'integer', 'update_time' => 'integer', 'points_cost' => 'integer', 'amount' => 'float', 'multiplier' => 'integer', 'retry_count' => 'integer', ]; public function mallItem(): \think\model\relation\BelongsTo { return $this->belongsTo(MallItem::class, 'mall_item_id', 'id'); } }