RIA Services Essentials

New Post: Too many roles

EvyDP — Fri, 03 Feb 2012 10:47:44 GMT

Hi,

In my application the user can have a lot of roles. They can be even more then 100 roles for a user.

The login works.
But when a ask Authentication.GetUser<User, AuthenticationService>(context); in the CreateDomainService method of the DomainServiceFactory the user is allows empty.

I even tried it in the bookclub example project and this also fails when I give the user 100 roles.

Does anybody have a solution for this?

Thanks,

Evy

New Post: Validation of included entities

dvarrin — Mon, 15 Aug 2011 21:38:28 GMT

Hi,

I'm creating an application using Silverlight and RIA Services. On a page, I'm displaying a Customer entity as well as his address, which is an other entity. For this, in my viewmodel, I've a property of type "Customer" and it's address property is set to a new entity of type "Address".

How can I validate the data when I want to save the Customer? The user should fill the data for the customer and his address. If both are valid, it should create a new "Customer" entity and a new "Address" entity.

If I write customer.Validate(...), it will validate the Customer entity and it will ignore its "Address" entity. Do I have to validate each entity one by one? As the "Address" entity is a property of the "customer" entity, isn't it possible to validate it as all other customer properties?

Daniel Varrin

New Post: How does a NewBee get started

jackwebb22002 — Thu, 05 May 2011 20:35:47 GMT

I just came across this today, and need to know how to log in. I can't find any documentation on current user names/passwords or how to create a new user.

any help would be most appreciated

thanks,

jjw

New Post: Would be great having this project thru NuGet

weitzhandler — Sun, 01 May 2011 22:24:08 GMT

Please add to NuGet library.

Very essential. I use the RiaEssentials in all my Silverlight projects.

The FormsAuthenticationService is a mandatory project and should have been included out-the-box.

Thanks.

New Post: Is there any way to have idle timeouts?

shaneritchie — Tue, 05 Apr 2011 08:04:56 GMT

I am using Ria Essential for my authentication. Is there no way to implement idle timeouts? Is there any way to implement these in WCF Ria services at all?

Thanks,

Shane

New Post: Please rename RIAEssentials to RiaEssentials (lowercase)

weitzhandler — Sun, 13 Feb 2011 08:47:06 GMT

This is by convension.

New Post: Concurrent Queries Multiple Databases

stewartarmbrecht — Thu, 09 Sep 2010 21:29:50 GMT

We are building an application that we hope to host in the cloud. One of the things we are considering is spreading a single clients data across multiple databases. Is it possible to expose one RIA domain service that will then query multiple databases?

public IQueryable<Library> GetLibrariesForUser()
{
	Guid userId = (Guid)Membership.GetUser().ProviderUserKey;
	return from x in this.ObjectContext.Libraries
	   where x.LibraryUsers.Any(y => y.UserId == userId)
	   select x;
}

Is it possible to change the above method of a domain service so that it will run the same query against multiple databases, concurrently, and merge the results together before sending the results to the client?

Thanks!

Stewart

New Post: FormsAuthenticationService does not enable Roles when using a persisted cookie

frazermc — Fri, 20 Aug 2010 11:50:55 GMT

Hi,

I have come across a bug where users are unable to access Role secured resources when they have chosen to persist the cookie between sessions.

In this scenario

LoadUserOperation luo = MyWebContext.Current.Authentication.LoadUser();

is called rather than

LoginOperation lo = MyWebContext.Current.Authentication.Login(new LoginParameters(this.txtUsername.Text, this.txtPassword.Password, this.chkKeepLoggedIn.IsChecked.GetValueOrDefault(false), null));

this means that

if (_enableRoles) {
    FormsAuthenticationHelper.Enable(this.GetType());
}
is never called as it is currently in public TUser Login(string userName, string password, bool isPersistent, string customData)

as a fix I have moved it into the constructor
protected FormsAuthenticationService(bool enableRoles) {
    _enableRoles = enableRoles;
    _cookieLifetime = TimeSpan.FromMinutes(30);
 
    if (_enableRoles) {
        FormsAuthenticationHelper.Enable(this.GetType());
    }
}

New Post: Loading Child Objects

gbhasin76 — Wed, 18 Aug 2010 13:14:11 GMT

I posted this on Nikhil's blog but I figured let me post this here since it is dicussions for RIA services.

We have been working on researching RIA services for our new development initiative. Definetly found the book club application to be very useful. The project we created has a separate project that contains the EntityModel and that is referenced in the domain web service project. In theory there shouldn't be an issue with this approach but for some reason we couldn't get the child objects to load when loading a parent.

I was wondering how to load child entities along with the parent. For example using the book club application entity model, how would I load a Member and his respective books in one call from the client. I noticed on the client data context you can't use Include for the EntityQuery on the domainservice I used the "Include" but noticed the child entity wasn't pulled down to the client. I wouldn't want to make multiple calls to retrieve a parent and the child entities.

New Post: No persistant Cookie created for User

richardebel — Tue, 17 Aug 2010 11:13:58 GMT

public TUser Login(string userName, string password, bool isPersistent, string customData)
        {
            TUser user = ValidateCredentials(userName, password, customData);

            if (user != null)
            {
                string userData = SerializeUser(user);

                FormsAuthenticationTicket ticket =
                    ticket = new FormsAuthenticationTicket(/* version */ 1, userName,
                                                           DateTime.Now, DateTime.Now.Add(CookieLifetime),
                                                           isPersistent,
                                                           userData,
                                                           FormsAuthentication.FormsCookiePath);

                string encryptedTicket = FormsAuthentication.Encrypt(ticket);
                HttpCookie authCookie = new HttpCookie(FormsAuthentication.FormsCookieName, encryptedTicket);
                if (isPersistent)
                    // For some reason "Expires must be set for the cookie itself, or it will not persist across sessions
                    authCookie.Expires = DateTime.Now.Add(CookieLifetime);
                HttpContextBase httpContext = (HttpContextBase)ServiceContext.GetService(typeof(HttpContextBase));

                httpContext.Response.Cookies.Add(authCookie);

                if (_enableRoles)
                {
                    FormsAuthenticationHelper.Enable(this.GetType());
                }
            }

            return user;
        }

New Post: No persistant Cookie created for User

richardebel — Mon, 16 Aug 2010 17:29:30 GMT

When user selects "remember me", persistant cookie is not created.

Change code in FormsAuthenticationService.cs:

public TUser Login(string userName, string password, bool isPersistent, string customData) {
            TUser user = ValidateCredentials(userName, password, customData);

            if (user != null) {
                string userData = SerializeUser(user);

                FormsAuthenticationTicket ticket =
                    ticket = new FormsAuthenticationTicket(/* version */ 2, userName,
                                                           DateTime.Now, DateTime.Now.Add(CookieLifetime),
                                                           isPersistent,
                                                           userData,
                                                           FormsAuthentication.FormsCookiePath);

                string encryptedTicket = FormsAuthentication.Encrypt(ticket);
                //HttpCookie authCookie = new HttpCookie(FormsAuthentication.FormsCookieName, encryptedTicket);
                HttpCookie authCookie = FormsAuthentication.GetAuthCookie(userName, isPersistent,FormsAuthentication.FormsCookiePath);
                authCookie.Expires = DateTime.Now.Add(CookieLifetime);
                authCookie.Value = encryptedTicket;
                HttpContextBase httpContext = (HttpContextBase)ServiceContext.GetService(typeof(HttpContextBase));
                
                httpContext.Response.Cookies.Add(authCookie);

                if (_enableRoles) {
                    FormsAuthenticationHelper.Enable(this.GetType());
                }
            }

            return user;
        }
FormsAuthentication.GetAuthCookie(userName,isPersistent) creates the persistent cookie. The original code does not create the persistent cookie.

New Post: LoadUser fails for default user

richardebel — Sat, 14 Aug 2010 15:54:46 GMT

// This will automatically authenticate a user when using windows authentication
            // or when the user chose "Keep me signed in" on a previous login attempt
            WebContext.Current.Authentication.LoadUser(this.Application_UserLoaded,null);

private void Application_UserLoaded(LoadUserOperation operation)
        {
            if (operation.HasError)
                operation.MarkErrorAsHandled();
        }

The above operation results in an error because the default User object returned from GetUser is null.

I changed the following in FormsAuthenticationService.cs:

/// The default user object.
        protected virtual TUser GetDefaultUser() {
            return new TUser(){ Name = string.Empty } ;
        }

It appears that the new user object needs to have one of it's properties initialized, or it won't get returned from the Server.

New Post: Silverlight MVVM Business Application : Where to place the resource files ?

nikhilk — Wed, 11 Aug 2010 05:28:34 GMT

This is a matter of opinion ultimately. I personally think you're assigning additional semantics to a model. It is the UI/presentation tier that is interpreting those additional semantics/hints to determine how to best process them. Semantics/intent vs. presentation ... subtle distinction. Do you buy that?

New Post: Roles

nikhilk — Wed, 11 Aug 2010 05:26:58 GMT

I do have roles support/usage in the application.

Source code checked in, #74794

_TFSSERVICE — Tue, 03 Aug 2010 19:44:57 GMT

Checked in by server upgrade

New Post: Roles

MiddleTommy — Mon, 26 Jul 2010 15:46:53 GMT

Thats whats weird about it. It is trying to use the standard Asp.Net Roles for a SQL Server that does not exist. My roles are mixed into my DataLayer that is why I am using your Book Club example. I think if you put a RequiresRole attribute in one of your BookClub Domain Services it will have the same problem as mine. To solve this I created a Custom RoleProvider and registered it in web.config. It was actually pretty easy. Perhaps you should add a RoleProvider to your RiaEssentials project that works with your base authentication service. As I think anyone who wants to use Roles with your authentication service (without creating custom Authorizaton Attributes) will need it.

-----Original Message-----
From: "nikhilk" <notifications@codeplex.com>
Sent: Monday, July 26, 2010 7:33am
To: [email removed]
Subject: Re: Roles [riaservices:221313]

From: nikhilk

Based on seeing things like RolePrincipal in your stack trace, it doesn't seem like a question related to this project. For general questions with RIA Services, please post on the appropriate forum.

As a quick answer based on your exception - make sure you've got the right connection string, and that things have been properly initialized in config and in the database.

New Post: Silverlight MVVM Business Application : Where to place the resource files ?

stefh — Mon, 26 Jul 2010 15:13:59 GMT

Hi Nik,

Thank you for your quick and helpful answer on my previous questions.

I've another question on stackoverflow which is about where to place the different resource files and where to define the Display from an attribute.

I've defined the following validation on my User entity in the server-domain layer:

[MetadataTypeAttribute(typeof(User.UserMetadata))]
public partial class User
{
    internal class UserMetadata
    {
        // Metadata classes are not meant to be instantiated.
        protected UserMetadata()
        {
        }

        [Display(Name = "UserNameLabel", ResourceType = typeof(MyResources))]
        [Required(ErrorMessageResourceName = "ValidationErrorRequiredField", ErrorMessageResourceType = typeof(ValidationErrorResources))]
        [RegularExpression("^[a-zA-Z0-9_]*$", ErrorMessageResourceName = "ValidationErrorInvalidUserName", ErrorMessageResourceType = typeof(ValidationErrorResources))]
        public string Name { get; set; }

My questions are:

Is it correct to define the DisplayName in the server-domain layer ? (Domain defines how a property is shown on the Silverlight-Presentation-layer ?)
Where to define the other resource strings which need to be localized ? (Multiple pages use the string "Username", should this defined on the Silverlight-Presentation-layer resource file, or in the service domain layer ?

Best regards,
Stef

New Post: Silverligth MVVM : How to do Localization in the correct way ?

nikhilk — Mon, 26 Jul 2010 14:35:15 GMT

I would do localization in xaml... I don't think I want to write a ton of code in my view model for this.

Essentially my object containing string or other localized values would be instantiated in resources, and I'd set up bindings against that - all declaratively.

New Post: Roles

nikhilk — Mon, 26 Jul 2010 14:33:44 GMT

Based on seeing things like RolePrincipal in your stack trace, it doesn't seem like a question related to this project. For general questions with RIA Services, please post on the appropriate forum.

As a quick answer based on your exception - make sure you've got the right connection string, and that things have been properly initialized in config and in the database.

New Post: Question about validation from a Book

nikhilk — Mon, 26 Jul 2010 14:31:02 GMT

The biggest reason really is to show operation-level validation. Essentially RIA Services support field-level, entity-level, and operation-level validation.