app.controller('loginCtrl', ['$scope', LoginCtrl]);

function LoginCtrl($scope){
    $scope.login = function(){
        $scope.msgTxt = '';
        $scope.login = function(user){
            loginService.login(user, $scope); //call login service
        };
    }
}

app.factory('loginService', function($http){
    return{
        login:function(user, scope){
            var $promise = $http.post('data/user.php', user); //send data to user.php
            $promise.then(function(msg){
                if(msg.data=='success'){ scope.msgTxt = "Login Succeded";}
                else {scope.msgTxt = "Login Failed";}
            });
        }
    }
});