I'm looking to create a solution for a asp.net mvc app that displays unstructured course descriptions that have been scraped from around the web. The web server will be on a web hosting company while the description db will be on a private network, so I'd like to pass the description to the mvc app through a WCF service. For the body of the description do I just want to use a string property...
public class CourseDescription {
// data fields
public string CourseTitle { get; set; }
public int Days { get; set; }
public List<DateTime> UpcomingDates { get; set; }
// html properties
public string Keywords { get; set;}
public string HtmlDescription { get; set; }
}
... or is there a better way?
If it is unstructured text, a string is fine.
Related
I have the following class:
public class Person
{
public string Name { get; set; }
public string LastName { get; set; }
public int Age { get; set; }
public byte[] PersonPhoto{ get; set; }
}
Usually I implement get objects endpoint, which returns not directly file but path to that file, and second endpoint to retrieve file separately.
Is that any solution which will let me implement it from one endpoint?
Is it a good practice?
Sorry for newbie questions, i'm brand new to MVC and OOP
I have the following model for my USER db table
namespace MyApp.Models
{
public class User
{
public int user_id { get; set; }
public string username { get; set; }
public string password { get; set; }
public string salt { get; set; }
public string email { get; set; }
public sbyte status { get; set; }
public System.DateTime creation_date { get; set; }
public sbyte type { get; set; }
public virtual Doctor Doctor { get; set; }
public virtual Owner Owner { get; set; }
public virtual UserToken UserToken { get; set; }
public virtual Veterinarian Veterinarian { get; set; }
}
}
Actually in order to recall a particular USER based on the mail or the id i use a specific class called CustomDbFunctions
namespace MyApp.Models.DAL
{
public static class CustomDbFunctions
{
public static User GetUserEntityFromEmail(string email, DbContext db)
{
return db.Users.FirstOrDefault(u => u.email == (string)email);
}
}
}
in that way i use in my code
User user = CustomDbFunctions.GetUserEntityFromEmail(email, db)
and this it 100% OK with me, but i don't know if this kind of approach is correct or not, or if there's a better way like
//select the single user by calling only the class USER
User mySelectedUser = new User(email)
Thank you very much.
Well for understanding how to access your data in your MVC4 application you could read this tutorial from the Asp.Net MVC main page. Read the whole tutorial about MVC4 and you'll get a solid idea on how to work with it.
But I also recommend this tutorial on a good Entityframework design pattern, it's called Repository Pattern, I just a nice way to get all your code ordered (like all other patterns). Let me know.
I do have a simple WCF service in which If I put the method with simple Data Type then I can access that service in the MVC project which is in same Solution. But if I change the Data Type of the Service method even to array or list of string or any other simple Data Type, I cannot access the service. Do I need to make any config changes.
[DataContract]
public class Property
{
[DataMember]
public int Id { get; set; }
[DataMember]
public string PropertyPost { get; set; }
[DataMember]
public string PropertyType { get; set; }
[DataMember]
public string DealType { get; set; }
[DataMember]
public string Department { get; set; }
[DataMember]
public string ProjectName { get; set; }
}
I actually want to return the List from the WCF service for which I have created the Datacontract, but it is not working even with simple List Type.
Do we need to specify anything in Service like WebInvoke?
Can any one help?
This is my model on the server side. I don't want to use Entity Framework, how would I generate BreezeJS metadata from the server. Breeze Metadata Format found here http://www.breezejs.com/documentation/breeze-metadata-format doesn't work.
public class User
{
public string Id { get; set; }
public string Name { get; set; }
public List<App> Apps { get; set; }
}
public class App
{
public string Id { get; set; }
public string Name { get; set; }
public Dictionary<string, string> Info { get; set; }
}
Did anyone try complex objects (nested object) similar to above one without using EF.
Using Breeze Metdata API or OData ?
Look at this example http://www.breezejs.com/samples/nodb it should give you a clue.
I get this webservice error sometimes on a SL5 + EF + WCF app.
"Parameter 'role' of domain operation entry 'AddUserPresentationModelToRole' must be one of the predefined serializable types."
here is a similar error, however his solution doesn't work for me.
I have the codegenned DomainService which surfaces the database entities to my client:
[EnableClientAccess()]
public partial class ClientAppDomainService : LinqToEntitiesDomainService<ClientAppUserEntitlementReviewEntities>
{
public IQueryable<Account> GetAccounts()
{
return this.ObjectContext.Accounts;
}
//..etc...
and my custom service which is surfacing a Presentation model, and db entities.
[EnableClientAccess]
[LinqToEntitiesDomainServiceDescriptionProvider(typeof(ClientAppUserEntitlementReviewEntities))]
public class UserColourService : DomainService
{
[Update(UsingCustomMethod = true)]
public void AddUserPresentationModelToRole(UserPresentationModel userPM, Role role, Reviewer reviewer)
{
...
}
public IDictionary<long, byte> GetColourStatesOfUsers(IEnumerable<RBSUser> listOfUsers, string adLogin)
{
//....
}
}
and the PresentationModel:
public class UserPresentationModel
{
[Key]
public long UserID { get; set; }
public byte UserStatusColour { get; set; }
public string MessageText { get; set; }
[Include]
[Association("asdf", "UserID", "UserID")]
public EntityCollection<Account> Accounts { get; set; }
public DateTime AddedDate { get; set; }
public Nullable<long> CostCentreID { get; set; }
public DateTime? DeletedDate { get; set; }
public string EmailAddress { get; set; }
public long EmployeeID { get; set; }
public string FirstName { get; set; }
public Nullable<bool> IsLeaver { get; set; }
public string LastName { get; set; }
public DateTime LastSeenDate { get; set; }
public string LoginDomain { get; set; }
public string LoginName { get; set; }
public byte WorldBuilderStatusID { get; set; }
}
Also cannot get the solution to reliably fail. It seems whenever I change the service slightly ie make it recompile, everything works.
RIAServices unsupported types on hand-built DomainService - seems to be saying the same thing, that decorating the hand built services with the LinqToEntitiesDomainServiceDescriptionProvider should work.
Possible answer here will post back here too with results.
From Colin Blair:
I am a bit surprised it ever works, I don't think I have seen anyone trying to pass additional entiities into a named update before. It might be a bug in RIA Services that it is working at all. What are you trying to accomplish?
Side note, you have a memory leak with your ObjectContext since it is not getting disposed of correctly. Is there a reason you aren't using the LinqToEntitiesDomainSerivce? It would take care of managing the ObjectContext's lifetime for you.
Results:
1) This makes sense. Have refactored out to more sensible parameters now (ints / strings), and all working.
2) Have brought together my 3 separate services into 1 service, which is using the LinqToEntitiesDomainSerivce. The reason I'd split it out before was the assumption that having a CustomUpdate with a PresentationModel didn't work.. and I had to inherit off DomainService instead. I got around this by making a method:
// need this to avoid compile errors for AddUserPresentationModelToRole.. should never be called
public IQueryable<UserPresentationModel> GetUserPresentationModel()
{
return null;
}