Question

我是Laravel的新手，我需要通过获取类似sql以下的结果来进行laravel查询。

SQL

select * from `tb_project_participate` 
where 
    `project_id` = 20 and 
    `department_id` = 1 and 
    (
        month(`created_at`) = 10 or 
        (month(`created_at`) = 11) or 
        (month(`created_at`) = 12)
    )

下面是我使用的Laravel代码。

$participate = ProjectParticipate::where('project_id' , $project->project_id)
            ->where('department_id', $auth->department_id)
            ->whereMonth('created_at' , 10)
            ->orWhere(function($query){$query->whereMonth('created_at',11); })
            ->orWhere(function($query1){$query1->whereMonth('created_at',12); })
            ->get();

我得到的结果如下，这不是我想要的查询。 SQL

select * from `tb_project_participate` 
where 
    `project_id` = 20 and 
    `department_id` = 1 and 
    month(`created_at`) = 10 or 
    (month(`created_at`) = 11) or 
    (month(`created_at`) = 12)

感谢有关如何编写Laravel查询以获取结果的建议，对不起，我的英语。非常感谢。

Answer 1

尝试类似

 $participate = ProjectParticipate::where('project_id' , $project->project_id)
                ->where('department_id', $auth->department_id)
                ->whereRaw('month(created_at) in (10,11,12))
                ->get()

或者您也可以这样做

$participate = ProjectParticipate::where('project_id' , $project->project_id)
                ->where('department_id', $auth->department_id)
                ->whereIn(DB::raw('month(created_at)'),[10,11,12])
                ->get()

Answer 2

请首先搜索它。我认为这个问题在stackoverflow上已经回答了数十次，在网络上已经回答了数百次。

尝试一下：

$participate = ProjectParticipate::where('project_id' , $project->project_id)
                                ->where('department_id', $auth->department_id)
                                ->where(function($query){
                                $query->whereMonth('created_at' , 10);
                                $query->orWhere(function($query2){
                                   $query2->whereMonth('created_at',11); });
                                $query->orWhere(function($query1){
                                   $query1->whereMonth('created_at',12); });
                                })->get();

或者这个（推荐）：

我们尝试使代码尽可能通用，因此我希望将月份作为参数。对于$ auth也没有真正的理由，因为这是一个额外的操作：$ auth = \ Auth :: user（）。只需使用\ Auth :: user（）

$participate = ProjectParticipate::where('project_id' , $project->project_id)
                                   ->where('department_id', \Auth::user()->department_id)
                                   ->where(DB::RAW('month(created_at)'), $months)
                                   ->get();

其中$ months是此数组：[10,11,12]

基本上，我们有一个查询，其中添加了所有or语句。检查手册以供参考。您没有提到该版本，但是最近3年没有做太多更改，因此这里是最新版本：https://laravel.com/docs/5.7/queries#parameter-grouping

如何查询laravel中的多个whereMonth或哪里查询laravel

2 个答案: