Laravel 5.5 BelongsToMany与枢轴条件

Question

我有三个型号， Clinic ， Department和ClinicDepartment并具有belongsToMany关系称为departments从Clinic到Department使用ClinicDepartment的表作为数据透视表，但在使用这种关系我，范围从ClinicDepartment没有查询aplying。

我决定制作调用ClinicDepartmentPivot Pivot模型，并将这些范围应用于Pivot，但是没有运气。

诊所模式：

class Clinic extends Model
{
    use SoftDeletes, ActiveOnly, HasParent;

    public function departments()
    {
        return $this->belongsToMany(Department::class, 'clinic_departments', 'clinic_id', 'department_id')->using(ClinicDepartmentPivot::class);
    }
}

部门型号：

class Department extends Model
{
    use SoftDeletes, ActiveOnly;

    public function clinics()
    {
        return $this->belongsToMany(Clinic::class, 'clinic_departments', 'department_id', 'clinic_id')->using(ClinicDepartmentPivot::class);
    }
}

ClinicDepartmentPivot模型：

class ClinicDepartmentPivot extends Pivot
{
    use ActiveOnly, SoftDeletes;
}

ActiveOnlyScope：

class ActiveOnlyScope implements Scope
{
    public function apply(Builder $builder, Model $model)
    {
        $builder->where($model->getTable() . '.is_active', true);
    }
}

因此，基本上我想将全局范围应用于Pivot模型，因此当我尝试获取Department Clinics时，应检查-ClinicDepartment是否具有is_active = 1且未删除。

UPD 1

我的范围特征如下所示：

trait ActiveOnly
{
    public static function bootActiveOnly()
    {
        if (!Auth::guard('admin')->check() && strpos(request()->getRequestUri(), 'admin') === false) {
            static::addGlobalScope(new ActiveOnlyScope);
        }
    }
}

可以被任何型号使用。

Answer 1

您在这里缺少了一些东西：

要将全局范围分配给模型，应覆盖给定模型的引导方法，并使用addGlobalScope方法

Laravel关于范围的文档

您的模型应如下所示：

class Clinic extends Model
{
    use SoftDeletes, ActiveOnly, HasParent;

    protected static function boot()
    {
        parent::boot();

        static::addGlobalScope(new ActiveOnlyScope);
    }

    public function departments()
    {
        return $this->belongsToMany(Department::class, 'clinic_departments', 'clinic_id', 'department_id')->using(ClinicDepartmentPivot::class);
    }
}



class Department extends Model
{
    use SoftDeletes, ActiveOnly;

    protected static function boot()
    {
        parent::boot();

        static::addGlobalScope(new ActiveOnlyScope);
    }

    public function clinics()
    {
        return $this->belongsToMany(Clinic::class, 'clinic_departments', 'department_id', 'clinic_id')->using(ClinicDepartmentPivot::class);
    }
}

Answer 2

好吧，有了一些解决方法，我终于找到了看起来不那么草率的工作解决方案）

public function clinics()
    {
        return $this->belongsToMany(Clinic::class, 'clinic_departments', 'department_id', 'clinic_id')
            ->where(function (Builder $query) {
                $query->where('clinic_departments.is_active', 1)
                    ->whereNull('clinic_departments.deleted_at');
            });
    }

实际查询如下所示：

select `clinics`.*, `clinic_departments`.`department_id` as `pivot_department_id`, `clinic_departments`.`clinic_id` as `pivot_clinic_id` from `clinics` inner join `clinic_departments` on `clinics`.`id` = `clinic_departments`.`clinic_id` where (`clinic_departments`.`is_active` = 1 and `clinic_departments`.`deleted_at` is null)

谢谢大家的想法。