c# - 你能用参数做一些像 RoutePrefix 这样的事情吗？

Question

我想知道我是否可以做类似 RoutePrefix("{projectName}/usergroups") 的事情，因为我有很多项目，每个项目都包含用户组。现在，在每个 Usergroup Controller 中，我首先需要获取它所绑定(bind)的 Project。这可能吗？

我尝试了什么

我尝试简单地执行 RoutePrefix("projects/{projectName}") 然后将其传递给 Controller ​​构造函数，但它不是那样工作的。我还尝试在 Controller 级别使用 Route 而不是 RoutePrefix 但我的内部路由不起作用。

代码

[RoutePrefix("projects"), Authorization]
public class UsergroupController : Controller
{
    private readonly Project _project; // i would like to inject it here on constructor
    private readonly Account _account;
    private readonly IProjectRepository _projectRepository;

    public UsergroupController(IAuthorizationService auth, IProjectRepository projectRepository)
    {
        _projectRepository = projectRepository;
        _account = auth.GetCurrentAccount();
    }

    [Route("{projectName}/usergroups"), HttpGet]
    public ActionResult Index(string projectName)
    {
        // the problem that i will need to pass projectName
        // to every action and do this check in every action as well
        //
        // looks like totally ugly code-duplication
        var project = _projectRepository
            .GetByAccountId(_account.Id.ToString())
            .SingleOrDefault(x => x.Name == projectName);

        if (project == null)
        {
            return HttpNotFound();
        }

        // now get all usergroups in this project e.g. project.Usergroups

        return null;
    }
}

Answer 1

你可以有一个带参数的路由前缀，但你的操作方法仍然必须接受参数，就好像它是它们路由的一部分一样。您无法满足 Controller 构造函数的依赖:

[RoutePrefix("{projectName}/usergroups")]
public class UsergroupController : Controller
{
    [Route("")]
    public ActionResult Index(string projectName)
    {
        ...
    }
}