Get parameter in transformRequest

Issue

I use a REST Server API with angular $resource. I have no control over the Server API. The Server API requires that a list item has a property ItemTyp, which the list name with a Item appended. Which is redundant information

I would like to use the same resource for multiple lists and no. I tried following:

(function () {
    'use strict';

    angular.module('mod', ['ngResource']);

    angular.module('mod').controller('Controller', function (ListItem) {
        var listItem1 = new ListItem({ a: 1 });
        listItem1.$save();

        var listItem2 = new ListItem({ b: 2 });
        listItem2.$save({ listName: 'list2' });
    });

    angular.module('mod').factory('ListItem', function ($resource) {
        return $resource('/_api/lists/:listName/:Id', { listName: 'list1', Id: '@Id' },
            {
                save: {
                    method: 'POST',
                    transformRequest: function (data) {
                        //data.ItemTyp = listName + "Item";
                        return angular.toJson(data);
                    }
                }
            });
    });
})();

But I found no way to get the params in the transformRequest. Is there a way to get the params or a other way to solve my problem?

Solution

You need a wrapper function to parse parameter into that object. Take a look at someData. Btw. you don't need to create a new object like new ListItem().

(function () {
    'use strict';

    angular.module('mod', ['ngResource']);

    angular.module('mod').controller('Controller', function (ListItem) {
        ListItem({ data: 'test'}).save({Id: 3, listName: 'testName'});
        ListItem({ data: 'test'}).save({Id: 4, listName: ''});
    });

    angular.module('mod').factory('ListItem', function ($resource) {
        return function (someData) {
            return $resource('/_api/lists/:listName/:Id',  { 
                    listName: '@listName', 
                    Id: '@Id' 
                }, {
                    save: {
                        method: 'POST',
                        transformRequest: function (data) {
                            //data.ItemTyp = listName + "Item";
                            console.log(someData);
                            return angular.toJson(data);
                        }
                    }
                }
            );
        }
    });
})();

Answered By - lin