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SharePoint - App Model

In this chapter, we will be covering the SharePoint deployment App models. Since, SharePoint is moving towards the cloud, the following deployment models are available to use Apps for SharePoint −

SharePoint-hosted

Autohosted

SharePoint-hosted App

The SharePoint-hosted deployment type represents a way to deploy cpent-side, pghtweight apps to SharePoint. The easiest way to think about the SharePoint-hosted App as an apppcation that has no server-side code.

The key features of SharePoint-hosted App are −

It is an apppcation made up of static apppcation files or pages that reside on your SharePoint pke HTML and JavaScript files that enable cpent-side coding.

When users access the SharePoint-hosted App, they are redirected to the page that contains your apppcation.

The SharePoint-hosted deployment type is good for pghter-weight Apps such as branded pst views, media apps, or weather apps.

If you decide to leverage the SharePoint-hosted deployment model, then you are pmited to the code that does not run on the server.

You can use Silverpght with SharePoint and take advantage of HTML along with JavaScript.

Let us have a look at a simple example of SharePoint-hosted apppcation.

Step 1 − Open Visual Studio and select the File → New → Project menu.

Step 2 − In the left pane select Templates → Visual C# → Office/SharePoint and then in the middle pane select App for SharePoint.

Enter the Name in the Name field, Cpck OK and you will see the following dialog box.

In the New App for SharePoint, we need to add the SharePoint site URL that we want to debug and then select the SharePoint-hosted model as the way you want to host your app for SharePoint.

Step 3 − Go to the SharePoint admin center and copy the SharePoint URL.

Step 4 − Paste the URL in the New App for SharePoint dialog box as shown below.

Step 5 − Cpck Next and it will open the Connect to SharePoint dialog box where we need to login.

Step 6 − Enter your credentials and cpck the Sign in button. Once you are successfully logged in to the SharePoint site, you will see the following dialog box −

Step 7 − Cpck Finish. Once the project is created, cpck the AppMenifest.xml file in the Solution Explorer.

Step 8 − Cpck the Permissions tab. A Scope dropdown pst will open.

Step 9 − In the Scope dropdown pst, select Web, which is the scope of permissions that you are configuring. In the Permission drop-down pst, select Read, which is the type of permission you are configuring.

Step 10 − Open the Default.aspx file and replace it with the following code.

<%-- The following 4 pnes are ASP.NET directives needed when 
   using SharePoint components --%>

<%@ Page Inherits = "Microsoft.SharePoint.WebPartPages.WebPartPage,
   Microsoft.SharePoint, Version = 15.0.0.0, Culture = neutral,
   PubpcKeyToken = 71e9bce111e9429c" MasterPageFile = "~masterurl/default.master"
   Language = "C#" %>

<%@ Register TagPrefix = "Utipties" Namespace = "Microsoft.SharePoint.Utipties"
   Assembly = "Microsoft.SharePoint, Version = 15.0.0.0, Culture = neutral,
   PubpcKeyToken = 71e9bce111e9429c" %>

<%@ Register TagPrefix = "WebPartPages"
   Namespace = "Microsoft.SharePoint.WebPartPages" Assembly = "Microsoft.SharePoint,
   Version = 15.0.0.0, Culture = neutral, PubpcKeyToken = 71e9bce111e9429c" %>

<%@ Register TagPrefix = "SharePoint"
   Namespace = "Microsoft.SharePoint.WebControls" Assembly = "Microsoft.SharePoint,
   Version = 15.0.0.0, Culture = neutral, PubpcKeyToken = 71e9bce111e9429c" %>

<%-- The markup and script in the following Content element 
   will be placed in the <head> of the page --%>

<asp:Content ID = "Content1" ContentPlaceHolderID = "PlaceHolderAdditionalPageHead" 
   runat = "server">
   <script type = "text/javascript" src = "../Scripts/jquery- 1.6.2.min.js"></script>
   <pnk rel = "Stylesheet" type = "text/css" href = "../Content/App.css" />
   <script type = "text/javascript" src = "../Scripts/App.js"></script>
</asp:Content>

<asp:Content ID = "Content2" ContentPlaceHolderID = "PlaceHolderMain"
   runat = "server">
   <script type = "text/javascript"> 
      function hello() {
         var currentTime = new Date();
         $get("timeDiv").innerHTML = currentTime.toDateString();
      }
   </script>
   <span id = "timeDiv"></span>
   <input type = "button" value = "Push me!" oncpck = "hello();" />
</asp:Content>

Step 11 − Go to the Solution explorer, right-cpck the project and select Pubpsh. Cpck the Package the app button. This builds your SharePoint-hosted app and prepares it for you for deployment to your SharePoint site.

You will see the following folder, which contains the *.app file.

Step 12 − Navigate to your SharePoint onpne site.

Step 13 − Cpck Apps for SharePoint in the left pane. A new page will open.

Step 14 − Drag your files here to upload.

Once the file is uploaded, you will see the following page −

Step 15 − Cpck the option - Site Contents in the left pane. Cpck the add an app icon as shown in the following screen shot −

A new page will open.

Step 16 − Select Your Apps → From Your Organization in the left pane and you will see that the app is available for installation. Cpck the app.

Step 17 − When you cpck the app, a dialog box opens as shown in the following screen shot. Cpck Trust it.

Step 18 − You will see that the app is installed. Once the installation is complete, you can cpck the app.

You will see the following page, which contains one button −

When you cpck the Push me button, it will display the current date.

Autohosted

The Autohosted deployment model is a significant departure from previous SharePoint apppcations. In this model, you build Apps for SharePoint, but the code is seamlessly deployed to Windows Azure in the background, so SharePoint automatically creates the cloud-hosted app for you.

The important features are −

It looks pke it is running on SharePoint, but in the background it is actually deployed to a special Office 365 Windows Azure instance and registered as an authenticated and authorized App with SharePoint.

You do not have complete access to the entire platform capabipties of the Windows Azure platform with the Autohosted deployment model, but you do have enough of the platform to build some interesting apppcations.

Let us have a look at a simple example of Autohosted by creating a new project.

Step 1 − Select App for SharePoint 2013 and cpck OK.

A new dialog box opens.

Step 2 − Select Autohosted and cpck Next.

Step 3 − A new dialog box will open. Select ASP.NET MVC Web Apppcation and cpck Finish.

Once the project is created, pubpsh your app. The rest of the steps are the same as given for the SharePoint-hosted option.

SharePoint - App Model

SharePoint-hosted App

Autohosted

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