Using DynamicForm and ObjectNode with Scala

[Stefano Di Martino]

I'm porting a Play application written in Java to Scala. I had no problems until I stuck with DynamicForm. I just can't find this class in the Scala version of Play. There is no such thing like DynamicForm. How would you port this code to Scala?!

DynamicForm data = form().bindFromRequest();

The next problem arises when I use ObjectNode:

ObjectNode respJSON = Json.newObject();
//...
return ok(respJSON);

Ported to this:

var respJSON = Json.newObject
//...
Ok(respJSON)

Following error occurs on the last line (Ok(respJSON)):

Cannot write an instance of org.codehaus.jackson.node.ObjectNode to HTTP response. Try to define a Writeable[org.codehaus.jackson.node.ObjectNode]

Anyone, who could help me?

Thanks in advance!
Stefano

[Stefano Di Martino]

Btw: I'm using Play 2.1.1 and Scala 2.10

[Stefano Di Martino]

This seems to work for DynamicForms, but I can't test it, because the second error still appears:

import play.data.DynamicForm
//...
val data = new DynamicForm().bindFromRequest()

As I said, the second Json error still appears. Any ideas?

Thx in advance!
Stefano

[Stefano Di Martino]

Hi,

I had now the possibility to test this code and it doesn't work!

java.lang.RuntimeException: There is no HTTP Context available from here.

Actually I don't really need the Java DynmaicForm but an equivalent(!) of it!

Anyone any idea?!

Best regards!

Stefano

PS: The Json problem is solved.

[Guillaume Bort]

It depends of what you are actually trying to do.

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[Stefano Di Martino]

I want to read values from a HTML form (type = submit). The form is written in pure HTML!

In Java this is done in the following way:

DynamicForm data = form().bindFromRequest();

String foo = data.get("my-input-id");

Thx in advance for help!

Regards

Stefano

[Guillaume Bort]

Either use the Form API for that:

val f = form(

  "my-input-id" -> text

)

f.bindFromRequest()

Or access directly the body data using request.body.asUrlFormEncoded

--
Guillaume Bort, http://guillaume.bort.fr

[Stefano Di Martino]

I used request.body.asUrlFormEncoded - thx a lot!!! :)