$http.get doesn't work with REST model using then() function - angularjs

Question

As you guys know, Angular recently deprecated the http.get.success,error functions. So this kind of calls are not recommended in your controller anymore:
$http.get("/myurl").success(function(data){
myctrl.myobj = data;
}));
Rather, this kind of calls are to be used:
$http.get("/myurl").then(
function(data) {
myctrl.myobj = data;
},
function(error) {
...
}
Problem is, simple Spring REST models aren't working with this new code. I recently downloaded a sample code with the above old success function and a REST model like this:
#RequestMapping("/resource")
public Map<String,Object> home() {
Map<String,Object> model = new HashMap<String,Object>();
model.put("id", UUID.randomUUID().toString());
model.put("content", "Hello World");
return model;
}
This should return a map like {id:<someid>, content:"Hello World"} for the $http.get() call, but it receives nothing - the view is blank.
How can I resolve this issue?

Answer 1

The first (of four) argument passed to success() is the data (i.e. body) of the response.
But the first (and unique) argument passed to then() is not the data. It's the full HTTP response, containing the data, the headers, the status, the config.
So what you actually need is
$http.get("/myurl").then(
function(response) {
myctrl.myobj = response.data;
},
function(error) {
...
});

Answer 2

The expectation of the result is different. Its the response and not the data object directly.
documentation says :
// Simple GET request example:
$http({
method: 'GET',
url: '/someUrl'
}).then(function successCallback(response) {
// this callback will be called asynchronously
// when the response is available
}, function errorCallback(response) {
// called asynchronously if an error occurs
// or server returns response with an error status.
});
Properties of the response are
data – {string|Object} – The response body transformed with the transform functions.
status – {number} – HTTP status code of the response.
headers – {function([headerName])} – Header getter function.
config – {Object} – The configuration object that was used to generate the request.
statusText – {string} – HTTP status text of the response.
As the data object is required,
Please convert the code as
$http.get("/resource").then(
function(response) {
myctrl.myobj = response.data;
});

Answer 3

then must be return a new promise so you should handle it with defers.
var myApp = angular.module('myApp', []);
myApp.factory('modelFromFactory', function($q) {
return {
getModel: function(data) {
var deferred = $q.defer();
var items = [];
items.push({"id":"f77e3886-976b-4f38-b84d-ae4d322759d4","content":"Hello World"});
deferred.resolve(items);
return deferred.promise;
}
};
});
function MyCtrl($scope, modelFromFactory) {
modelFromFactory.getModel()
.then(function(data){
$scope.model = data;
})
}
Here is working fiddle -> https://jsfiddle.net/o16kg9p4/7/