Question

我试图在Laravel中创建一个嵌套集合。目前我正在使用多维数组：

foreach ($combination->attributes as $attr) {
        $groups['group'][$attr->group->language->name][] = $attr->language;
}

我如何使用Laravel集合复制它？我希望能够利用lists方法和groupBy方法吗？

这是数据的样子：

array:1 [▼
  "group" => array:2 [▼
    "Finish" => array:3 [▼
      0 => AttributeLanguage {#257 ▶}
      1 => AttributeLanguage {#234 ▶}
      2 => AttributeLanguage {#256 ▶}
    ]
    "Print Size" => array:3 [▼
      0 => AttributeLanguage {#252 ▶}
      1 => AttributeLanguage {#252 ▶}
      2 => AttributeLanguage {#252 ▶}
    ]
  ]
]

Answer 1

您可以将groupBy()用于此

例如：

$collection = collect([
    ['language' => 'hindi', 'product' => 'Chair'],
    ['language' => 'hindi', 'product' => 'Bookcase'],
    ['language' => 'english', 'product' => 'Desk'],
]); // this is for showing array may be like 

OR 

$collection =  AttributeLanguage::all(); // this might you are using or any other way.


$grouped = $collection->groupBy('language'); // this is a collection you can see by using dd($grouped) here.

在此处将集合显示为数组。

$grouped->toArray(); 

/*
    [
        'hindi' => [
            ['language' => 'hindi', 'product' => 'Chair'],
            ['language' => 'hindi', 'product' => 'Bookcase'],
        ],
        'english' => [
            ['language' => 'english', 'product' => 'Desk'],
        ],
    ]
*/

更多访问Laravel文档：https://laravel.com/docs/5.2/collections#method-groupby

如何在Laravel中创建嵌套集合？

1 个答案: