我正在嘗試使用下拉串列更新表欄位。我讓它只處理單行資料，但我無法讓 livewire 跟蹤行。我認為這是我應該尋找的地方，但我沒有遵循該做什么。https://laravel-livewire.com/docs/2.x/nesting-components
[前三行螢屏截圖][1] [1]：https : //i.stack.imgur.com/znG96.png 第一個下拉選單基本上是一類類別，第二個下拉選單是我想要的特定類別分配給交易。
主視圖
@livewire('transaction-category', ['types'=>$types], key($types->type))
成分
<div>
<td class="border" >
<select name="types" wire:model="types" class="inv_select ">
<option value=''>Choose Category Class</option>
@foreach($types as $t)
<option value={{ $t->type }}>{{ $t->type }}</option>
@endforeach
</select>
</td>
//@if(count($subclass>0)
<td>
<select name="subclass" wire:model="subclass" class="inv_select">
<option value=''>Choose Category</option>
@foreach($subclass as $s)
<option value={{ $s->type }}>{{ $s->type }}</option>
@endforeach
</select>
</td>
//@endif
</div>
火線模型
namespace App\Http\Livewire;
use Livewire\Component;
use App\Models\Category;
class TransactionCategory extends Component
{
public $types;
public $subclass=[];
public function mount(){
$this->types=Category::select('type')->groupby('type')->get();
}
public function updatedTypes(){
dd($this->subclass =Category::subs($this->types));
$this->subclass =Category::subs($this->types);
}
public function render()
{
return view('livewire.transaction-category');
}
}
uj5u.com熱心網友回復：
您需要更好地了解 livewire 對公共屬性的含義以及集合之間的區別。我不清楚你的表回圈的模型是什么，所以我假設是關于事務模型的。
我的方法首先是
@livewire('transaction-category', ['transaction' => $transaction], key($transaction->id))
public Transaction $transaction;
public $selectedType, $selectedSub;
public $types, $subclass;
public function mount(){
// I'm going to improve with your code
$this->types = Category::all();
$this->subclass = Collection()->empty();
}
public function updatedSelectedType($value)
{
if($value) {
$this->subclass = Category::subs($this->types)->get();
} else {
$this->subclass = Collection()->empty();
}
}
和刀片元素
<div>
<td class="border" >
<select name="types" wire:model="selectedType" class="inv_select ">
<option value=''>Choose Category Class</option>
@foreach($types as $t)
<option value={{ $t->type }}>{{ $t->type }}</option>
@endforeach
</select>
</td>
@if(count($subclass))
<td>
<select name="subclass" wire:model="selectedSub" class="inv_select">
<option value=''>Choose Category</option>
@foreach($subclass as $s)
<option value={{ $s->type }}>{{ $s->type }}</option>
@endforeach
</select>
</td>
@endif
</div>
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