在 laravel 视图中显示嵌套集合

Question

我是 Laravel 新手，这是我遇到的问题 有 3 个表具有这种关系：

AttributeGroup -> 一对多-> AttributeGroupMapping

AttributeGroupMapping -> 多对一 -> 属性

我准备了模型和控制器，我得到了这个集合：

lluminate\Database\Eloquent\Collection {#3093
     all: [
       App\AttributeGroup {#3085
         id: 1,
         name: "General",
         position: 1,
         is_user_defined: 0,
         attribute_family_id: 1,
         created_at: "2019-11-23 20:46:27",
         updated_at: "2019-11-23 20:46:27",
         attributeGroupMapping: Illuminate\Database\Eloquent\Collection {#3079
           all: [
             App\AttributeGroupMapping {#3106
               attribute_id: 1,
               attribute_group_id: 1,
               position: 1,
               created_at: "2019-11-23 20:46:27",
               updated_at: "2019-11-23 20:46:27",
               Attribute: App\Attribute {#3109
                 id: 1,
                 code: "phone1",
                 admin_name: "Phone 1",
                 type: "text",
                 validation: null,
                 position: 1,
                 is_required: 1,
                 is_unique: 0,
                 value_per_locale: 0,
                 value_per_channel: 0,
                 is_filterable: 0,
                 is_configurable: 0,
                 is_user_defined: 0,
                 is_visible_on_front: 0,
                 swatch_type: null,
                 use_in_flat: 1,
                 created_at: "2019-11-23 20:46:27",
                 updated_at: "2019-11-23 20:46:27",
               },
             },
             App\AttributeGroupMapping {#3096
               attribute_id: 2,
               attribute_group_id: 1,
               position: 9,
               created_at: "2019-11-23 20:46:27",
               updated_at: "2019-11-23 20:46:27",
               Attribute: App\Attribute {#3117
                 id: 2,
                 code: "notes",
                 admin_name: "notes",
                 type: "textarea",
                 validation: null,
                 position: 9,
                 is_required: 0,
                 is_unique: 0,
                 value_per_locale: 0,
                 value_per_channel: 0,
                 is_filterable: 0,
                 is_configurable: 0,
                 is_user_defined: 0,
                 is_visible_on_front: 0,
                 swatch_type: null,
                 use_in_flat: 1,
                 created_at: "2019-11-23 20:46:27",
                 updated_at: "2019-11-23 20:46:27",
               },
             },
           ],
         },
       },
       App\AttributeGroup {#3077
         id: 2,
         name: "Detalle",
         position: 2,
         is_user_defined: 0,
         attribute_family_id: 1,
         created_at: "2019-11-23 20:46:27",
         updated_at: "2019-11-23 20:46:27",
         attributeGroupMapping: Illuminate\Database\Eloquent\Collection {#3070
           all: [],
         },
       },
     ],
   }

现在，我怎样才能使用 foreach trow 循环 3 个级别，以便获得： ......AttributeGroup（每一个）

.............属性映射（每一个）

.......................属性（每一个）

这是我发送到视图的内容：

$attributesGroups= AttributeGroup::with('attributeGroupMapping.Attribute')->get();
return view('admin.contact-conf', compact('attributesGroups'));

我怎样才能让它工作？ 谢谢

Answer 1

无论如何，您都可以通过dd(attributesGroups) 在您的视图中看到您传递的内容，我认为以下代码将在您的视图中起作用：

@foreach ($attributesGroups as $attributesGroup)
        <p>{{$attributesGroup->name}}<p>
        @foreach ($attributesGroup->attributeGroupMapping as $attributeGroupMappingItem)
            <p>{{$attributeGroupMappingItem->Attribute->code}}</p>
    @endforeach
@endforeach