[2.0-java] Problem Passing Form - invalid type - play.data.Form vs. play.api.data.Form

[Vladimir Vlach]

HI,

I am building form using samples in Eclipse & Java. I can't get my form to work properly due to invalid classes passed to views.

play.data.Form<JobBean> jobForm = form(JobBean.class); 

and view requires object using play.api.data.Form. How can I fix this?

// controller

public static Result add() {

play.data.Form<JobBean> jobForm = form(JobBean.class);

play.data.Form<JobBean> jb = jobForm.bindFromRequest();

// The method render(Form<JobBean>) in the type addJobForm is not applicable for the arguments (Form<JobBean>)

Html content = views.html.Jobs.addJobForm.render(jb); // error

return ok(content);

}

// view

@(taskForm: play.api.data.Form[models.JobBean])

@import views.html.helper._

@views.html.main("Todo list") {

}

Thanks!

Vlad

[opensource21]

As far as I remember the java Form is a subclass from the scala-form, so this shouldn't be the problem. Looks to me more to a reload problem of eclipse. So first question:

Does play complains that's wrong or which tool does it?

Niels

[ra...@oddly.co]

Vladimir Vlach,

[ra...@oddly.co]

Vladimir Vlach, Did you solved the problem... I m having the same issue please help.

Cheers, 

Rajiv Croos

[Vladimir Vlach]

Hi Rajiv,

MAKE SURE the Object type in your template is SAME Object passed by render. I think the issue was that the template was expecting different object and was caused by typo. The message is kind of confusing. Let me know if it helps. I can dig into my code how I did it.

Vlad

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[ra...@oddly.co]

Thanks for the quick response.

index.scala.html...................................

@(form: Form[Seed])

@main("Welcome") {

    <script src="@routes.Assets.at("javascripts/index.min.js")" type="text/javascript"></script>

    @helper.form(action = routes.Application.addSeed) {

        @helper.inputText(form("name"))

        @helper.inputText(form("url"))

        <input type="submit" value="Add seed"/>

    }

    

    <ul id="seeds"></ul>

}

....................................................................................................

and in the controller (Application.java)

import play.core.j.PlayMagicForJava;

import play.data.Form;

import play.libs.Json;

import play.mvc.Result;

import services.SeedService;

import views.html.index;

@org.springframework.stereotype.Controller

public class Application{

    @Autowired

    private SeedService seedService;

    public Result index() {

        return play.mvc.Controller.ok(index.render(play.data.Form.form(Seed.class)));

    }

    public Result addSeed() {

        Form<Seed> form = play.data.Form.form(Seed.class).bindFromRequest();

        Seed seed = form.get();

        seedService.addSeed(seed);

        return play.mvc.Controller.redirect(controllers.routes.Application.index());

    }

    public Result listSeeds() {

        return play.mvc.Controller.ok(Json.toJson(seedService.getAllSeeds()));

    }

    

}

.................................................................................................................

I know the view use play.api.data.Form while Controller use play.data.Form. To use one data type in the both places is the issue as i dont know how to render the Fom without using play.data.Form.form as play.api.data.Form doesnt have a form() method. I m stuck here.

Thanks a lot again.

Rajiv

[Robby Pelssers]

I had the same issue.

It seems that the templates assume play.api.data.Form by default

So this will give issues:

@(proposalForm: Form[Proposal])

@import helper._

@main("New proposal") {

    @form(action = routes.MainController.submitProposal()) {

    }

}

Change it into

@(proposalForm: play.data.Form[Proposal])

@import helper._

@main("New proposal") {

    @form(action = routes.MainController.submitProposal()) {

    }

}

And if eclipse or intellij don't automatically regenerate the code for the view... do a clean and compile from the command line.

Hope that helps :)

Robby

[Alberto Souza]

I use form in views all the time with no problems. Form is not a subclass of Scala Form, as you can see here => https://github.com/playframework/playframework/blob/master/framework/src/play-java/src/main/java/play/data/Form.java. Just receive @(form:Form[Seed) and everything should work. If not, try to use play.data.Form, but I think you don't need.

Alberto Souza

www.caelum.com.br
www.leanpub.com/playframeworknapratica
www.alots.wordpress.com/

[Will Sargent]

If you add

templatesImport += “play.data._" 

to your SBT file then I think that should let it pick up the Java package.

Will.

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