Question

我的Laravel应用程序有一个简单的问题。但我找不到任何解决方案。请在此处查看我的代码：

控制器：

public function index(){
    $members = Member::paginate(15);

    $meal_entry = Member::all();
    $breakfast = DB::SELECT("SELECT self_meal_breakfast + guest_meal_breakfast AS breakfast FROM meal_entry");
    $lunch = DB::SELECT("SELECT self_meal_lunch + guest_meal_lunch AS lunch FROM meal_entry");        
    $dinner = DB::SELECT("SELECT self_meal_dinner + guest_meal_dinner AS dinner FROM meal_entry");
    $total_meal = DB::SELECT("SELECT self_meal_breakfast + self_meal_lunch + self_meal_dinner + guest_meal_breakfast + guest_meal_lunch + guest_meal_dinner AS total FROM meal_entry");

    return view('member.mealView', compact('members','data','breakfast','lunch','dinner','meal_entry','total_meal'));
}

刀片视图

<tbody>
    <tr>
        @foreach($meal_entry as $value)
        <td>{{ $value->created_at }}</td>
        @endforeach                                        
        @foreach($breakfast as $value)
        <td>{{ $value->breakfast }}</td>
        @endforeach                                        
        @foreach($lunch as $value)
        <td>{{ $value->lunch }}</td>
        @endforeach                                        
        @foreach($dinner as $value)
        <td>{{ $value->dinner }}</td>
        @endforeach                                        
        @foreach($total_meal as $value)
        <td>{{ $value->total }}</td>
        @endforeach                                        
        @foreach($meal_entry as $value)
        <td>{{ $value->created_at }}</td>
        @endforeach
    </tr>
</tbody>

表格： meal_entry 。

如果数据库中有一个row，那么可以查看它（ see ）。但是当row多于一个时，在一个row中显示所有数据（ see ）。我该如何处理这些事情？我认为它应该运行另一个循环，但我怎么能这样做？提前谢谢。

Answer 1

所以，如果你正在使用Laravel，那么最好的功能之一是访问者：

https://laravel.com/docs/5.2/eloquent-mutators#accessors-and-mutators

您可以创建新属性并将其用作模型属性。

对于某些东西非常有用。

class Meal extends Model
{
    public function getTotalBreakfastAttribute()
    {
        return $this->self_meal_breakfast + $this->guest_meal_breakfast;
    }
}

然后，将此访问器用作属性：

<tbody>
   @foreach($foods as $value)
    <tr>
       <td> {{$value->total_breakfast}} </td> 
       <td> {{$value->created_at}} </td>
    </tr>
  @endforeach
</tbody>

或者如果您不想这样做，而不是使用多个查询来获取数据，只需使用一个，因为所有字段都在同一个表中，然后，您可以使用上面的示例。 / p>

享受！：）

Answer 2

一个快速补丁是只做一个查询，然后对视图进行计算（我知道在视图中进行计算不是一个好习惯，但这是我能看到的最简单的方法）。 / p>

就像这样：

<强>控制器：

public function index(){
    $members = Member::paginate(15);

    return view('member.mealView', compact('members'));
}

刀片视图

<tbody>
    @foreach($members as $meal_entry)
    <tr>
        <td>{{ $meal_entry->created_at }}</td>

        <td>{{ $breakfast = $meal_entry->self_meal_breakfast + $meal_entry->guest_meal_breakfast }}</td>

        <td>{{ $lunch = $meal_entry->self_meal_lunch+ $meal_entry->guest_meal_lunch}}</td>

        <td>{{ $dinner = $meal_entry->self_meal_dinner + $meal_entry->guest_meal_dinner }}</td>

        <td>{{ $breakfast + $lunch + $dinner }}</td>

        <td>{{ $meal_entry->created_at }}</td>
    </tr>
    @endforeach 
</tbody>

请记得添加

{{ $members->links() }}

你想要的分页链接。

如何显示数据库中的所有行 - Laravel 5.2？

2 个答案: