var myApp = angular.module('myApp',[]);
myApp.controller('restaurantController',['$scope','$http', function($scope, $http){
    $http.get($scope.something).success(function (data){
        $scope.items = data;
    });
    $scope.orders = [];
    $scope.process = function(item){
        var cart = '{"name":"'+item.name+'","price":"'+item.quantity*parseInt(item.price)+'","quantity":"'+item.quantity+'"}';
        $scope.orders.push(cart);
    }
}]);

<div class="container" ng-repeat="order in orders">
    <h3>{{order.name}}</h3>
</div>