问题描述

我目前用laravel，数据库查询出来是对象，每次还得转成数组, 而且没有批量更新功能

提问

laravel有同时自增自减的Db::功能吗?

//+1
Db::table('options')->where('id', $option_id)->increment('num', 1);
//-1
Db::table('options')->where('id', $option_id)->decrement('user_num', 1);

这种得写两次, 想一次性更新自增和自减

laravel ORM好还是TP ORM好呢? 从查询效率上来比较

批量更新

public function updateBatch($tableName, $multipleData = [])
    {
        try {
            if (empty($multipleData)) {
                throw new \Exception("数据不能为空");
            }
            $firstRow     = current($multipleData);
            $updateColumn = array_keys($firstRow);
            // 默认以id为条件更新，如果没有ID则以第一个字段为条件
            $referenceColumn = isset($firstRow['id']) ? 'id' : current($updateColumn);
            unset($updateColumn[0]);
            // 拼接sql语句
            $updateSql = "UPDATE " . $tableName . " SET ";
            $sets      = [];
            $bindings  = [];
            foreach ($updateColumn as $uColumn) {
                $setSql = "`" . $uColumn . "` = CASE ";
                foreach ($multipleData as $data) {
                    $setSql .= "WHEN `" . $referenceColumn . "` = ? THEN ? ";
                    $bindings[] = $data[$referenceColumn];
                    $bindings[] = $data[$uColumn];
                }
                $setSql .= "ELSE `" . $uColumn . "` END ";
                $sets[] = $setSql;
            }
            $updateSql .= implode(', ', $sets);
            $whereIn   = collect($multipleData)->pluck($referenceColumn)->values()->all();
            $bindings  = array_merge($bindings, $whereIn);
            $whereIn   = rtrim(str_repeat('?,', count($whereIn)), ',');
            $updateSql = rtrim($updateSql, ", ") . " WHERE `" . $referenceColumn . "` IN (" . $whereIn . ")";
            // 传入预处理sql语句和对应绑定数据
            return Db::update($updateSql, $bindings);
        } catch (\Exception $e) {
            return false;
        }
    }