belongsTo(CorporateService::class, 'corporate_service_id'); } public function corporate() { return $this->hasOneThrough(Corporate::class, CorporateService::class); } public function speciality() { return $this->belongsTo(Speciality::class, 'speciality_id'); } public function exclusions() { return $this->morphMany(Exclusion::class, 'exclusionable'); } }