'required', 'type' => ['bail', 'required', 'in:numeric,categorical'] ], $tipe = ['numeric' => 'Numerik', 'categorical' => 'Kategorikal']; public function nilai_atribut() { return $this->hasOne(NilaiAtribut::class, 'atribut_id'); } public function probability() { return $this->hasOne(Probability::class, 'atribut_id'); } }