Middleware For actions into Controller, Laravel 5.1 - php

Question

I have a Controller that have a index method, but also have a multiple levels of users that have access to this method, but single the admin can view all records of the database How can i add a middleware for select the action corresponding to user? I have the next code
<?php
namespace SET\Http\Controllers;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Session;
use Illuminate\Support\Facades\Redirect;
use SET\Http\Requests;
use SET\Http\Requests\LabRequest;
use SET\Http\Controllers\Controller;
use Illuminate\Routing\Route;
use SET\Lab;
use Validator;
use Auth;
use DB;
class LaboratorioController extends Controller
{
public function __construct(){
$this->beforeFilter('#find', ['only' => ['show','edit','update','destroy']]);
}
public function find(Route $route){
$this->laboratorio = Lab::findOrFail($route->getParameter('laboratorio'));
}
/**
* Display a listing of the resource.
*
* #return Response
*/
public function index()
{
$labs = Lab::all();
return view('comp.lab.index',['labs' => $labs]);
}
/**
* Show the form for creating a new resource.
*
* #return Response
*/
public function create()
{
return view('comp.lab.create');
}
/**
* Store a newly created resource in storage.
*
* #return Response
*/
public function store(LabRequest $request)
{ Lab::create($request->all());
Session::flash('message','Laboratorio creado correctamente');
return Redirect::to('/laboratorio');
}
/**
* Display the specified resource.
*
* #param int $id
* #return Response
*/
public function show()
{
$teams = $this->laboratorio;
return view('comp.lab.show',['lab'=>$this->laboratorio]);
}
/**
* Show the form for editing the specified resource.
*
* #param int $id
* #return Response
*/
public function edit()
{
return view('comp.lab.edit',['lab'=>$this->laboratorio]);
}
/**
* Update the specified resource in storage.
*
* #param int $id
* #return Response
*/
public function update(LabRequest $request)
{
$this->laboratorio->update($request->all());
Session::flash('message','El laboratorio se actualizo correctamente');
return Redirect::to('/laboratorio');
}
/**
* Remove the specified resource from storage.
*
* #param int $id
* #return Response
*/
public function destroy()
{
$this->laboratorio->delete();
Session::flash('message','El laboratorio fue eliminado correctamente');
return Redirect::to('/laboratorio');
}
Thanks :D

Answer 1

Here's a general idea:
$user_group = $user::get_user_group($user_id)
if($user_group->group_id === 'something'){
\\method to return data for group 'something'
}
Get data by groups
$user_data = $user::get_data_by_group_id($group_id)