laravel - 获取具有 Eloquent 关系的 parent 数据

Question

我有这样的表:

主表

    id      titile      desc
    1       one         one is one
    2       two         two is two

子表

    id      value       master_id
    1       first       1
    2       second      1
    3       third       1
    4       fourth      1

所以当我成功检索数据时，它将是这样的 json:

    Master_Table {
        id:1,
        title:'one',
        desc: 'one is one',
        Child_Table: [
            {id: 1, value:"first", master_id:1},
            {id: 2, value:"second", master_id:1},
            {id: 3, value:"third", master_id:1},
            {id: 4, value:"fourth", master_id:1},
        ]
    }

我这样做:

    $json= PDH::find(1)->products()->where('product_highlight_id', 1)->get();

但结果只是 child

        Child_Table: [
            {id: 1, value:"first", master_id:1},
            {id: 2, value:"second", master_id:1},
            {id: 3, value:"third", master_id:1},
            {id: 4, value:"fourth", master_id:1},
        ]

我确信 Laravel Eloquent 中可以使用此功能，但我很难找到它。有人可以向我指出吗？

提前致谢。

Answer 1

使用with()方法:

$pdh = PDH::with('products')->where('product_highlight_id', 1)->find(1);

然后 $pdh 将包含父对象，而 $pdh->products 将是产品集合。