Laravel 5雄辩 - 将子领域添加到父型模型中

Question

我有一个用户模型，该模型具有一个名为"老师"的儿童关系。如何将一个从相关的教师模型添加到返回的数据集的字段？

我希望用户模型返回以具有以下结构：

user.firstname

user.lastname

user.teacher.address

我尝试使用以下及其变化，但没有成功：

            $query->select('firstname', 'lastname')
            ->addSelect( DB::raw('teachers.address AS address') );

user.php型号：

    use Notifiable;
use SoftDeletes;
use EncryptableTrait;
/**
 * The attributes that are mass assignable.
 *
 * @var array
 */
protected $fillable = [
   'title',
   'firstname',
   'firstname_h',
   'lastname',
   'lastname_h',
   'email',
   'email_h',
   'password',
   'userable_id',
   'userable_type'
];
/**
 * The attributes that are mass encryptable, using the EncryptableTrait.
 *
 * @var array
 */
protected $encryptable = [
    'firstname',
    'lastname',
    'email',
];
/**
 * The attributes that should be hidden for arrays.
 *
 * @var array
 */
protected $hidden = [
    'password', 'remember_token',
];
public function userable()
{
    return $this->morphTo();
}
public function teacher() // Using custom BelongsToMorph relationship type
{
    return BelongsToMorph::build($this, Teacher::class, 'userable');
}
public function roles()
{
    return $this->belongsToMany('AppRole')->withTimestamps();
}
public function schools()
{
    return $this->belongsToMany('AppSchool')->withPivot('suspended', 'rating');
}
public function thisSchool()
{
    return $this->belongsToMany('AppSchool')->where('school_id', Auth::user()->userable->id)->withPivot('id', 'suspended', 'rating', 'notes');
}
public function addRole($user, $role_id)
{
    $user->roles()->attach($role_id);
}
public function removeRole($user, $role_id)
{
    $user->roles()->detach($role_id);
}
public function isAdmin($user)
{
    foreach ($user->roles as $role) {
        if($role->id == 4) {
            return true;
        } else {
            $return = false;
        }
    }
    return $return;
}
public function isSchoolAdmin($user)
{
    foreach ($user->roles as $role) {
        if($role->id == 2) {
            return true;
        } else {
            $return = false;
        }
    }
    return $return;
}
public function events()
{
    return $this->belongsToMany('AppEvent')->withPivot('cancelled', 'cancelled_by');
}
public function devices()
{
    return $this->hasMany('AppDevice');
}
public function teachingstages()
{
    return $this->belongsToMany('AppTeachingstage', 'teacher_teachingstage')->orderBy('teachingstage_id');
}
public function teachingsubjects()
{
    return $this->belongsToMany('AppTeachingsubject', 'teacher_teachingsubject');
}

老师。php型号：

    use EncryptableTrait;
protected $table = "teachers";
/**
 * The attributes that are mass assignable.
 *
 * @var array
 */
protected $fillable = [
   'mobile',
   'dob',
   'gender',
   'address',
   'postcode',
   'latitude',
   'longitude',
   'max_distance',
   'public',
   'photo',
   'experience',
   'active',
   'verified',
   'payscale',
   'ta_number',
   'temp_or_perm',
   'locked'
];
/**
 * The attributes that are mass encryptable, using the EncryptableTrait.
 *
 * @var array
 */
protected $encryptable = [
    'mobile',
    'address',
    'postcode',
    'experience',
    'ta_number'
];
public function user()
{
    return $this->morphOne('AppUser', 'userable');
}
public function criterias()
{
    return $this->hasMany('AppCriteria');
}
public function bookingrequests()
{
    return $this->belongsToMany('AppBookingrequest')->withPivot('sent', 'sent_at', 'declined', 'created_at', 'updated_at');
}
public function blacklist()
{
    return $this->hasMany('AppBlacklist');
}

这是我现有的查询：

        $query = User::where('userable_type', 'AppTeacher');
        $query->with('userable');
        $query->select('firstname', 'lastname')
            ->addSelect( DB::raw('teachers.address AS address') );
        $query->whereDoesntHave('thisSchool');
        $otherTeachers = $query->get();

这是一个现有的应用程序，一切都按预期工作；我的问题更多是关于如何添加子模型列作为父模型的别名(然后我将使用新的别名列来计算某些内容(。

预先感谢

k ...

Answer 1

好吧，我自己最终解决了这个问题。

我在用户模型中添加了一个范围：

    public function scopeJoinWithTeacher($query)
{
    return $query->leftJoin("teachers", "teachers.id", "=", "users.userable_id");
}

然后，我在我的查询中实现了这个新范围，并在get((中从子到父型模型的列列列：

    $query = User::where('userable_type', 'AppTeacher');
    $query->with('userable');
    $query->whereDoesntHave('thisSchool');
    $query->JoinWithTeacher();
    $query->orderBy( 'distance', 'ASC' );
    $otherTeachers = $query->get(['teachers.longitude AS longitude', 'teachers.latitude AS latitude', 'users.*']);

我现在拥有从雄辩的父母模型中的教师孩子关系中的经度和纬度列。在我的具体情况下，我进一步使用这些别名字段来计算距离，并在用户模型中创建一个称为距离的新别名。

希望可以帮助尝试同一件事的人！

k ...