Laravel：将分组数据转换为一行

Question

您好，我想将具有重复键和不同值的分组数据转换为一行。 例如 ：

    "book1" {
    {
        "id" : "1",
        "group" : "book1",
        "name" : "Book X",
        "buy" : "null",
        "test" : "null",
    } ,
    {
        "id" : "1",
        "group" : "book1",
        "name" : "null",
        "buy" : "100",
        "test" : "null",
    } ,
    {
        "id" : "1",
        "group" : "book1",
        "name" : "null",
        "buy" : "null",
        "test" : "344",
    }
 },
    "book2" {
 {
        "id" : "1",
        "group" : "book2",
        "name" : "Book Y",
        "buy" : "null",
        "test" : "null",
    }
    ....
 } 
    ...

我想要做的是将所有这些带有公用键的数组转换为数据库中的一个数组或一行，其中数据像示例一样分组，数据按组字段分组，我想要做的就是这样：

{
  "id" : "1",
  "group" : "book1",
  "name" : "Book X",
  "buy" : "100",
  "test" : "344",
}

请你能帮助修复 php 代码（laravel 模型）或 SQL 查询，非常感谢！

Answer 1

尝试这个

 $data = []; // your data
    $response = [];
    foreach($data as $key => $d){
       if($d['id'] != null) $response[$key]['id'] = $d['id'];
       if($d['group'] != null) $response[$key]['group'] = $d['group'];
       if($d['name'] != null) $response[$key]['name'] = $d['name'];
       if($d['buy'] != null) $response[$key]['buy'] = $d['buy'];
       if($d['test'] != null) $response[$key]['test'] = $d['test'];

    }

已编辑

你已经使用了" " fo null 所以使用如下

$response = [];
        foreach($data as $key => $d){
           if($d['id'] != "null") $response[$d['group']]['id'] = $d['id'];
           if($d['group'] != "null") $response[$d['group']]['group'] = $d['group'];
           if($d['name'] != "null") $response[$d['group']]['name'] = $d['name'];
           if($d['buy'] != "null") $response[$d['group']]['buy'] = $d['buy'];
           if($d['test'] != "null") $response[$d['group']]['test'] = $d['test'];

        }

编辑 2

$response = [];
            foreach($data as $key => $row){
                $array = [];
               foreach($row as $d){
                if($d['id'] != null) $array['id'] = $d['id'];
                if($d['group'] != null) $array['group'] = $d['group'];
                if($d['name'] != null) $array['name'] = $d['name'];
                if($d['buy'] != null) $array['buy'] = $d['buy'];
                if($d['test'] != null) $array['test'] = $d['test'];
               }
              $response[$key][] = $array;
            }

    dd($response);

Answer 2

使用 groupBy()

$data = App\ModelName::groupBy('test')->get();