Laravel 5.4: How do I redirect back to correct page when I have 3 post pages using the same url?

I want to keep the same url across 3 pages that have POST forms. When a form fails validation i'm doing \Redirect::back()->withErrors() but if i'm on the second page it's returning to the 1st page. How can I return to the 2nd page instead of the 1st?

My routes are:

Route::post("/test",['as'=>'test','uses'=>'TestController@post']);
Route::get("/test",function(){ return View::make("pages.test"); });

My controller is:

class TestController extends Controller
{

function post(Request $request){
    if($request->has("test1")){
        return view('/pages/test2');
    }elseif($request->has("test2")){
        return \Redirect::back()->withErrors(["my error"]);
    }else{
        return "unknown test";
    }
}

}

My blade files are test.blade.php:

Test1

test2.blade.php :

test2

When return \Redirect::back()->withErrors(["my error"]); executes i'm expecting to return to test2.blade.php but i'm returning to test.blade.php. How can I fix this?

via Chebli Mohamed