Laravel找出在角色中选择了哪些权限

Question

在我的web应用程序中，我有两个表role和permission，我可以将每个permission与role表同步

我想找出哪些权限在角色的权限中，因为选择了then in视图，例如我有10个权限，其中四个项目与role表同步，我想找出它们

$role = Role::with('permission')->whereId($id)->first();
$permissions = Permission::all();
dd($role,$role->permission());

输出为：

App\Entities\Role {#1816 ▼
  ...
  #relations: array:1 [▼
    "permission" => Illuminate\Database\Eloquent\Collection {#1814 ▼
      #items: array:2 [▼
        0 => App\Entities\Permission {#1829 ▼
          ...
          #attributes: array:5 [▼
            "id" => 4
            "name" => "create-comment"
            "label" => "user can create a comment"
            ...
          ]
          ...
        }
        1 => App\Entities\Permission {#1826 ▶}
      ]
    }
  ]
  ...
}

Illuminate\Database\Eloquent\Collection {#1812 ▼
  #items: array:3 [▼
    0 => App\Entities\Permission {#1820 ▼
      ...
      #attributes: array:5 [▼
        "id" => 4
        "name" => "create-comment"
        "label" => "user can create a comment"
        ...
      ]
      ...
    }
    1 => App\Entities\Permission {#1828 ▶}
    2 => App\Entities\Permission {#1827 ▶}
  ]
}

你可以看到"create-comment"权限在角色的权限中，我怎么才能找到它们呢？

例如：

$role = Role::with('permission')->whereId($id)->first();
$permissions = Permission::get();

dd($role->hasPermission($permissions));


class Role extends Model
{
    ...
    public function hasPermission($permission)
    {
        //return which permissions are in role
    }
}

或者使用contains

@foreach($permissions as $permission)
    <option value="{{$permission->id}}" @if($role->permission->contains('id',$permission->id)) selected="selected"  @else '' @endif>
        {{$permission->name}} {{$permission->label}}
    </option>
@endforeach

Answer 1

下面这段Blade代码解决了我的问题：

@foreach($permissions as $permission)
    <option value="{{$permission->id}}" @if($role->permission->contains('id',$permission->id)) selected="selected"  @else '' @endif>
        {{$permission->name}} <span class="text-danger">({{$permission->label}})</span>
    </option>
@endforeach