如何计算成绩然后传递给 blade 模板

Question

我有 table 命名为 SCORE，它有列名称 Result，我想根据值应用成绩计算从 RESULT 像这样

if('result'>=90)
{grade=A+}

这是我的成绩转换

90% 到 100% (A+),80% 到 89% (A),70% 到 79% (B),60% 到 69% (C),50% 到 59% (D), 40% 到 49% (E),30% 到 39% (F),20% 到 29% (G),28% 到 0% (N/A),null(W)

注意我不知道如何在我的控制器中执行此操作并传递给 blade

控制器：

public function index($id)
  {

    $leads=Lead::findorFail($id);
    $scores = Score::with('lead','subject')->where('lead_id','=',$id)->get();

    $from = date('2018-01-01');
    $to = date('2018-03-31');
    $atnds = DB::table('attendances')
                     ->select(DB::raw('count(*) as total, status'))
                     ->where('status', '=', 'P')
                     ->whereBetween('days', [$from,$to])
                     ->groupBy('status')
                     ->where('lead_id', '=', $id)
                     ->get();
    $pdf = PDF::loadView('reports.pdf', compact(['scores','atnds','leads']));
    $pdf->setPaper('A4', 'landscape');



    return $pdf->stream('data.pdf');
  }

查看

@foreach($scores as $score)

<td>&nbsp;{{$score->subject->subject_name}}</td>
<td>&nbsp;{{$score->result}}</td>
<td>&nbsp;{{This where i want to put grade}}</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>

@endforeach

Answer 1

我高度建议您不要在视图中执行此操作，而是在模型或库中某处进行计算。

假设你在分数模型中这样做，你可以这样做：

public function getGrade() {
    if(is_null($this->result)){ return 'W'; }
    if($this->result >= 90) { return 'A+'; }
    if($this->result < 90 && $this->result >= 80) { return 'A'; }   
    if($this->result < 80 && $this->result >= 70) { return 'B'; }   
    if($this->result < 70 && $this->result >= 60) { return 'C'; }   
    if($this->result < 60 && $this->result >= 50) { return 'D'; }   
    if($this->result < 50 && $this->result >= 40) { return 'E'; }   
    if($this->result < 40 && $this->result >= 30) { return 'F'; }   
    if($this->result < 30 && $this->result >= 20) { return 'G'; }   
    if($this->result < 20) { return 'N/A'; }        
}

然后在你看来这样称呼它：

$score->getGrade();

如何计算成绩然后传递给 blade 模板

How to calculated grade then pass to blade template

php

laravel

laravel-blade

laravel-query-builder