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Maarten Balliauw {blog}

ASP.NET, ASP.NET MVC, Windows Azure, PHP, ...

About the author

Maarten Balliauw is currently employed as a Technical Evangelist at JetBrains. His interests are mainly web applications developed in ASP.NET (C#) or PHP and the Windows Azure cloud platform.
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The opinions expressed herein are my own personal opinions and do not represent my employer's view in any way.

© Copyright Maarten Balliauw 2013


Windows Azure SDK for PHP v3.0 released

Microsoft and RealDolmen are very proud to announce the availability of the Windows Azure SDK for PHP v3.0 on CodePlex! (here's the official Microsoft post) This open source SDK gives PHP developers a speed dial library to fully take advantage of Windows Azure’s cool features. Version 3.0 of this SDK marks an important milestone because we’re not only starting to witness real world deployment, but also we’re seeing more people joining the project and contributing.

New features include a pluggable logging infrastructure (based on Table Storage) as well as a full implementation of the Windows Azure management API. This means that you can now build your own Windows Azure Management Portal using PHP. How cool is that? What’s even cooler about this… Well… how about combining some features and build an autoscaling web application in PHP? Checkout http://dealoftheday.cloudapp.net/ for a sample of that. Make sure to read through as there are some links to how you can autoscale YOUR apps as well!

A comment we received a lot for previous versions was the fact that for table storage, datetime values were returned as strings and parsing of them was something you as a developer should do. In this release, we’ve broken that: table storage entities now return native PHP DateTime objects instead of strings for Edm.DateTime properties.

Here’s the official changelog:

  • Breaking change: Table storage entities now return DateTime objects instead of strings for Edm.DateTime properties
  • New feature: Service Management API in the form of Microsoft_WindowsAzure_Management_Client
  • New feature: logging infrastructure on top of table storage
  • Session provider now works on table storage for small sessions, larger sessions can be persisted to blob storage
  • Queue storage client: new hasMessages() method
  • Introduction of an autoloader class, increasing speed for class resolving
  • Several minor bugfixes and performance tweaks

Find the current download at http://phpazure.codeplex.com/releases/view/66558. Do you prefer PEAR? Well... pear channel-discover pear.pearplex.net & pear install pearplex/PHPAzure should do the trick.


Categories: Windows Azure | General | ICT | PHP | Projects

Wordpress auto sign-on with IIS7 and a plugin

For our RealDolmen blog platform, where we use Wordpress as the engine running multiple external and internal blogs (yes, that’s an internal SaaS we have there!), we wanted to have an easy solution for our employees to sign-on to the platform. We had a look at the Wordpress plugin repository and found the excellent Simple LDAP Login plugin for providing sign-on through Active Directory. This allowed for sign-on using Active Directory credentials. However, when browsing the blogs from the corporate network, the login page is one extra step in the way of users: they are already logged on to the network, so why sign-on again using the same credentials?

Luckily for us, we are hosting Wordpress on Windows, IIS 7 and SQL Server. Shocked? No Linux, MySQL, .htaccess and mod_rewrite there! And it works perfectly. In fact, we get some extras for free: single sign-on is made possible by IIS!

Configuring Windows Authentication in IIS7

In order to provide a single sign-on scenario for Wordpress on IIS, simply enable Windows Authentication in the IIS7 management console, like so:

Windows Authentication in IIS - Wordpress, PHP

If you now browse to the Wordpress site… Nothing happens! Except the normal stuff: a non-logged-in version of the site is displaying… The reason for this is obvious: anonymous authentication is also enabled and is higher up the chain, hence IIS7 refuses to authenticate the user using his Active Directory credentials… One solution may be to reverse the order, but that would mean *every* single user is required to sign-on. Not the ideal situation… And that’s where our custom plugin for Wordpress comes in handy, heck, we’re even sharing it with you so you can use it too!

Fooling IIS7 when required…

A solution to the fact that anonymous authentication is higher up the chain in IIS7 and that this is required by the fact that we don’t want everyone to have to login, is fooling IIS7 into believing that Windows Authentication is higher up the chain in some situations… And why not do that from PHP and wrap that “hack” into a Wordpress plugin?

The basis for our plugin is the following: whenever a user browses the website and uses Internet Explorer (sorry, no support for this in the other browsers…), Windows Authentication is a possibility. The only step left is triggering this, which is pretty easy: if you detect a user is coming from the local LAN and is using Internet Explorer (on Windows), send the user a HTTP/1.1 401 Unauthorized header. This will make IE send out the Windows Authentication token to the server and will also trick IIS7 into thinking that anonymous authentication failed, which will immediately trigger Windows Authentication server-side as well.

Now how to do this in a Wordpress plugin? Well, simple: hook into 2 events Wordpress offers, namely init and login_form. Init? Well, yes! You want users to automatically sign-on when coming from the LAN. There’s no better hook to do that than init. The other one is obvious: if a user somehow lands at the login page and is coming from the local LAN, you want that page to be skipped and use Windows Authentication there. Here’s some simplified code for registering the hooks:

1 <?php 2 add_action('init', 'iisauth_auto_login'); 3 add_action('login_form', 'iisauth_wp_login_form');

Next, implementation! Let’s start with what happens on init:

1 function iisauth_auto_login() { 2 if (!is_user_logged_in() && iisauth_is_lan_user() && iisauth_using_ie()) { 3 iisauth_wp_login_form(); 4 } 5 }

As you can see: whenever we suspect a user is coming from the internal LAN and is using IE, we call the iisauth_wp_login_form() method (which “by accident” also gets triggered when a user is on the login page). Here’s that code:

1 function iisauth_wp_login_form() { 2 // Checks if IIS provided a user, and if not, rejects the request with 401 3 // so that it can be authenticated 4 if (iisauth_is_lan_user() && iisauth_using_ie() && empty($_SERVER["REMOTE_USER"])) { 5 nocache_headers(); 6 header("HTTP/1.1 401 Unauthorized"); 7 ob_clean(); 8 exit(); 9 } else if (iisauth_is_lan_user() && iisauth_using_ie() && !empty($_SERVER["REMOTE_USER"])) { 10 if (function_exists('get_userdatabylogin')) { 11 $username = strtolower(substr($_SERVER['REMOTE_USER'], strrpos($_SERVER['REMOTE_USER'], '\\') + 1)); 12 13 $user = get_userdatabylogin($username); 14 if (!is_a($user, 'WP_User')) { 15 // Create the user 16 $newUserId = iisauth_create_wp_user($username); 17 if (!is_a($newUserId, 'WP_Error')) { 18 $user = get_userdatabylogin($username); 19 } 20 } 21 22 if ($user && $username == $user->user_login) { 23 // Clean buffers 24 ob_clean(); 25 26 // Feed WordPress a double-MD5 hash (MD5 of value generated in check_passwords) 27 $password = md5($user->user_pass); 28 29 // User is now authorized; force WordPress to use the generated password 30 $using_cookie = true; 31 wp_setcookie($user->user_login, $password, $using_cookie); 32 33 // Redirect and stop execution 34 $redirectUrl = home_url(); 35 if (isset($_GET['redirect_to'])) { 36 $redirectUrl = $_GET['redirect_to']; 37 } 38 wp_redirect($redirectUrl); 39 exit; 40 } 41 } 42 } 43 }

What happens here is that the authentication header is sent when needed, and once a user is provided by IIS we just log the user in to Wordpress and redirect him. The real “magic” is in this part:

1 // Checks if IIS provided a user, and if not, rejects the request with 401 2 // so that it can be authenticated 3 if (iisauth_is_lan_user() && iisauth_using_ie() && empty($_SERVER["REMOTE_USER"])) { 4 nocache_headers(); 5 header("HTTP/1.1 401 Unauthorized"); 6 ob_clean(); 7 exit(); 8 }

Which does exactly what I described before in this post…

Download

Well of course, feel free to use this plugin! Here’s the source code: iisauth.zip (1.44 kb)

(And big thanks to our marketing manager for allowing me to distribute this little plugin! Again proof for the no-nonsense spirit at RealDolmen!)


Windows Azure SDK for PHP v3.0.0 BETA released

imageMicrosoft and RealDolmen are very proud to announce the availability of the Windows Azure SDK for PHP v3.0.0 BETA on CodePlex. This releases is something we’ve been working on in the past few weeks, implementing a lot of new features that enable you to fully leverage the Windows Azure platform from PHP.

This release is BETA software, which means it is feature complete. However, since we have one breaking change, we’re releasing a BETA first to ensure every edge case is covered. Of you are using the current version of the Windows Azure SDK for PHP, feel free to upgrade and let us know your comments.

A comment we received a lot for previous versions was the fact that for table storage, datetime values were returned as strings and parsing of them was something you as a developer should do. In this release, we’ve broken that: table storage entities now return native PHP DateTime objects instead of strings for Edm.DateTime properties.

The feature we’re most proud of is the support for the management API: you can now instruct WIndows Azure from PHP, where you would normally do this through the web portal. This means that you can fully automate your Windows Azure deployment, scaling, … from a PHP script. I even have sample of this, check my blog post “Windows Azure and scaling: how? (PHP)”.

Another nice feature is the new logging infrastructure: if you are used to working with loggers and appenders (like for example in Zend Framework), this should be familiar. It is used to provide logging capabilities in a mayor production site, www.hotelpeeps.com (yes, that is PHP on Windows Azure you’re seeing there!). Thanks, Lucian, for contributing this!

Last but not least: the session handler has been updated. It relied on table storage for storing session data, however large session objects were not supported since table storage has a maximum amount of data per record. If you are creating large session objects (which I do not recommend, as a best practice), feel free to pass a blob storage client to the session handler instead to have sessions stored in blob storage.

To close this post, here’s the official changelog:

  • Breaking change: Table storage entities now return DateTime objects instead of strings for Edm.DateTime properties
  • New feature: Service Management API in the form of Microsoft_WindowsAzure_Management_Client
  • New feature: logging infrastructure on top of table storage
  • Session provider now works on table storage for small sessions, larger sessions can be persisted to blob storage
  • Queue storage client: new hasMessages() method
  • Introduction of an autoloader class, increasing speed for class resolving
  • Several minor bugfixes and performance tweaks

Get it while it’s hot: http://phpazure.codeplex.com/releases/view/64047

Do you prefer PEAR? Well... pear channel-discover pear.pearplex.net & pear install pearplex/PHPAzure should do the trick. Make sure you allow BETA stability packages in order to get the fresh bits.

PS: We’re running a PHP on Windows Azure contest in Belgium and surrounding countries. The contest is closed for registration, but there’s good value in the blog posts coming out of it. Check www.phpazurecontest.com for more details.


Authenticate Orchard users with AppFabric Access Control Service

From the initial release of Orchard, the new .NET CMS, I have been wondering how difficult (or easy) it would be to integrate external (“federated”) authentication like Windows Azure AppFabric Access Control Service with it. After a few attempts, I managed to wrap-up a module for Orchard which does that: Authentication.Federated.

After installing, configuring and enabling this module, Orchard’s logon page is replaced with any SAML 2.0 STS that you configure. To give you a quick idea of what this looks like, here are a few screenshots:

Orchard Log On link is being overriddenOrchard authentication via AppFabricOrchard authenticated via SAML - Username is from the username claim

As you can see from the sequence above, Authentication.Federated does the following:

  • Override the default logon link
  • Redirect to the configured STS issuer URL
  • Use claims like username or nameidentifier to register the external user with Orchard. Optionally, it is also possible to configure roles through claims.

Just as a reference, I’ll show you how to configure the module.

Configuring Authentication.Federated – Windows Azure AppFabric side

In my tests, I’ve been using the AppFabric LABS release, over at https://portal.appfabriclabs.com. From there, create a new namespace and configure Access Control Service with the following settings:

Identity Providers

  • Pick the ones you want… I chose Windows Live ID and Google

Relying Party Applications

Add your application here, using the following settings:

  • Name: pick one :-)
  • Realm: The http(s) root URL for your site. When using a local Orchard CMS installation on localhost, enter a non-localhost URL here, e.g. https://www.examle.org
  • Return URL: The root URL of your site. I chose http://localhost:12758/ here to test my local Orchard CMS installation
  • Error URL: anything you want
  • Token format: SAML 2.0
  • Token encryption: none
  • Token lifetime: anything you want
  • Identity providers: the ones you want
  • Rule groups: Create new rule group
  • Token signing certificate: create a Service Namespace token and upload a certificate for it. This can be self-signed. Ensure you know the certificate thumbprint as we will need this later on.

Edit Rule Group

Edit the newly created rule group. Click “generate” to generate some default rules for the identity providers chosen, so that nameidentifier and email claims are passed to Orchard CMS. Also, if you want to be the site administrator later on, ensure you issue a roles claim for your Google/Windows Live ID, like so:

Add a role claim for your administrator

Configuring Authentication.Federated – Orchard side

In Orchard, download Authentication.Federated from the modules gallery and enable it. After that, you’ll find the configuration settings under the general “Settings” menu item in the Orchard dashboard:

Authentication.Federated configuration

These settings speak for themselves mostly, but I want to give you some pointers:

  • Enable federated authentication? – Enables the module. Ensure you’ve first tested the configuration before enabling it. If you don’t, you may lose access to your Orchard installation unless you do some database fiddling…
  • Translate claims to Orchard user properties? – Will use claims values to enrich user data.
  • Translate claims to Orchard roles? – Will assign Orchard roles based on the Roles claim
  • Prefix for federated usernames (e.g. "federated_") – Just a prefix for federated users.
  • STS issuer URL – The STS issuer URL, most likely the root for your STS, e.g. .accesscontrol.appfabriclabs.com">https://<account>.accesscontrol.appfabriclabs.com
  • STS login page URL – The STS’ login page, e.g. .accesscontrol.appfabriclabs.com:443/v2/wsfederation">https://<account>.accesscontrol.appfabriclabs.com:443/v2/wsfederation
  • Realm – The realm configured in the Windows Azure AppFabric Access Control Service settings
  • Return URL base – The root URL for your website
  • Audience URL – Best to set this identical to the realm URL
  • X509 certificate thumbprint (used for issuer URL token signing) – The token signing certificate thumbprint

Categories: ASP.NET | C# | General | ICT | MVC | Orchard | Projects | Security

Thank you for getting me in Vegas!

I wish to thank everyone who has been voring for getting me in Vegas, speaking at MIX11. Without having expectations, I was really really surprised (and happy!) my session got selected. Thanks a bunch!

MIX11_BB_I'mSpeakingAt_2

Oh and thanks, RealDolmen, for supporting me in doing things like this!


Categories: ASP.NET | C# | General | ICT | MVC | MEF | Projects | Presentations

MvcSiteMapProvider 3.0.0 released

Just a quick note to tell that MvcSiteMapProvider 3.0.0 has been released and is available on CodePlex and NuGet. This version is targeted at ASP.NET MVC 3. If you are still using ASP.NET MVC 2, no worries: version 2.3.1 contains the exact same functionality but is targeted at ASP.NET MVC 2.

The changelog:

Enjoy!


Categories: ASP.NET | C# | General | ICT | MVC | Software | Projects

ASP.NET MVC and the Managed Extensibility Framewok on NuGet

imageIf you search on my blog, there’s a bunch of posts where I talk about ASP.NET MVC and MEF. And what’s cool: these posts are the ones that are actually being read quite often. I’m not sure about which bloggers actually update their posts like if it was software, but I don’t. Old posts are outdated, that’s the convention when coming to my blog. However I recently received a on of questions if I could do something with ASP.NET MVC 3 and MEF. I did, and I took things seriously.

I’m not sure if you know MefContrib. MefContrib is a community-developed library of extensions to the Managed Extensibility Framework (MEF). I decided to wear my bad-ass shoes and finally got around installing a Windows-friendly Git client and decided to just contribute an ASP.NET MVC + MEF component to MefContrib. And while I was at it, I created some NuGet packages for all MefContrib components.

Let’s see how easy it is to use ASP.NET MVC and MEF…

Here’s the sample code I used: MefMvc.zip (698.58 kb)

Obtaining MefContrib.MVC3 in an ASP.NET MVC application

Here’s the short version of this blog post section for the insiders: Install-Package MefContrib.MVC3

Assuming you have already heard something about NuGet, let’s get straight to business. Right-click your ASP.NET MVC project in Visual Studio and select “Add Library Package Reference…”. Search for “MefContrib.MVC3”. Once found, click the “Install” button.

This action will download and reference the new MefContrib.Web.Mvc assembly I contributed as well as the MefContrib package.

How to get started?

You may notice a new file “AppStart_MefContribMVC3.cs” being added to your project. This one is executed at application start and wires all the MEF-specific components into ASP.NET MVC 3. Need something else than our defaults? Go ahead and customize this file. Are you happy with this code block? Continue reading…

You may know that MEF is cool as ICE and thus works with Import, Compose and Export. This means that you can now start composing your application using [Import] and [Export] attributes, MefContrib will do the rest. In earlier posts I did, this also meant that you should decorate your controllers with an [Export] attribute. Having used this approach on many projects, most developers simply forget to do this at the controller model. Therefore, MefContrib.Web.Mvc  uses the ConventionCatalog from MefContrib to automatically export every controller it can find. Easy!

To prove it works, open your FormsAuthenticationService class and add an ExportAttribute to it. Like so:

1 [Export(typeof(IFormsAuthenticationService))] 2 public class FormsAuthenticationService : IFormsAuthenticationService 3 { 4 // ... 5 }

Do the same for the AccountMembershipService class:

1 [Export(typeof(IMembershipService))] 2 public class AccountMembershipService : IMembershipService 3 { 4 // ... 5 }

Now open up the AccountController and lose the Initialize method. Yes, just delete it! We’ll tell MEF to resolve the IFormsAuthenticationService and IMembershipService. You can even choose how you do it. Option one is to add properties for both and add an ImportAttribute there:

1 public class AccountController : Controller 2 { 3 [Import] 4 public IFormsAuthenticationService FormsService { get; set; } 5 6 [Import] 7 public IMembershipService MembershipService { get; set; } 8 9 // ... 10 }

The other option is to use an ImportingConstructor:

1 public class AccountController : Controller 2 { 3 public IFormsAuthenticationService FormsService { get; set; } 4 public IMembershipService MembershipService { get; set; } 5 6 [ImportingConstructor] 7 public AccountController(IFormsAuthenticationService formsService, IMembershipService membershipService) 8 { 9 FormsService = formsService; 10 MembershipService = membershipService; 11 } 12 }

Now run your application, visit the AccountController and behold: dependencies have been automatically resolved.

Conclusion

There’s two conclusions to make: MEF and ASP.NET MVC3 are now easier than ever and available through NuGet. Second: MefContrib is now also available on NuGet, featuring nifty additions like the ConventionCatalog and AOP-style interception.

Enjoy! Here’s the sample code I used: MefMvc.zip (698.58 kb)

Need domain registration?


Categories: ASP.NET | C# | General | ICT | MEF | MVC | Projects

Tools for the lazy: Templify and NuGet

In this blog post, I will cover two interesting tools that, when combined, can bring great value and speed at the beginning of any new software project that has to meet standards that are to be re-used for every project. The tools? Templify and NuGet.

You know the drill. Starting off with a new project usually consists of boring, repetitive tasks, often enforced by (good!) practices defined by the company you work for (or by yourself for that company). To give you an example of a project I’ve recently done:

  1. Create a new ASP.NET MVC application in Visual Studio
  2. Add 2 new projects: <project>.ViewModels and <project>.Controllers
  3. Do some juggling by moving classes into the right project and setting up the correct references between these projects

Maybe you are planning to use jQuery UI?

  1. Add the required JavaScript and CSS files to the project.

Oh right and what was that class you needed to work with MEF inside ASP.NET MVC? Let’s add that one as well:

  • Add the class for that
  • Add a reference to System.ComponentModel.Composition to the project

Admit it: these tasks are boring, time consuming and boring. Oh and time consuming. And boring. What if there were tools to automate a lot of this? And when I say a lot, I mean a LOT! Meet Templify and NuGet.

Introduction to Templify and NuGet

Well, let me leave this part to others. Let’s just do the following as an introduction: Templify is a tool that automates solution setup for Visual Studio in a super simple manner. It does not give you a lot of options, but that’s OK. Too much options are always bad. Want to read more on Templify? Check Howard van Rooijen’s introductory post.

NuGet (the package manager formerly known as NuPack) is a package manager for Visual Studio. It’s simple and powerful. Check Scott Hanselman’s excellent introduction post on this.

Scenario

Let’s go with the scenario I started my blog post with. You want to automate the boring tasks that are required at every project start. Here’s a simple one, usually it’s even more.

  1. Create a new ASP.NET MVC application in Visual Studio
  2. Add 2 new projects: <project>.ViewModels and <project>.Controllers
  3. Do some juggling by moving classes into the right project and setting up the correct references between these projects

Oh right and what was that class you needed to work with MEF inside ASP.NET MVC? Let’s add that one as well:

  • Add the class for that
  • Add a reference to System.ComponentModel.Composition to the project

Let’s automate the first part using Templify and the second part using NuGet.

Creating the Templify package

I have some bad news for you: you’ll have to take all project setup steps one more time! Create a new solution with a common name, e.g. “templateproject”. Add project references, library references, anything you need for this project to be the ideal base solution for any new project. Here’s an overview of what I am talking about:

Create new Templify project

Next, close Visual Studio and browse to the solution’s root folder location. After installing Templify, a new contect-menu item will be available: “Templify this folder”. Click it!

Templify this folder

After clicking it, a simple screen will be presented, asking you for 4 simple things: Name, Token, Author and Version. Easy! Name is the name for the package. Token is the part of the project name / namespace name / whatever you want to have replace with the next project’s common name. In my case, this will be “templateproject”. Author and version are easy as well.

Templify main screen

Click “Templify”, and behold! Nothing seems to have happened! Except for a small notification in your systray area. But don’t fear: a package has been created for your project and you can now execute the first steps of the scenario described above.

Templify package created

That’s basically it. If you want to redistribute your Templify package, check the C:\Users\%USERNAME%\AppData\Roaming\Endjin\Templify\repo  folder for that.

Creating a NuGet package

For starters, you will need the nuget.exe command-line utility. If that prerequisite is on your machine, you are already half-way. And to be honest: if you read the documentation over at the NuGet CodePlex project page you are there all the way! But I’ll give you a short how-to. First, create a folder structure like this:

  • content (optional)
  • lib (optional)
  • <your package name>.nuspec

In the content folder, simply put anything you would like to add into the project. ASP.NET MVC Views, source code, anything. In the lib folder, add all assembly references tatshould be added.

Next, edit the <your package name>.nuspec file and add relevant details for your package:

1 <?xml version="1.0"?> 2 <package xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3 xmlns:xsd="http://www.w3.org/2001/XMLSchema"> 4 <metadata xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd"> 5 <id>MefDependencyResolver</id> 6 <version>0.0.1</version> 7 <authors>Maarten Balliauw</authors> 8 <requireLicenseAcceptance>false</requireLicenseAcceptance> 9 <description>MefDependencyResolver</description> 10 <summary>MefDependencyResolver</summary> 11 <language>en-US</language> 12 </metadata> 13 </package>

Once that’s done, simply call nuget.exe like so: nuget pack MefDependencyResolver\mefdependencyresolver.nuspec
Note that this can also be done using an MSBUILD command in any project.

If NuGet is finished, a new package should be available, in my above situation the MefDependencyResolver.0.0.1.nupkg file is generated.

Creating a NuGet feed

This one’s easy. You can use an OData feed (see here and here), but what’s even easier: just copy all packages to a folder or network share and point Visual Studio there. Fire up those Visual Studio settings, find the Package Manager node and add your local or network package folder:

Creating a NuGet feed

Done!

Behold! A new project!

So you took all the effort in creating a Templify and NuGet package. Good! Here’s how you can benefit. Whenever a new project should be started, open op an Explorer window, create a new folder, right-click it and select “Templify here”. Fill out the name of the new project (I chose “ProjectCool” because that implies I’m working on a cool project and cool projects are fun!). Select the template to deploy. Next, click “Deploy template”.

Templify Deploy Template

Open up the folder you just created and behold: “ProjectCool” has been created and my first 3 boring tasks are now gone. If I don’t tell my boss I have this tool, I can actually sleep for the rest of the day and pretend I have done this manually!

ProjectCool has been Templified!

Next, open up “ProjectCool” in Visual Studio. Right-click the ASP.NET MVC project and select “Add library package reference…”.

Add library package reference

Select the feed you just created and simply pick the packages to install into this application. Need a specific set of DiaplayTemplates? Create a package for those. Need the company CSS styles for complex web applications? Create a package for that! Need jQuery UI? Create a package for that!

Install NuGet package

Conclusion

I’m totally going for this approach! It speeds up initial project creation without the overhead of maintaining automation packages and such. Using simple tooling that is easy to understand, anyone on your project team can take this approach, both for company-wide Templify and NuGet packages, as well as individual packages.

Personally, I would like to see these two products combined into one, in the scenario outlined here. However I would already be happy if I could also create a company-wide “Templify” feed, ideally integrated with the NuGet tooling.

For fun and leasure, I packaged everything I created in this blog post: TemplifyNuGet.zip (508.23 kb)


Categories: ASP.NET | C# | General | ICT | MVC | Projects | Software

MvcSiteMapProvider 2.2.0 released

I’m proud to announce that MvcSiteMapProvider 2.2.0 has just been uploaded to CodePlex. It should also be available through NuPack in the coming hours. This release has taken a while, but that’s because I’ve been making some important changes...

MvcSiteMapProvider is, as the name implies, an ASP.NET MVC SiteMapProvider implementation for the ASP.NET MVC framework. Targeted at ASP.NET MVC 2, it provides sitemap XML functionality and interoperability with the classic ASP.NET sitemap controls, like the SiteMapPath control for rendering breadcrumbs and the Menu control.

In this post, I’ll give you a short update on what has changed as well as some examples on how to use newly introduced functionality.

Changes in MvcSiteMapProvider 2.2.0

  • Increased stability
  • HtmlHelpers upgraded to return MvcHtmlString
  • Templated HtmlHelpers have been introduced
  • New extensibility point: OnBeforeAddNode and OnAfterAddNode
  • Optimized sitemap XML for search engine indexing

Templated HtmlHelpers

The MvcSiteMapProvider provides different HtmlHelper extension methods which you can use to generate SiteMap-specific HTML code on your ASP.NET MVC views like a menu, a breadcrumb (sitemap path), a sitemap or just the current node’s title.

All helpers in MvcSiteMapProvider are make use of templates: whenever a node in a menu is to be rendered, a specific partial view is used to render this node. This is based on the idea of templated helpers. The default templates that are used can be found on the downloads page. Locate them under the Views/DisplayTemplates folder of your project to be able to customize them.

When creating your own templates for MvcSiteMapProvider's helpers, the following model objects are used and can be templated:

  • Html.MvcSiteMap().Menu() uses:
    MvcSiteMapProvider.Web.Html.Models.MenuHelperModel and MvcSiteMapProvider.Web.Html.Models.SiteMapNodeModel
  • Html.MvcSiteMap().SiteMap() uses:
    MvcSiteMapProvider.Web.Html.Models.SiteMapHelperModel and MvcSiteMapProvider.Web.Html.Models.SiteMapNodeModel
  • Html.MvcSiteMap().SiteMapPath() uses:
    MvcSiteMapProvider.Web.Html.Models.SiteMapPathHelperModel and MvcSiteMapProvider.Web.Html.Models.SiteMapNodeModel
  • Html.MvcSiteMap().SiteMapTitle()
    MvcSiteMapProvider.Web.Html.Models.Situses:eMapTitleHelperModel

The following template is an example for rendering a sitemap node represented by the MvcSiteMapProvider.Web.Html.Models.SiteMapNodeModel model.

1 <%@ Control Language="C#" Inherits="System.Web.Mvc.ViewUserControl<MvcSiteMapProvider.Web.Html.Models.SiteMapNodeModel>" %> 2 <%@ Import Namespace="System.Web.Mvc.Html" %> 3 4 <% if (Model.IsCurrentNode && Model.SourceMetadata["HtmlHelper"].ToString() != "MvcSiteMapProvider.Web.Html.MenuHelper") { %> 5 <%=Model.Title %> 6 <% } else if (Model.IsClickable) { %> 7 <a href="<%=Model.Url %>"><%=Model.Title %></a> 8 <% } else { %> 9 <%=Model.Title %> 10 <% } %>

New extensibility point

In the previous release, a number of extensibility points have been introduced. I blogged about them before. A newly introduced extensibility point is the ISiteMapProviderEventHandler . A class implementing MvcSiteMapProvider.Extensibility.ISiteMapProviderEventHandler can be registered to handle specific events, such as when adding a SiteMapNode.

Here’s an example to log all the nodes that are being added to an MVC sitemap:

1 public class MySiteMapProviderEventHandler : ISiteMapProviderEventHandler 2 { 3 public bool OnAddingSiteMapNode(SiteMapProviderEventContext context) 4 { 5 // Should the node be added? Well yes! 6 return true; 7 } 8 9 public void OnAddedSiteMapNode(SiteMapProviderEventContext context) 10 { 11 Trace.Write("Node added: " + context.CurrentNode.Title); 12 } 13 }

Optimized sitemap XML for SEO

Generating a search-engine friendly list of all nodes in a sitemap was already possible. This functionality has been vastly improved with two new features:

  • Whenever a client sends an HTTP request header with Accept-encoding set to a value of gzip or deflate, the XmlSiteMapResult class (which is also used internally in the XmlSiteMapController) will automatically compress the sitemap using GZip compression.
  • Whenever a sitemap exceeds 50.000 nodes, the XmlSiteMapController will automatically split your sitemap into a sitemap index file (sitemap.xml) which references sub-sitemaps (sitemap-1.xml, sitemap-2.xml etc.) as described on http://www.sitemaps.org/protocol.php.

For example, if a website contains more than 50.000 nodes, the sitemap XML that is generated will look similar to the following:

1 <?xml version="1.0" encoding="utf-8" ?> 2 <sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"> 3 <sitemap> 4 <loc>http://localhost:1397/sitemap-1.xml</loc> 5 </sitemap> 6 <sitemap> 7 <loc>http://localhost:1397/sitemap-2.xml</loc> 8 </sitemap> 9 </sitemapindex>

This sitemap index links to sub-sitemap files where all nodes are included.


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Using MvcSiteMapProvider throuh NuPack

NuPackProbably you have seen the buzz around NuPack, a package manager for .NET with thight integration in Visual Studio 2010. NuPack is a free, open source developer focused package management system for the .NET platform intent on simplifying the process of incorporating third party libraries into a .NET application during development. If you download and install NuPack into Visual Studio, you can now reference MvcSiteMapProvider with a few simple clicks!

From within your ASP.NET MVC 2 project, right click the project file and use the new “Add Package Reference…” option.

Add package reference

Next, a nice dialog shows up where you can just pick a package and click “Install” to download it and add the necessary references to your project. The packages are retrieved from a central XML feed, but feel free to add a reference to a directory where your corporate packages are stored and install them through NuPack. Anyway: MvcSiteMapProvider. Just look for it in the list and click “Install”.

MvcSiteMapProvider in NuPack

Next, MvcSiteMapProvider will automatically be downloaded, added as an assembly reference, a default Mvc.sitemap file is added to your project and all configuration in Web.config takes place without having to do anything! I’m sold :-)

Disclaimer for some: I’m not saying NuPack is the best package manager out there nor that it is the best original idea ever invented. I do believe that the tight integration in VS2010 will make NuPack a good friend during development: the process of downloading and including third party components in your application becomes frictionless. That’s the aim for NuPack, and also the reason why I believe this tool matters and will matter a lot!


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