我可以在laravel雄辩的where子句中放入一个集合或数组吗？

Question

$collection=["c","a","f","h","j","o","k"]

$total_sums=Models::select('count')->whereIn('class',['c','a','f','h','j','o','k'])
                    ->get()
                    ->sum('count');

我可以这样使用变量$ collection吗？

$total_sums=Models::select('count')->whereIn('class',[''.$collection.''])
                    ->get()
                    ->sum('count');

Answer 1

您可以同时使用。

whereIn()接受Array和Collection。 您只需将其作为第二个参数传递即可。

$array = ["c","a","f","h","j","o","k"];
$collection = collect($array);

$total_sums=Models::select('count')->whereIn('class', $array)
            ->get()
            ->sum('count');

// works

$total_sums=Models::select('count')->whereIn('class', $collection)
            ->get()
            ->sum('count');

// also works!

Answer 2

否，因为$collection已经是一个数组。当您尝试将其连接为字符串时，我相信您的查询将如下所示...

select count from models where class in ('Array');

您可能真正想做的是...

->whereIn('class', $collection)