how to pass input ng-model to services using angular and php - angularjs

Question

im having problem for $http.get to retrieve json from input fields value from view. heres my code
My form
<div class="container">
<div class="col">
<div class="app-logo"><img src="img/logo.svg"></div>
<div class="list list-inset removePM">
<label class="item item-input">
<input type="text" ng-model="user.username" placeholder="NRIC" >
</label>
<label class="item item-input">
<input type="password" ng-model="user.password" placeholder="Password" > </label>
</div>
<div class="loginButton"><button class="button ion-unlocked button-block button-balanced custom-button" ng-click="login(user);"> Login </button> </div>
</div>
My controller
angular.module('starter.controllers', [])
.controller('LoginCtrl', function($scope, LoginService,
$ionicPopover, $timeout, $location, $ionicPopup, Profiles){
$scope.login = function (user) {
Profiles.grab(user);
};
})
My Services
.factory('Profiles', function($http, $location, sessionService, $window, LoginService) {
var profiles = {content:null};
$http.get('http://192.168.0.113/soap-request/soap.php?username='+ user.username +'&password=' + user.password +'').success(function(data) {
profiles.content = data;
return true;
});
grab: function(data, $http) {
return profiles;
}
});