如何在Laravel eloquent中获取每天,每周,每月和每年相同记录的最新更新值?

问题描述 投票:0回答:1

这是我的product_price表:product price table请注意,product_id 1在同一天更新了多次。这是我目前的查询:

$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"
            }
        ]
    }
}

我期望它返回的只是每个日期的一条记录。在上面的查询中需要做哪些更改才能获得每个日期的一条记录?

mysql eloquent laravel-5.6
1个回答
0
投票

如果你想只获得一条记录,你需要使用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');
                });
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