Security » Authorization » 基于视图的授权

• View Based Authorization¶ 基于视图的授权

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  Often a developer will want to show, hide or otherwise modify a UI based on the current user identity. You can access the authorization service within MVC views via dependency injection. To inject the authorization service into a Razor view use the @inject directive, for example @inject IAuthorizationService AuthorizationService. If you want the authorization service in every view then place the @inject directive into the _ViewImports.cshtml file in the Views directory. For more information on dependency injection into views see Dependency injection into views.

• 开发者经常需要根据当前用户的身份来确定是否展示、隐藏或者是否修改一个页面。你可以通过依赖注入在MVC的视图中使用授权服务。要将授权服务注入Razor视图就要使用@inject 命令，例如@inject IAuthorizationService AuthorizationService。 如果想在左右视图中使用授权服务，就把@inject 命令放置于Views目录内的_ViewImports.cshtml文件中。 更多的依赖注入到视图的信息，请参看Dependency injection into views。

• Once you have injected the authorization service you use it by calling the AuthorizeAsync method in exactly the same way as you would check during resource based authorization.

• 一旦将授权服务注入后，就可通过调用AuthorizeAsync 方法来使用了，就和resource based authorization（基于资源的授权）中进行的检查一模一样。

  @if (await AuthorizationService.AuthorizeAsync(User, "PolicyName"))
  {
      <p>This paragraph is displayed because you fulfilled PolicyName.</p>
  }

  In some cases the resource will be your view model, and you can call AuthorizeAsync in exactly the same way as you would check during resource based authorization;

• 在某些情况下，资源就是你的视图模型，可通过与resource based authorization（基于资源的授权）中一样的方法来调用AuthorizeAsync。

  @if (await AuthorizationService.AuthorizeAsync(User, Model, Operations.Edit))
  {
      <p><a class="btn btn-default" role="button"
          href="@Url.Action("Edit", "Document", new { id = Model.Id })">Edit</a></p>
  }

• Here you can see the model is passed as the resource authorization should take into consideration.

• 在这里，您可以看到该模型被作为资源授权而传递了。

  Warning 注意

  Do not rely on showing or hiding parts of your UI as your only authorization method. Hiding a UI element does not mean a user cannot access it. You must also authorize the user within your controller code.

  不要依赖于显示或隐藏你的用户界面的部分作为你唯一的授权方法。隐藏一个用户界面元素并不意味着用户无法访问它。您还必须授权您的控制器代码中的用户。

   

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