belongsTo(Auftraggeber::class); } public function gutachter() { return $this->belongsTo(Gutachter::class); } public function allgemeinflaechens() { return $this->hasMany(Allgemeinflaechen::class); } public function raeumealles() { return $this->hasMany(Raeumealle::class); } public function projekt_methodes() { return $this->hasMany(ProjektMethode::class); } }