Question

I’m using Play! framework 20 on a java project and I have a problem with passing a form to the view.

In the controller I have the following code:

Filter filter = new Filter();
//add some state to the filter object
Form<Filter> filterForm = form(Filter.class).fill(filter);
Logger.info("FilterForm: " + filterForm.get().toString()); // So far so good
return ok(filterView.render(filterForm));

And in the template:

@filterForm.hasErrors() // renders false
@filterForm.data().isEmpty() // renders true!!
@*  @filterForm.get().toString()  *@ throws an Exception: No Value

I also get the same error if in the controller I fill the filter state via a Map:

filterForm = filterForm.bind(aMapWithTheState);

This behaviour is only when filling the filter in code. when I do filterForm.bindFromRequest() in other methods all works fine.

Thanks!!

Answer 1

Solved.

I had to use the form’s bind method using a map with the state as I did before. But the correct way is to also pass the properties name:

Map<String, String> formState = new HashMap<String, String>();
formState.put("name", name);
formState.put("birthDate", birthDate);
formState.put("address", address);

filterForm = filterForm.bind(formState, "name", "birthDate", "address");

Despite that the documentation says that the property names are not mandatory.