Slim 3 getParsedBody() always null and empty

Question

I'm am using the Slim Framework Version 3 and have some problems.

$app-> post('/', function($request, $response){
  $parsedBody = $request->getParsedBody()['email'];
  var_dump($parsedBody);
});

result is always:

null

Can you help me ?

Mignon

Can you explain how your request send data to the app? – Ashelyashen

Show an example curl request. – Metastasis

Answer 1

It depends how you are sending data to the route. This is a POST route, so it will expect the body data to standard form format (application/x-www-form-urlencoded) by default.

If you are sending JSON to this route, then you need to set the Content-type header to application/json. i.e. the curl would look like:

curl -X POST -H "Content-Type: application/json" \
  -d '{"email": "[email protected]"}' http://localhost/

Also, you should validate that the array key you are looking for is there:

$parsedBody = $request->getParsedBody()
$email = $parsedBody['email'] ?? false;

Gatlin

I got NULL with var_dump($request->getParsedBody()); when using either PATCH or PUT request. But POST request returns the request body. Is there a different method for PATCH and PUT? – Pilsen

@Pilsen Please create a separate question with a minimal PHP code example and the curl command used to show the problem. – Gatlin

Answer 2

When I switch to slimframework version 4, I had to add :

$app->addBodyParsingMiddleware();

Otherwise the body was always null (even getBody())

Liard

The question is about Slim version 3, not 4. – Pestilent

Thank you, my Slim 4 search brought me here. – Dilapidation

Even though this question is about slim 3, you indeed find it always at the top and this answer is the perfect answer for slim 4 so thank you very much! – Leatherman

Answer 3

Please, try this way:

$app-> post('/yourFunctionName', function() use ($app) {
  $parameters = json_decode($app->request()->getBody(), TRUE);
  $email = $parameters['email'];
  var_dump($email);
});

I hope this helps you!

Paint

That will not work for Slim Framework 3, which is what the OP is using. – Trometer

Are you sure? It works for me. Look at this #28073980 – Paint

That is for Slim Framework version 2, not for Slim Framework version 3. The way the requests work was heavily changed from 2 to 3. – Trometer

Answer 4

In Slim 3, you must register a Media-Type-Parser middleware for this.

http://www.slimframework.com/docs/v3/objects/request.html

$app->add(function ($request, $response, $next) {
    // add media parser
    $request->registerMediaTypeParser(
        "text/javascript",
        function ($input) {
            return json_decode($input, true);
        }
    );

    return $next($request, $response);
});

Ninefold