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https://github.com/johnpapa/hottowel

John Papa's ASP.NET MVC SPA Template (Durandal)
https://github.com/johnpapa/hottowel

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John Papa's ASP.NET MVC SPA Template (Durandal)

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# Hot Towel SPA Template #

----------
> Hot Towel: Because you don't want to go to the SPA without one!

Want to build a SPA but can't decide where to start? Use Hot Towel and in seconds you'll have a SPA and all the tools you need to build on it!

![](http://johnpapa.net/wp-content/images/HotTowelPreview.png)

Hot Towel creates a great starting point for building a Single Page Application (SPA) with ASP.NET. Out of the box you it provides a modular structure for your code, view navigation, data binding, rich data management and simple but elegant styling. Hot Towel provides everything you need to build a SPA, so you can focus on your app, not the plumbing.

> Learn more about building a SPA from [John Papa's videos, tutorials and Pluralsight courses](http://johnpapa.net/spa?vsix).

## Application Structure ##
Hot Towel SPA provides an App folder which contains the JavaScript and HTML files that define your application.

Inside the App folder:

![](http://johnpapa.net/wp-content/images/HotTowelAppFolder.png)

The App folder contains a collection of modules. These modules encapsulate functionality and declare dependencies on other modules. The views folder contains the HTML for your application and the viewmodels folder contains the presentation logic for the views (a common MVVM pattern). The services folder is ideal for housing any common services that your application may need such as HTTP data retrieval or local storage interaction. It is common for multiple viewmodels to re-use code from the service modules.

## ASP.NET MVC Server Side Application Structure ##
Hot Towel builds on the familiar and powerful ASP.NET MVC structure.

+ App_Start
+ Content
+ Controllers
+ Models
+ Scripts
+ Views

## Featured Libraries ##
- ASP.NET MVC
- ASP.NET Web API
- ASP.NET Web Optimization - bundling and minification
- [Breeze.js](http://Breezejs.com) - rich data management
- [Durandal.js](http://Durandaljs.com) - navigation and View composition
- [Knockout.js](http://Knockoutjs.com) - data bindings
- [Require.js](http://requirejs.org) - Modularity with AMD and optimization
- [Toastr.js](http://jpapa.me/c7toastr) - pop-up messages
- [Twitter Bootstrap](http://twitter.github.com/bootstrap/) - robust CSS styling

## Installing via the Visual Studio 2012 Hot Towel SPA Template ##
Hot Towel can be installed as a Visual Studio 2012 template. Just click `File` | `New Project` and choose `ASP.NET MVC 4 Web Application`. Then select the 'Hot Towel Single Page Application" template and run!

## Installing via the NuGet Package ##
Hot Towel is also a NuGet package that augments an existing empty ASP.NET MVC project. Just install using Nuget and then run!

Install-Package HotTowel

## How Do I Build On Hot Towel? ##
Simply start adding code!

1. Add your own server-side code, preferably Entity Framework and WebAPI (which really shine with Breeze.js)
2. Add views to the `App/views` folder
3. Add viewmodels to the `App/viewmodels` folder
4. Add HTML and Knockout data bindings to your new views
5. Update the navigation routes in `shell.js`

## Walkthrough of the HTML/JavaScript ##
### Views/HotTowel/index.cshtml ###
index.cshtml is the starting route and view for the MVC application. It contains all the standard meta tags, css links, and JavaScript references you would expect. The body contains a single `

` which is where all of the content (your views) will be placed when they are requested. The `@Scripts.Render` uses Require.js to run the entrance point for the application's code, which is contained in the `main.js` file. A splash screen is provided to demonstrate how to create a splash screen while your app loads.



@Html.Partial("_splash")


@Scripts.Render("~/scripts/vendor")

### App/main.js ###
The `main.js` file contains the code that will run as soon as your app is loaded. This is where you want to define your navigation routes, set your start up views, and perform any setup/bootstrapping such as priming your application's data.

The `main.js` file defines several of durandal's modules to help the application kick start. The define statement helps resolve the modules dependencies so they are available for the function. First the debugging messages are enabled, which send messages about what events the application is performing to the console window. The app.start code tells durandal framework to start the application. The conventions are set so that durandal knows all views and viewmodels are contained in the same named folders, respectively. Finally, the `app.setRoot` kicks loads the `shell` using a predefined `entrance` animation.

define(['durandal/app',
'durandal/viewLocator',
'durandal/system',
'durandal/plugins/router'],
function (app, viewLocator, system, router) {

// Enable debug message to show in the console
system.debug(true);

app.start().then(function () {
router.useConvention();
viewLocator.useConvention();
//Show the app by setting the root view model for our application.
app.setRoot('viewmodels/shell', 'entrance');
});
});

## Views ##
Views are found in the `App/views` folder.

### shell.html ###
The `shell.html` contains the master layout for your HTML. All of your other views will be composed somewhere in side of your `shell` view. Hot Towel provides a `shell` with three such regions: a header, a content area, and a footer. Each of these regions is loaded with contents form other views when requested.

The `compose` bindings for the header and footer are hard coded in Hot Towel to point to the `nav` and `footer` views, respectively. The compose binding for the section `#content` is bound to the `router` module's active item. In other words, when you click a navigation link its corresponding view is loaded in this area.













### nav.html ###
The `nav.html` contains the navigation links for the SPA. This is where the menu structure can be placed, for example. Often this is data bound (using Knockout) to the `router` module to display the navigation you defined in the `shell.js`. Knockout looks for the data-bind attributes and binds those to the `shell` viewmodel to display the navigation routes and to show a progressbar (using Twitter Bootstrap) if the `router` module is in the middle of navigating from one view to another (see `router.isNavigating`).




### home.html and details.html###
These views contain HTML for custom views. When the `home` link in the `nav` view's menu is clicked, the `home` view will be placed in the content area of the `shell` view. These views can be augmented or replaced with your own custom views.

### footer.html ###
The `footer.html` contains HTML that appears in the footer, at the bottom of the `shell` view.

## ViewModels ##
ViewModels are found in the `App/viewmodels` folder.

### shell.js ###
The `shell` viewmodel contains properties and functions that are bound to the `shell` view. Often this is where the menu navigation bindings are found (see the `router.mapNav` logic).

define(['durandal/system', 'durandal/plugins/router', 'services/logger'],
function (system, router, logger) {
var shell = {
activate: activate,
router: router
};

return shell;

function activate() {
return boot();
}

function boot() {
router.mapNav('home');
router.mapNav('details');
log('Hot Towel SPA Loaded!', null, true);
return router.activate('home');
}

function log(msg, data, showToast) {
logger.log(msg, data, system.getModuleId(shell), showToast);
}
});

### home.js and details.js ###
These viewmodels contain the properties and functions that are bound to the `home` view. it also contains the presentation logic for the view, and is the glue between the data and the view.

define(['services/logger'], function (logger) {
var vm = {
activate: activate,
title: 'Home View'
};

return vm;

function activate() {
logger.log('Home View Activated', null, 'home', true);
return true;
}
});

## Services ##
Services are found in the App/services folder. Ideally your future services such as a dataservice module, that is responsible for getting and posting remote data, could be placed.

### logger.js ###
Hot Towel provides a `logger` module in the services folder. The `logger` module is ideal for logging messages to the console and to the user in pop up toasts.

## Resources ##

+ [SPA Resources](http://johnpapa.net/spa)
+ [Hot Towel on GitHub](https://github.com/johnpapa/HotTowel)

### Hot Towel SPA on NuGet ###
Hot Towel also comes as a NuGet package that you can add to an ASP.NET MVC application. If you start from scratch, the template is the way to go. If you have an existing project, you can use the NuGet package (which lacks the start-up hooks that the template has).

Hot Towelette SPA on NuGet


Hot Towel also comes as a NuGet package that you can add to an ASP.NET application (no MVC required). If you start from scratch, the template is the way to go. If you have an existing project, you can use the NuGet package (which lacks the start-up hooks that the template has).