选择选项，返回重复项

Question

我试图得到一个旧的选定值，并在选择选项中显示它，以及一个非选定的值，但是，当我尝试比较然后它看起来没有工作，到目前为止，我只能得到重复。实施它的最佳方法是什么？

这就是我的代码的样子。

控制器：

public function index()
{
    $roles = Role::get();
    $permissions = Permission::get();

    return view('role.index', compact(['roles','permissions']));

}

角色视图：

@foreach($role->permission as $permissioninrole)
    <option name="permissions[]" {{ old('name', $permissioninrole->name) == $permissioninrole->name ? 'selected' : '' }} value="{{$permissioninrole->id}}">{{$permissioninrole->name}}</option>
@endforeach

@isset($permissioninrole)
    @foreach($permissions as $permission)
        @if($permissioninrole->name != $permission->name)
            <option class="rem" name="permissions[]" value="{{$permission->id}}">{{$permission->name}}</option>
        @endif
    @endforeach
@endisset

@empty($permissioninrole)
    @foreach($permissions as $permission)
        <option name="permissions[]" value="{{$permission->id}}">{{$permission->name}}</option>
    @endforeach
@endempty

看起来如何。 HTML

<option name="permissions[]" selected value="15">role-create</option>
<option name="permissions[]" selected value="16">role-read</option>
<option name="permissions[]" value="15">role-create</option>
<option name="permissions[]" value="16">role-read</option>
...

如果角色'x'具有权限角色创建，应该如何。

<option name="permissions[]" selected value="15">role-create</option>
<option name="permissions[]" value="16">role-read</option>
...

Answer 1

解

@foreach($permissions as $key => $value)
    <option name="permissions[]" {{ in_array($key +1, $role->permission()->pluck('id')->toArray()) ? 'selected' : '' }} value="{{$value->id}}">{{ $value->name }}</option>
@endforeach