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PHP Building Websites with PHP Slim Basics & Twig Templates Including & Rendering

I keep getting a Slim Application Error.

Slim Application Error The application could not run because of the following error:


Type: BadMethodCallException
Message: Method display is not a valid method
File: /home/ubuntu/workspace/vendor/slim/slim/Slim/App.php
Line: 124

#0 /home/ubuntu/workspace/index.php(11): Slim\App->__call('display', Array)
#1 /home/ubuntu/workspace/index.php(11): Slim\App->display('index.html')
#2 [internal function]: Closure->{closure}(Object(Slim\Http\Request), Object(Slim\Http\Response), Array)
#3 /home/ubuntu/workspace/vendor/slim/slim/Slim/Handlers/Strategies/RequestResponse.php(41): call_user_func(Object(Closure), Object(Slim\Http\Request), Object(Slim\Http\Response), Array)
#4 /home/ubuntu/workspace/vendor/slim/slim/Slim/Route.php(344): Slim\Handlers\Strategies\RequestResponse->__invoke(Object(Closure), Object(Slim\Http\Request), Object(Slim\Http\Response), Array)
#5 /home/ubuntu/workspace/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(116): Slim\Route->__invoke(Object(Slim\Http\Request), Object(Slim\Http\Response))
#6 /home/ubuntu/workspace/vendor/slim/slim/Slim/Route.php(316): Slim\Route->callMiddlewareStack(Object(Slim\Http\Request), Object(Slim\Http\Response))
#7 /home/ubuntu/workspace/vendor/slim/slim/Slim/App.php(438): Slim\Route->run(Object(Slim\Http\Request), Object(Slim\Http\Response))
#8 /home/ubuntu/workspace/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(116): Slim\App->__invoke(Object(Slim\Http\Request), Object(Slim\Http\Response))
#9 /home/ubuntu/workspace/vendor/slim/slim/Slim/App.php(332): Slim\App->callMiddlewareStack(Object(Slim\Http\Request), Object(Slim\Http\Response))
#10 /home/ubuntu/workspace/vendor/slim/slim/Slim/App.php(293): Slim\App->process(Object(Slim\Http\Request), Object(Slim\Http\Response))
#11 /home/ubuntu/workspace/index.php(18): Slim\App->run()
#12 {main}

composer version is 3.7 if that helps. my code is...

    require 'vendor/autoload.php';
    $config = ['settings' => ['displayErrorDetails' => true]];

    $app = new \Slim\App($config, array(
    'templates.path' => './test-folder'

    $app->get('/', function()  use($app){

    $app->get('/contact', function() use($app){


help! :c

<?php require 'vendor/autoload.php'; date_default_timezone_get('Asia/Seoul'); $config = ['settings' => ['displayErrorDetails' => true]];

$app = new \Slim\App($config);

$app->get('/', function()  use($app){

$app->get('/contact', function() use($app){


Well, i removed the arrays still nothing.

Also fixed $app->display to $app->render again sorry i'm also trying out new stuff. still doesn't work tho.

1 Answer

Chris Shaw
Chris Shaw
26,676 Points

Hi Aero Camacho,

As shown on the GitHub page, you need to return your rendered views otherwise the application won't know it has anything to render.

$app->get('/', function()  use ($app) {
  return $app->render('index.html');

$app->get('/contact', function() use ($app) {
  return $app->render('contact.html');

Happy coding!

I followed the stuff from the github page, it works perfectly now. Thanks!