AspNetCore.Docs/aspnetcore/tutorials/first-mvc-app-mac/adding-model.md

title	author	description	keywords	ms.author	manager	ms.devlang	ms.date	ms.topic	ms.assetid	ms.technology	ms.prod	uid
Add a model to an ASP.NET MVC Core app	rick-anderson	Add a model to a simple ASP.NET Core app.	ASP.NET Core,MVC,scaffold,scaffolding	riande	wpickett	csharp	09/22/2017	get-started-article	8dc28498-eeee-1638-b903-b593059e9f39	aspnet	.net-core	tutorials/first-mvc-app-mac/adding-model

[!INCLUDEadding-model]

• Right-click the Models folder, and then select Add > New File.

• In the New File dialog:

  • Select General in the left pane.
  • Select Empty Class in the center pain.
  • Name the class Movie and select New.

Add the following properties to the Movie class:

[!code-csharpMain]

The ID field is required by the database for the primary key.

Build the project to verify you don't have any errors. You now have a Model in your MVC app.

Prepare the project for scaffolding

• Right click on the project file, and then select Tools > Edit File.

  

• Add the following highlighted NuGet packages to the MvcMovie.csproj file:

  [!code-csharpMain]

• Save the file.

• Create a Models/MvcMovieContext.cs file and add the following MvcMovieContext class: [!code-csharpMain]

• Open the Startup.cs file and add two usings: [!code-csharpMain]

• Add the database context to the Startup.cs file:

  [!code-csharpMain]

  This tells Entity Framework which model classes are included in the data model. You're defining one entity set of Movie objects, which will be represented in the database as a Movie table.

• Build the project to verify there are no errors.

Scaffold the MovieController

Open a terminal window in the project folder and run the following commands:

dotnet restore
dotnet aspnet-codegenerator controller -name MoviesController -m Movie -dc MvcMovieContext --relativeFolderPath Controllers --useDefaultLayout --referenceScriptLibraries 

If you get the error No executable found matching command "dotnet-aspnet-codegenerator", verify:

• You are in the project directory. The project directory has the Program.cs, Startup.cs and .csproj files.
• Your dotnet version is 1.1 or higher. Run dotnet to get the version.
• You have added the <DotNetCliToolReference> elment to the MvcMovie.csproj file.

The scaffolding engine creates the following:

• A movies controller (Controllers/MoviesController.cs)
• Razor view files for Create, Delete, Details, Edit and Index pages (Views/Movies/*.cshtml)

The automatic creation of CRUD (create, read, update, and delete) action methods and views is known as scaffolding. You'll soon have a fully functional web application that lets you manage a movie database.

Add the files to Visual Studio

• Add the MovieController.cs file to the Visual Studio project:

  • Right-click on the Controllers folder and select Add > Add Files.
  • Select the MovieController.cs file.

• Add the Movies folder and views:

  • Right-click on the Views folder and select Add > Add Existing Folder.
  • Navigate to the Views folder, select Views\Movies, and then select Open.
  • In the Select files to add from Movies dialog, select Include All, and then OK.

[!INCLUDEadding-model 2x]

[!INCLUDEadding-model]

You now have a database and pages to display, edit, update and delete data. In the next tutorial, we'll work with the database.

Additional resources

• Tag Helpers
• Globalization and localization

[!div class="step-by-step"] Previous Adding a View Next Working with SQL