您可以使用雄辩的关系.您在问题中描述的是一个一对多关系，表示一个部门可以有许多用户，并且每个用户都属于一个部门.因此，您需要为departments表设置模型(如果尚未设置)，然后在User模型中定义关系，如下所示:

You can use Eloquent Relationships. What you described in your question is a One-to-Many Relation, meaning a department can have many users, and each user belongs to a department. So you'll need to setup a model for your departments table (if you haven't done so already) and then define the relationship in your User model like so:

class User extends Model
{
    public function department()
    {
        return $this->belongsTo('App\Department', 'departmentId');
    }
}

然后您可以通过该关系访问视图中的部门详细信息:

You can then access the department details in your view via that relationship:

@foreach ($users as $user)
    {{ $user->department->departmentName }}
@endforeach