mysql - Laravel 如何通过在模型中传递属性来显示行

Question

我试图根据学生表中名为“stn”的属性为我的学生显示对象。当我使用主键时，我能够显示它，但是当使用属性时，该函数不返回任何内容，而当它用于返回对象时。

@foreach($users as $user)

    @foreach($user->contactlogs as $logs)

        {{ $logs->students }}

    @endforeach

@endforeach

这用于显示学生对象，现在它没有任何内容，这些是我的模型

class ContactLog extends Model
{

    protected $table = 'contactlogs';

    public function users()
    {
        return $this->belongsTo(User::class, 'id');
    }
    public function students()
    {
        return $this->belongsTo(Student::Class);
    }

}

<小时/>

class Student extends Model
{

    protected $table = 'students';

    public function user()
    {
        return $this->belongsTo(User::class);
    }

    public function contactlogs()
    {
        return $this->hasMany(ContactLog::class);
    }

}

Answer 1

在你的 Controller 中你必须有这样的东西:

public function yourAction(){
    $users = ContactLog::with('users', 'students')->get();
    return view('your.view' , compact('users'));
}

那么在你看来你必须这样做:

@foreach($users as $user)
{{ $user->users->name }}
{{ $user->students->name }}
@endforeach

您也可以为学生做同样的事情:

public function yourAction(){
     $students = Student::with('users', 'contactlogs')->get();
      return view('your.view' , compact('students'));
 }

与您的 View 相同

@foreach($students as $student)
    {{ $student->users->attr }} //attr is the attribute from users
    {{ $student->contactlogs->attr }}// attr is the attribute from contaclogs
@endforeach