如何在Laravel中雄辩地获取每天,每周,每月和每年的同一记录的最新更新值?

时间:2018-09-17 11:54:07

标签: mysql eloquent laravel-5.6

这是我的product_price表: product price table 请注意,product_id 1在同一天多次更新。 这是我当前的查询:

$product = ProductPriceModel::where(['product_id' => $request->product_id])->distinct()->latest()->get()->groupBy(function ($date) {
                    return Carbon::parse($date->created_at)->format('Y-m-d');
                });

这给了我这个结果:

"data": {
    "productDetails": {
        "2018-09-17": [
            {
                "min_price": 0,
                "max_price": 1150,
                "price_diff": "425"
            },
            {
                "min_price": 100,
                "max_price": 200,
                "price_diff": "-945"
            }
        ],
        "2018-09-10": [
            {
                "min_price": 1070,
                "max_price": 1120,
                "price_diff": "-30"
            },
            {
                "min_price": 1100,
                "max_price": 1150,
                "price_diff": "15"
            },
            {
                "min_price": 1080,
                "max_price": 1140,
                "price_diff": "0"
            }
        ]
    }
}

我希望它返回的每个日期只有一条记录。 在上述查询中需要进行哪些更改才能使每个日期获得一条准确的记录?

1 个答案:

答案 0 :(得分:0)

如果您只想获取一条记录,则需要使用first()代替get(),请尝试一下

$product = ProductPriceModel::where(['product_id' => $request->product_id])->distinct()->latest()->first()->groupBy(function ($date) {
                    return Carbon::parse($date->created_at)->format('Y-m-d');
                });