With $resource you can pre-define the URL for your factory/service to use
(including variables) as well as the HTTP verbs that each will use:
var addressTypesAPI = '/v1/rest/addresstype/:sid';
var addressTypesResource = $resource(addressTypesAPI, params, {query: {
method: 'GET'}, create: { method: 'POST'}, update: { method: 'PUT'},
remove: { method: 'DELETE'}});
Now, every requests you make with that resource will use the same URL
(/v1/rest/addresstype/) and variable (:sid if it exists.) This is more
desirable because you have fewer places in which to keep the same URL,
resulting in code that is easier to maintain and test. $resource is best
used in a factory/service and returned as the result of a method call:
var addrList = addressTypesResource.query();
addrList.$promise.then(function(data){
//do something with the data here
});
When appearing in a controller, the call above is SO much cleaner than
using $http all over the place. Now, yes, you could use $http in a similar
fashion, but there is more work involved in setting it up, which makes no
sense when $resource does it much easier.
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