我正在第一次在项目中尝试 Laravel Livewire。我正在尝试构建一个相当简单的表单,其中包含一组级联下拉菜单 - 一个输入依赖于另一个输入。但是,当我尝试将雄辩的对象传递给组件属性时,它会转换为字符串,因此我无法访问该对象的任何属性。
我觉得我可能缺少一些非常简单的东西。
这是我的组件代码:
PostComponent.php
class PostComponent extends Component
{
public $manufacturers;
public $manufacturer = 'Select a Manufacturer';
public $cars;
public function mount()
{
$this->manufacturers = Manufacturer::orderBy('name')->get();
}
public function updated()
{
$this->cars = Car::where('manufacturer_id', $this->manufacturer->id)->get();
}
public function render()
{
return view('livewire.post-component');
}
这是我的刀片文件:
<label for="manufacturer">Manufacturer</label>
<select wire:model="manufacturer" id="manufacturer">
<option selected="selected" disabled>Select a Manufacturer</option>
@foreach($manufacturers as $selectableManufacturer)
<option value="{{ $selectableManufacturer }}">{{ $selectableManufacturer->name }}</option>
@endforeach
</select>
当我尝试在下拉列表中选择制造商时,我可以记录$manufacturer并看到该值是
{"id":16,"name":"Manufacturer1","description":"lorem ipsum","created_at":"2020-06-26T23:44:37.000000Z","updated_at":"2020-06-26T23:44:37.000000Z"}
但是,当我尝试在生命周期挂钩中选择汽车时尝试获取id制造商的信息时updated,出现错误
尝试获取非对象的属性“id”
知道为什么会发生这种情况以及如何解决它吗?
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