Okay after get almost every thing work in my code
and its pretty Good
i need help about how to validate the user url Input
and if he did insert a non Url how to foreword it to 404 page
and here is my Route file
Route::get('/', function()
{
    return  View::make('hello');    
}); 
Route::post('/', function()
{
$url = Input::get('url');
$record = Url::where('urls', '=', $url)->first();
if ($record) {
    return View::make('result')
    ->with('shortend', $record->shortend);
}
function get_uniqe_short_url()
{
    $shortend = base_convert(rand(1000,99999), 10, 36);
    if (Url::where('shortend', '=' ,$shortend)->first() ){
        get_uniqe_short_url();
    }
    return $shortend;
}
$shortend = get_uniqe_short_url();
// otherwise add new row and return shortned url 
 $row = new URl;
    $row->urls = $url;
    $row->shortend = $shortend;
    $row->save();
 // create a results view and present the short url to the usr 
 if ($row){
    return View::make('result')->with('shortend',$shortend);
 } 
});
Route::get('{shortend}', function($shortend) 
    {
     // query the DB For the row with that short url 
        $row = Url::where('shortend', '=', $shortend)->first();
     // if not found redirect to home page 
        if (is_null($row) ) return Redirect::to('/');
     // else grab the url and redirect 
        return Redirect::to($row->urls);
    });
forgive me for my many questions but i am totally new to laravel
 
     
    