Laravel 可选 WHERE 子句

Question

有没有办法在 Laravel 中实现可选的 WHERE，这是我的查询

$people = \App\people::query()
        -> select ('people.name', 'people.username', 'price', 'service','people.city', 'people.streetaddress', 'people.postalcode', DB::raw("GROUP_CONCAT(DATE_FORMAT(datetime, '%H:%i')) as times"))
        -> groupBy('people') 
        -> leftjoin ('services' , 'people.id', '=', 'services.people_id')
        -> leftjoin ('imagesforpeople' , 'people.id', '=', 'imagesforpeople.people_id')
        -> whereDate ('datetime', '=', $request->get('date'))
        -> whereTime ('datetime', '=', $request->get('time'))
        -> get();

在这里，我希望这一行是可选的

-> whereTime ('datetime', '=', $request->get('time'))

因此，如果搜索不包含时间，它将完全忽略这行查询。

whereDate 是必需的，但 whereTime 不是必需的。如果获取到时间请求，则查询时间，如果未获取到时间请求，则忽略whereTime查询，只显示whereDate的结果。

如何在 Laravel 中实现此目的？

Answer 1

您可以使用'when'方法。在这里阅读它：https://laravel.com/docs/5.5/queries#conditional-clauses

$people = \App\people::query()
            -> select ('people.name', 'people.username', 'price', 'service','people.city', 'people.streetaddress', 'people.postalcode', DB::raw("GROUP_CONCAT(DATE_FORMAT(datetime, '%H:%i')) as times"))
            -> groupBy('people') 
            -> leftjoin ('services' , 'people.id', '=', 'services.people_id')
            -> leftjoin ('imagesforpeople' , 'people.id', '=', 'imagesforpeople.people_id')
            -> whereDate ('datetime', '=', $request->get('date'))
            -> when($request->get('time'), function($query) use($request) { 
                 $query->where('datetime', '=', $request->get('time')
             })-> get();

Answer 2

简单的做法是：

$peopleQuery = \App\people::query()
    ->select('people.name', 'people.username', 'price', 'service','people.city', 'people.streetaddress', 'people.postalcode', DB::raw("GROUP_CONCAT(DATE_FORMAT(datetime, '%H:%i')) as times"))
    ->groupBy('people') 
    ->leftjoin('services', 'people.id', '=', 'services.people_id')
    ->leftjoin('imagesforpeople', 'people.id', '=', 'imagesforpeople.people_id')
    ->whereDate('datetime', '=', $request->get('date'));

if ($request->has("time")) {
    $peopleQuery->whereTime('datetime', '=', $request->get('time'));
}

$people = $peopleQuery->get();

Answer 3

根据https://laravel.com/docs/5.3/queries#conditional-clauses

->when($request->get('time'), function($query) use ($request) {
     $query->whereTime('datetime', '=', $request->get('time')); 
})

Laravel 可选 WHERE 子句

Laravel Optional WHERE clause

php

mysql

laravel

laravel-5.3