jucai/app/Http/Controllers/Statistics/CommonController.php

<?php
namespace App\Http\Controllers\Statistics;
use App\Http\Controllers\Statistics\StatisticsBaseController;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Cache;


class CommonController extends StatisticsBaseController
{
    public function changeSubsite(Request $request)
    {
        $sid = $request->input('sid');
        session(['caiqing_susbite_id' => $sid]);
        return redirect(url(\Illuminate\Support\Facades\URL::previous()));
    }
}