belongsTo(datakriteria::class, 'id_subkriteria'); } public function alternatif() { return $this->hasOne(Alternatif::class, 'id_penduduk'); } public function alternatifs():BelongsTo{ return $this->belongsTo(alternatif::class, 'id_penduduk'); } public function rangking() { return $this->hasOne(Rangking::class, 'kode', 'kode'); } }