Any good AJAX framework for Google App Engine apps? [closed]

Answer 1

I'd recommend looking into a pure javascript framework (probably Jquery) for your client-side code, and write JSON services in python- that seems to be the easiest / bestest way to go.

Google Web Toolkit lets you write the UI in Java and compile it to javascript. As Dave says, it may be a better choice where the backend is in Java, as it has nice RPC hooks for that case.

Answer 2

try also GQuery for GWT. This is Java code:

public void onModuleLoad() { 
    $("div").css("color", "red").click(new Function() { 
        public void f(Element e) { 
            Window.alert("Hello"); 
            $(e).as(Effects).fadeOut(); 
        } 
    }); 
} 

Being Java code resulting in somewhat expensive compile-time (Java->JavaScript) optimizations and easier refactoring.

Nice, it isn't?

Answer 3

I'm currently using JQuery for my GAE app and it works beautifully for me. I have a chart (google charts) that is dynamic and uses an Ajax call to grab a JSON string. It really seems to work fine for me.

Answer 4

If you want to be able to invoke method calls from JavaScript to Python, JSON-RPC works well with Google App Engine. See Google's article, "Using AJAX to Enable Client RPC Requests", for details.

Answer 5

As Google Web Toolkit is a subset of Java it works best when you Java at the backend too. Since Google App Engine is currently Python only I think you'd have to do a lot of messing about to get your server and client to talk nicely to each other.

jQuery seems to be the most popular JavaScript library option in the AJAX Tag at DjangoSnippets.com.

Edit: The above is only true of Google App Engine applications written in Python. As Google App Engine now supports Java, GWT could now be a good choice for writing an AJAX front end. Google even have a tutorial showing you how to do it.

Answer 6

You may want to have a look at Pyjamas (http://pyjs.org/), which is "GWT for Python".