在同一 table Laravel 5.6 中返回 parents 的 children 时在嵌套循环中遇到问题

Question

我有一个 table account_heads 在我返回 children 的地方 parents 同样 table。到现在为止一切都很好，但是当我在表格中显示这些时遇到了问题。我有 4 或 5 个级别 children of parents 在相同的 table。我的礼物 loop 就像下面这样-

@foreach ($accountHeads as $accountHead)
     @foreach ($accountHead->children as $children)
         <option value="{{ $children->id }}">{{ $children->name }} @if($children->code) ({{ $children->code }})@endif</option>
         @foreach($children->children as $c1)
            <option value="{{ $c1->id }}"> -- {{ $c1->name }} @if($c1->code) ({{ $c1->code }})@endif</option>
            @foreach($c1->children as $c2)
                <option value="{{ $c2->id }}"> ---- {{ $c2->name }} @if($c2->code) ({{ $c2->code }})@endif</option>
                @foreach($c2->children as $c3)
                      <option value="{{ $c3->id }}"> ------ {{ $c3->name }} @if($c3->code) ({{ $c3->code }})@endif</option>
                      @foreach($c3->children as $c4)
                      <option value="{{ $c4->id }}"> -------- {{ $c4->name }} @if($c4->code) ({{ $c4->code }})@endif</option>
                         @foreach($c4->children as $c5)
                         <option value="{{ $c5->id }}"> ---------- {{ $c5->name }} @if($c5->code) ({{ $c5->code }})@endif</option>
                            @foreach($c5->children as $c6)
                            <option value="{{ $c6->id }}"> ------------ {{ $c6->name }} @if($c6->code) ({{ $c6->code }})@endif</option>
                             @endforeach
                      @endforeach
                 @endforeach
              @endforeach
          @endforeach
       @endforeach
    @endforeach
@endforeach

我想最小化上面的循环。 我想得到的结果就像下面这样-

我的数据库table结构如下-

我的账户AccountHeadsController的create方法如下-

public function create()
{

    $accountHeads = AccountHead::with('children')->where('parent_id', 0)->get();
    return view('account.account-head.create', compact('accountHeads'));
}

而AccountHead模型如下-

class AccountHead extends Model
{
    use SoftDeletes;
    use Updater;

    protected $table = 'account_heads';
    protected $fillable = [
    'name', 'code', 'memo', 'opening_balance', 'parent_id', 'status', 'created_by', 'updated_by', 'deleted_by'
    ];

    public function parent()
    {
        return $this->belongsTo('App\Model\AccountHead','parent_id')->where('parent_id',0)->with('parent');
    }

    public function children()
    {
    return $this->hasMany('App\Model\AccountHead','parent_id')->with('children');
    }
}

Answer 1

我自己是这样做的：

已创建帮助文件：App/Helpers/MyHelper.php

MyHelper.php 文件:

<?php
namespace App\Helpers;

class MyHelper
{
  public static function dd($array, $step = 0)
{
    $output = '';
        foreach($array as $arr)
        {
            $output .= '<option  value="'.$arr->id.'">'.str_repeat('&nbsp;&nbsp;&nbsp;',$step). $arr->name.'</option>';
            if($arr->children)
            {
                $output .= self::dd($arr->children, $step+1);
            }
        }
    return $output;
}
}

并将其添加到 /config/app.php 别名下。

'MyHelper'  => App\Helpers\MyHelper::class,

那么在你看来你可以使用：

<select>
 {!! MyHelper::dd($accountHeads) !!}
</select>

在同一 table Laravel 5.6 中返回 parents 的 children 时在嵌套循环中遇到问题

Getting trouble in nested loop when returning children of parents in same table Laravel 5.6

foreach

relationship

nested-loops

laravel

eloquent