Angular resource REST has no method '$save' - angularjs

Question

I would like to interact with a REST API using $resource but when calling the save method I get has no method '$save' error. My code is inspired by the answer found on AngularJS $resource RESTful example
myapp.factory('Monitoring', function($resource) {
return $resource('http://localhost:8080/wepapp/network/v1/cronjobs/:id', { id: '#id' } );
});
Q1: What is the purpose of # in { id: '#id' }? I found it in most of the examples.
myapp.factory('MonitoringCRUDControllerService', ['Monitoring', function(Monitoring) {
return {
create: function(id, command, schedule) {
console.log("create");
console.log(command);
console.log(schedule);
Monitoring.id = id;
Monitoring.command = command;
Monitoring.schedule = schedule;
console.log(Monitoring);
Monitoring.$save();
}
}
}]);
The Monitoring object is correctly injected:
function Resource(value){
copy(value || {}, this);
}
Calling the $save failed with the error has no method '$save'.
Q2: What the purpose of $ before save?
Q3: What am I missing to make the save method work?

Answer 1

You need to create an instance of your Monitoring class like this (not tested):
var m = new Monitoring({id:id});
m.command = command;
m.schedule = schedule;
m.$save();
The documentation (http://docs.angularjs.org/api/ngResource.$resource) has a similar example:
var newCard = new CreditCard({number:'0123'});
newCard.name = "Mike Smith";
newCard.$save();
I asked the same question about the # sign a while ago: "at" sign in parameter names in resource definition. Basically # sign means that the value will be read from the object's property. Or as the same documentation says:
If the parameter value is prefixed with # then the value of that
parameter is extracted from the data object (useful for non-GET
operations).
The $ is not any special character, it is just a part of the method name.