number_format（）期望參數1是雙倍的，數組給出

Question

我是laravel的新手，所以很抱歉如果這個問題看起來很簡單等。

我想在給定的月份和年份顯示credit_memo的總和，但它顯示錯誤：「number_format（）期望參數1爲double，數組給出」，我不知道什麼是源錯誤。

CreditMemoModel

<?php namespace App; 

use Illuminate\Database\Eloquent\Model; 

class CreditMemoModel extends Model{ 
    public $table = "credit_memo"; 

    public function getTotalAmount(){ 
     return $this->credit_memo()->total_amount; 
    } 
} 

?> 

CMController（只貸記通知單相關的）

use App\CreditMemoModel; 
$credit_memos = CreditMemoModel::all(); 
$data    = []; 
    foreach($date_arr as $date_index){ 
     foreach ($credit_memos as $credit_memo) { 
      $data[$date_index]['credit_memos'][$credit_memo->total_amount] = 0; 
     } 
} 

和視圖

<td>Credit Memo</td> 
     @foreach($date_arr as $date) 
     <td class="text-right">{{ number_format($data[$date]['credit_memos'],2) }}</td> 
     <?php $qtotal += $data[$date]['credit_memos']; ?> 
     @endforeach 
     <td class="text-right">{{number_format($qtotal, 2)}}</td> 

Answer 1

看來這行有一些問題

<td class="text-right">{{ number_format($data[$date]['credit_memos'],2) }}</td> 

在您的視圖文件，似乎有一些問題與$數據和$ date_arr和$日期

能否請你檢查這行..