This is for flash data not request parameters.

return Redirect::route('user')->with('nick', $username);

Use this one

return Redirect::route('user', array('nick' => $username));

And I think your problem is you didn't name your route. Try

Route::get('user/{nick}', array('as' => 'user', function($nick) { return View::make('home.user')->with('target', $nick); })); 

bmgalego said:

This is for flash data not request parameters.

return Redirect::route('user')->with('nick', $username);

Use this one

return Redirect::route('user', array('nick' => $username));

And I think your problem is you didn't name your route. Try

Route::get('user/{nick}', array('as' => 'user', function($nick) { return View::make('home.user')->with('target', $nick); })); 

I've modified, now this are my routes

Route::get('/find', array(
	'as' => 'find-post',
	'uses' => 'HomeController@find'
));
Route::get('/find', function() {
return View::make('home.find');
});
Route::get('user/{nick}', array('as' => 'user', function($nick) {
return View::make('home.user')->with('target', $nick);
})); 

And this the controller

public function find() {
	$validator = Validator::make(Input::all(), 
			array(
				'username' => 'required'
			));
	if($validator->fails()) {
		return Redirect::route('find')
				->withErrors($validator);
	}
	else
	{
	$username = Input::get('username');
	$search = User::where('Name', '=', $username)->first();
	if($search) {
	return Redirect::route('user', array('nick' => $username));
	}
	else
	{
	$errors = new MessageBag(['error' => ['Player does not exist']]);
	return Redirect::back()->withErrors($errors);
	}
	}
}

And i still get NotFoundHttpException

Here you have two routes with same uri and method. fix that

Route::get('/find', array(
    'as' => 'find-post',
    'uses' => 'HomeController@find'
));

Route::get('/find', function() {
return View::make('home.find');
});

And in controller you redirect when validator fails to Redirect::route('find'), and you have no routes named find. Remember you are using named routes, so name your routes. If you want to redirect to a specific url use Redirect::to('find')

bmgalego said:

Here you have two routes with same uri and method. fix that

Route::get('/find', array(
   'as' => 'find-post',
   'uses' => 'HomeController@find'
));

Route::get('/find', function() {
return View::make('home.find');
});

And in controller you redirect when validator fails to Redirect::route('find'), and you have no routes named find. Remember you are using named routes, so name your routes. If you want to redirect to a specific url use Redirect::to('find')

Route::get('/find', array(
	'as' => 'find-post',
	'uses' => 'HomeController@find'
));
Route::get('/find', array('as' => 'find', function() {
return View::make('home.find');
});
Route::get('user/{nick}', array('as' => 'user', function($nick) {
return View::make('home.user')->with('target', $nick);
})); 

I named my routes, one find is find-post, and the other is just find. But i still get notfound