(livewire-datatables) 无法访问我对同一模型的两个关系

Question

我有两个与同一个相关的外键table 当我尝试将这两列添加到 datatable 时，所有数据仅从其中的第一个解析。

我的代码

城市

$table->id();
$table->string('name');

行程

$table->id();
$table->foreignId('from_ctiy_id')->references('id')->on('cities');
$table->foreignId('to_ctiy_id')->references('id')->on('cities');

在 Trip 模型中我建立了两个关系

public function from_ctiy()
{ return $this->belongsTo(City::class, 'from_ctiy_id'); }
public function to_ctiy()
{ return $this->belongsTo(City::class, 'to_ctiy_id'); }

没问题我可以正常访问这两列

$trip->from_city->name;
$trip->to_city->name;

但是当我在 livewire-data 中创建列时table

Column::name('from_city.name')->lable('From'),
Column::name('to_city.name')->lable('To'),

我从第一列中得到两列table相同的数据

From	To
Fcity	Fcity
Fcity	Fcity

我应该得到 Fcity 和 Tcity

Answer 1

U have to build manually the join query like below.

public function builder()
{
    return Trip::query()
        ->leftJoin('City as c1', 'from_ctiy_id', 'c1.id')
        ->leftJoin('City as c2', 'to_ctiy_id', 'c2.id');
}

public function columns()
{
    return [
        Column::name('c1.name')->label("From"),
        Column::name('c2.name')->label("To")
    ];
}

(livewire-datatables) 无法访问我对同一模型的两个关系

(livewire-datatables) Can't access to my two relationships to the same model

laravel

laravel-livewire