Question

我有3个下拉菜单，用于从数据库中过滤列表中的申请人数据但是当我使用第二个过滤器进行过滤时，第一个过滤器会将其重置。我想做过滤器记录第一个过滤器，然后移动到第二个过滤器而不重置它。然后应用过滤器以获取数据

这是我第一次使用laravel及其内部的所有内容。如果有人有办法解决这个问题，我真的非常感谢您我真的很感激。

这是控制器

public function index()
{
    $branches = \App\Branch::all();
    $batches = \App\Batch::all();
    $users = \App\User::all();
    $user_details = \App\UserDetail::all();

    $applicant_info = DB::table('applicants')
    ->join('user_details', 'applicants.fk_user_details_id', '=', 'user_details.user_detail_id')
    ->join('users', 'users.id', '=', 'user_details.fk_users_id')
    ->join('batches', 'applicants.fk_batches_id', '=', 'batches.batches_id')
    ->join('branches', 'applicants.fk_branches_id', '=', 'branches.branches_id')
    ->select('applicants.*', 'user_details.*', 'branches.*', 'batches.*', 'users.*')
    ->orderBy('applicants_id', 'asc');

    if(request()->has('country')){
        $applicant_info = $applicant_info->where('applicants.applicant_country', request('country'));
    }

    if(request()->has('branch')){
        $applicant_info = $applicant_info->where('branches.branch_name', request('branch'));
    }

    if(request()->has('batch')){
        $applicant_info = $applicant_info->where('batches.batch_name', request('batch'));
    }


    $applicant_info = $applicant_info->get();

    // $applicants = $applicants->paginate(5)->appends(['country' => request('country')]);

    $branch = \App\Branch::orderBy('branch_name')->pluck('branch_name')->unique();

    $batch = \App\Batch::orderBy('batch_name')->pluck('batch_name')->unique();

    $countries = \App\Applicant::orderBy('applicant_country')->pluck('applicant_country')->unique();


    return view('backend.applicant_management.applicant_list', ['applicant_info'=>$applicant_info, 'branches'=>$branches, 'batches'=>$batches, 'users'=>$users, 'countries'=>$countries, 'branch'=>$branch, 'batch'=>$batch]);

}

这是view.blade

<div class="pull-right">
   <div class="btn-group">
      <button data-toggle="dropdown" class="btn btn-default dropdown-toggle" type="button" aria-expanded="false">Branch Name<span class="caret"></span>
      </button>
      <ul role="menu" class="dropdown-menu" name="branch">
         <li><a href="/applicant_list">All Branch</a>
            @foreach($branch as $branch)
         <li><a id="filterbranch" href="/applicant_list/?branch={{ $branch }}"> {{ $branch }}</a></li>
         @endforeach
      </ul>
   </div>
   <div class="btn-group">
      <button data-toggle="dropdown" class="btn btn-default dropdown-toggle" type="button" aria-expanded="false">Batch Number<span class="caret"></span>
      </button>
      <ul role="menu" class="dropdown-menu" name="batch">
         <li><a href="/applicant_list">All Batch</a>
            @foreach($batch as $batch)
         <li><a href="/applicant_list/?batch={{ $batch }}"> {{ $batch }}</a></li>
         @endforeach
      </ul>
   </div>
   <div class="btn-group">
      <button data-toggle="dropdown" class="btn btn-default dropdown-toggle" type="button" aria-expanded="false">Country<span class="caret"></span>
      </button>
      <ul role="menu" class="dropdown-menu" name="country">
         <li><a href="/applicant_list">All Country</a></li>
         @foreach($countries as $country)
         <li><a href="/applicant_list/?country={{ $country }}"> {{ $country }}</a></li>
         @endforeach
      </ul>
   </div>
</div>

Laravel 5.5，使用3个下拉按钮过滤器而无需重置第一个和第二个过滤器

0 个答案: