play tettei 3.3 scalaを使ったテンプレートの記述 @Repeaat

Application.java

package controllers;

import models.*;

import java.util.*;

import play.*;
import play.data.*;
import play.mvc.*;
import views.html.*;

public class Application extends Controller {
    // フォーム管理用クラス
    public static class SampleForm {
        public List<String> inputs;
    }

    // ルートにアクセスした際のAction
    public static Result index() {
        Form<SampleForm> form = new Form(SampleForm.class);
        return ok(index.render("please set form.", form));
    }

    // POST送信された際のAction
    public static Result send() {
        Form<SampleForm> f = new Form(SampleForm.class).bindFromRequest();
        if (!f.hasErrors()) {
            SampleForm sf = f.get();
            String res = "value: ";
            for (String s : sf.inputs) {
                res += " " + s;
            }
            sf.inputs.add("");
            return ok(index.render(res, f));
        } else {
            return badRequest(index.render("ERROR", f));
        }
    }
}

index.scala.html

@(msg: String, form1: Form[Application.SampleForm])
    @main("Sample Page") {
        <h1>Hello!</h1> <p>@msg</p>
        @helper.form(action = routes.Application.send) {
            @helper.repeat(
                field = form1("inputs"), min = 3
            ) { fld => @helper.inputText(
                field = fld, '_label -> "input")
            }
            <input type="submit">
        }
    }