Question

Laravel条件查询不会按预期返回结果我在条件为真时添加 whereIn 子句。如果我删除if语句然后它的返回结果按预期但在将此条件子句添加到查询

时不起作用

这是我的代码：

<img src="https://cloud.netlifyusercontent.com/assets/344dbf88-fdf9-42bb-adb4-46f01eedd629/68dd54ca-60cf-4ef7-898b-26d7cbe48ec7/10-dithering-opt.jpg" alt="Mountain View" width="500" height="377">
<img src="https://i2.wp.com/beebom.com/wp-content/uploads/2016/01/Reverse-Image-Search-Engines-Apps-And-Its-Uses-2016.jpg?resize=640%2C426" alt="Mountain View" width="500" height="377">

这是查询日志

$cf = $request->session()->get('filter');


    $designs = DB::table('designs');
    $count   = DB::table('designs');

    $appFilters = $request->session()->get('filter');


    if($request->session()->has('filter')){ 

        $stringFilter = $this->filterIntToString($appFilters);

        $fid =  array_unique($this->fillterSearchEngine($appFilters));

        $designs->whereIn('fid', $fid);
        $count->whereIn('fid', $fid);


    }

    $stringFilter = [];

    $sizeFilters = $request->session()->get('filSize');
    $nsf = [];
    foreach ($sizeFilters as $str) {
        $str = str_replace('-', ',', $str);
        array_push($nsf, $str);
    }



    $designs->orderBy('created_at', 'desc');
    $designs->whereIn('o_size', $nsf);
    $designs->where('cat', $c);
    $designs->where('sub', $s);
    $designs->take(16);

    $results = $designs->get();
    $count->whereIn('o_size', $sizeFilters)->where('cat', $c)->where('sub', $s);
    $counts = $designs->count();
    $html = view('app-pages.designs-filter-ajax')->with('stringFilter', $stringFilter)->with('appFilter', $appFilters)->with('designs', $results)->render();

    return ['success', $html, $counts, count($results)];

Answer 1

首先检查使用var_dump在$ appFilters中获取数据的天气，如果不是从会话中获取变量的错误

Laravel条件查询不起作用

1 个答案: