Merge pull request #44 from doublemarked/39-support-promises

Add promise support

lib/remote-connector.js

@@ -4,6 +4,7 @@
 
 var assert = require('assert');
 var remoting = require('strong-remoting');
+var utils = require('loopback-datasource-juggler/lib/utils');
 var jutil = require('loopback-datasource-juggler/lib/jutil');
 var RelationMixin = require('./relations');
 var InclusionMixin = require('loopback-datasource-juggler/lib/include');
@@ -94,14 +95,18 @@ function createProxyMethod(Model, remotes, remoteMethod) {
     var callback;
     if (lastArgIsFunc) {
       callback = args.pop();
+    } else {
+      callback = utils.createPromiseCallback();
     }
 
     if (remoteMethod.isStatic) {
-      return remotes.invoke(remoteMethod.stringName, args, callback);
+      remotes.invoke(remoteMethod.stringName, args, callback);
+    } else {
+      var ctorArgs = [this.id];
+      remotes.invoke(remoteMethod.stringName, ctorArgs, args, callback);
     }
 
-    var ctorArgs = [this.id];
-    return remotes.invoke(remoteMethod.stringName, ctorArgs, args, callback);
+    return callback.promise;
   }
 
   scope[remoteMethod.name] = remoteMethodProxy;

test/models.test.js

@@ -94,6 +94,15 @@ describe('Model tests', function() {
     });
   });
 
+  describe('Model methods', function() {
+    it('should support promises', function(done) {
+      assert(User.create() instanceof Promise);
+      assert(User.find() instanceof Promise);
+      assert(User.findById(99) instanceof Promise);
+      done();
+    });
+  });
+
   describe('Model.create([data], [callback])', function() {
     it('should create an instance and save to the attached data source',
         function(done) {