\/1579635538.png"
        ]
    }
]