可选的Laravel

Question

鉴于我有一个简单的连接查询：

$googleAds = TrackingApi::where("company_id",$companyId)
                         ->leftJoin("googleads",function($join) use ($date){

                       $join->on("tracking_api.google_id", "googleads.id")
                            ->where("googleads.created", "<=", $date
                            })
                         ->select(DB::raw('count(googleads.id) as totalAds'))->get();

从管理仪表板发出的数据参数，但是它的可选参数。

问题：如果$date没有给出，我该怎么办？

澄清：当$date没有给出时，只是正常执行查询。

Answer 1

您可以使用when方法：

$googleAds = TrackingApi::where("company_id",$companyId)
     ->leftJoin("googleads",function($join) use ($date){
         $join->on("tracking_api.google_id", "googleads.id")
              ->when($date, function ($query) use ($date) {
                  return $query->where("googleads.created", "<=", $date
              })
     })
     ->select(DB::raw('count(googleads.id) as totalAds'))->get();

Answer 2

作为替代方案：

$googleAds = TrackingApi::where("company_id", $companyId)
     ->leftJoin("googleads",function($join) use ($date){    
         $join->on("tracking_api.google_id", "=", "googleads.id");
         if (!empty($date)) 
            $join->where("googleads.created", "<=", $date);
      });                
     ->select(DB::raw('count(googleads.id) as totalAds'))
     ->get();

Answer 3

@ user320487的答案是正确的，但是，您也可以在方法中传递第二个参数，而不是在闭包器中使用“ use”关键字，因为这将是更具可读性和可维护性的代码。

$googleAds =
    TrackingApi::whereCompany_id($companyId)
        ->leftJoin("googleads", function ($join) use ($date) {
            $join->on("tracking_api.google_id", "googleads.id")
                ->when($date, function ($query, $date) {
                    return $query->where("googleads.created", "<=", $date);
                });
        })
        ->select(DB::raw('count(googleads.id) as totalAds'))
        ->get();