gistfile1.js

function DataGate() {
    var loadOne = function (url, ctor, callback) {
        $.getJSON(url, function (model) {
            var result = new ctor(model);
            callback(result);
        });
    };

    var loadMany = function (url, ctor, callback) {
        $.getJSON(url, function (model) {
            var result = $.map(model, function (p) { return new ctor(p); });
            callback(result);
        });
    };

    this.getProducts = function (callback) {
        loadMany('/Products/Index/', Product, callback);
    };

    this.getProduct = function (productId, callback) {
        loadOne('/Products/Details/' + productId, Product, callback);
    };

    this.getProductIssues = function (productId, callback) {
        loadMany('/Issues/Index/' + productId, Issue, callback);
    };

    this.getIssueStories = function (issueId, callback) {
        loadMany('/Stories/Index/' + issueId, Story, callback);
    };

    this.getStoryBlocks = function (storyId, callback) {
        loadMany('/StoryBlocks/Index/' + storyId, StoryBlock, callback);
    };
}