How to use strophe.plugins with backbone and require.js - backbone.js

Question

I use the strophe.archive plugin but the done function of the Deferred object seems to be "undefined" after Strophe sends the query. I also added the plugin to the "shim" of require.js:
var q = $.Deferred();
q = connection.archive.listCollections("user#server.lit");
console.log(q);
q.done(function(){
console.log("DONE");
});
I get the following trace:
Uncaught TypeError: Cannot call method 'done' of undefined test.js:23
Backbone.View.extend.initialize test.js:23
Backbone.View backbone.js:1148
child backbone.js:1393
Backbone.Router.extend.pageTest router.js:92
(anonymous function) backbone.js:900
(anonymous function) backbone.js:1082
_.some._.any underscore.js:193
_.extend.loadUrl backbone.js:1080
_.extend.navigate backbone.js:1125
_.extend.navigate backbone.js:909
Backbone.View.extend.pageTest test1.js:199
jQuery.event.dispatch require-jquery.js:5385
elemData.handle.eventHandle
shim:
archive: {
deps: ["jquery", "strophe"],
exports: "archive"
},

Answer 1

You invoke a deferred obj and assign it to q, and then you assign the result of listCollections to q. These are two different and completely unrelated assignments. Just because you made q a deferred initially doesn't mean that the result from listCollections is now somehow deferrable.
var q = $.Deferred(); // q is a deferred obj
q = connection.archive.listCollections("user#server.lit"); // q is undefined
listCollections must return a deferred object for you to be able to call done on it.
Looking at the plugin code, it looks like listCollections doesn't return anything.
Instead, you must pass listCollections a callback function:
var q = $.Deferred();
q = connection.archive.listCollections("user#server.lit", null, function(){
console.log("DONE");
});
Alternatively, you can make a wrapper function for listCollections that will return a deferred.
function deferrableListCollections () {
var q = $.Deferred();
connection.archive.listCollections("user#server.lit", null, function(){
q.resolve() ;
});
return q;
}
No you can call something similar to your original code:
q = deferrableListCollections("user#server.lit");
q.done(function(){
console.log("DONE");
});