GWT on Rails : CRUDの'R'の拡張？ 'Index'

ということ(?)でDashboard.javaを編集してみる．一覧だ．．

app/gwt/dashboard/src/dashboard/client/Dashboard.java

//import類は省くが困ったらgwtのモノを選んどけばたいてい大丈夫
public class Dashboard implements EntryPoint {
    public void onModuleLoad() {
        final Button button = new Button("Click me");
        final Label label = new Label();
        button.addClickListener(new ClickListener() {
            public void onClick(Widget sender) {

//add 
    ResourceCollection projects = new RailsJsonResourceCollection(
      "/projects/", new ResourceFactory() {
       public Resource create() {
        return (Resource) GWT.create(Project.class);
       }
      });
    projects.findAll(new CollectionResponseHandler() {
     public void onSuccess(Collection resources) {
      String msg= "[";
      Iterator projectIter= resources.iterator();
      while(projectIter.hasNext()) {
       Project p= (Project) projectIter.next();
       msg += (msg.length()>1)?", ":"";
       msg += p.getName();
      }
      msg += "]";
      label.setText(msg);
     }
     public void onError(Request request, Throwable exception) {
      label.setText("Something went wrong.");
     }  
    });
//add

                if (label.getText().equals(""))
                    label.setText("Hello World!");
                else
                    label.setText("");
            }
        });
        //slotは'app/views/dashboard/index.html.erb'内のidでの定義．
        //button, labelはそこにハマる．
        RootPanel.get("slot1").add(button);
        RootPanel.get("slot2").add(label);
    }
}

これは登録されている全てのProjectを取ってくる例．取ってきた結果のnameを文字列に詰め込んでlabelに入れているあたりがちょっと新しいかなw．

> rake dashbaord:compile
> script/server

ブラウザにて'http://localhost:3000/dashboard/'へアクセス