belongsTo(Position::class, 'storage_position_id', 'id'); } public function sample() { return $this->belongsTo(PathogenInventorySample::class, 'sample_id', 'id'); } public function containerType() { return $this->belongsTo(ContainerType::class, 'container_type_id', 'id'); } public function movements() { return $this->hasMany(AliqoutMovement::class, 'aliquot_id', 'id'); } public function transactions() { return $this->hasMany(AliquotTransaction::class, 'aliquot_id', 'id'); } }