i want something like this :
public class Order
{
public Guid OrderID { get; set; }
public Guid UserId { get; set; }
public DateTime OrderDate { get; set; }
public decimal Amount { get; set; }
public virtual ICollection<OrderDetail> orderDetailByOrderID { get; set; }
public virtual MembershipUser userByOrderID { get; }
}
so from above code i want membership user to be access from Order object ....
however i tried it but its not working.
so please suggest some solution if you have come across this type situation
It sounds like you might be using Entity Framework Code First. If this is the case you'd probably want:
public virtual aspnet_Membership userByOrderID { get; set; }
instead of
public virtual MembershipUser userByOrderID { get; }
That would grab the aspnet_Membership entity that is tied to the UserId foreign key. The aspnet_Membership class is not quite the same as the MembershipUser entity, but they have many of the same properties.
If that won't work, you can always use your Order model as is, and generate a ViewModel that has the MembershipUser object.
public class OrderViewModel
{
public Order Order { get; set; }
public MembershipUser User { get; set; }
}
and create the ViewModel like this before passing it into a view
Order order = EntityDataContext.Orders.First();
var model = new OrderViewModel { Order = order, User = Membership.GetUser(order.UserId) }
Related
My Order class
public class Order
{
[Key]
public int ID { get; set; }
(...)
[ForeignKey("Client")]
public string ClientID { get; set; }
public virtual ApplicationUser Client { get; set; }
[ForeignKey("Trader")]
public string TraderID { get; set; }
public virtual ApplicationUser Trader { get; set; }
[ForeignKey("Driver")]
public string DriverID { get; set; }
public virtual ApplicationUser Driver { get; set; }
}
And my MS Identity ApplicationUser class:
public class ApplicationUser : IdentityUser
{
(...)
public virtual List<Order> Orders { get; set; }
}
As you can see I'd like to have speciffic users in speciffic "role" in Order model. How should I write a code in ApplicationUser to get speciffic lists of Clients, Traders and Drivers? I mean, I'd like to find user in database and then I'd like to have three lists named e.g. AsClient, AsTrader and AsDriver. Right now List<Orders> count is always 0.
Use InversePropertyAttribute:
public class ApplicationUser : IdentityUser
{
//another stuff...
[InverseProperty("Client")]
public virtual ICollection<Order> AsClient { get; set; }
[InverseProperty("Trader")]
public virtual ICollection<Order> AsTrader { get; set; }
[InverseProperty("Driver")]
public virtual ICollection<Order> AsDriver { get; set; }
}
I would suggest you use a little inheritance here.
So you would create three classes that extend ApplicationUser, one for each Trader, Client and Driver. And then on each of these classes have the orders list. Also, on the Order class, change the types from ApplicationUser to the appropriate subtype.
Then as an inheritance strategy you can choose the table per hierarchy and follow the instructions on this link to implement it.
Hope this helps.
i am trying to define a database model in code-first to see and display which user is assigned as a specialist for the record data.
I have a very simple model for the user:
public class User
{
public int ID { get; set; }
public string userName { get; set; }
public string firstName { get; set; }
public string lastName { get; set; }
....
}
Next I have defined two (simple) models which define the data that can be edited by the user and the specialist should be assigned to using a dropdownlist:
public class Order
{
public int ID { get; set; }
public string orderNumber { get; set; }
public int specialistID { get; set; }
public virtual User specialist{ get; set; }
}
public class Part
{
public int ID { get; set; }
public string partNumber { get; set; }
public string description { get; set; }
public int specialistID { get; set; }
public virtual User specialist{ get; set; }
}
What kind of relation between the models can be used without having a navigation property for each table in the User model?
Do I need to use additional tables to define the relationship: User.Id-Order.specialistID and the relationship: User.Id-Part.specialistID ?
Is there a smarter way out-of-the-box by Entity Framework?
Many thanks for your answers.
Pascal
By default when you add forign-key constraint to the many-to-one table the Entity Framework add virtual property to the entity class and virtual ICollection to the User.
I'm having trouble understanding how to implement a ViewModel in Asp.net MVC, I have the following tables:
Form
ID, Data
Report
ID, FormID, Owner, Category, Status, SubmissionDate
ReportValues
ID, ReportID, Title, Value
I'm looking for a way to display and edit Report and ReportValues in the one ViewModel where ReportValues.ReportID = Report.ID
ReportValues will have multiple entries that relate to a Report.
I have had a look at similiar questions on here and tried following a tutorial ( http://techfunda.com/howto/262/list-data-using-viewmodel ) and coming up empty handed.
If you need any more information let me know and thanks in advance for any replies!
Your View Model is nothing more than a class. You can solve this many ways, but here's an example.
Create your 3 classes like you normally would.
public class Form
{
public int Id { get; set; }
public string Data { get; set; }
}
public class ReportValues
{
public int Id { get; set; }
public int ReportId { get; set; }
public string Title { get; set; }
public string Value { get; set; }
}
public class Report
{
public int Id { get; set; }
public int FormId { get; set; }
public string Owner { get; set; }
public string Category { get; set; }
public string Status { get; set; }
public DateTime SubmissionDate { get; set; }
}
Then, create your ViewModel class to include the three above classes like this.
public class ReportViewModel
{
public Form Form { get; set; }
public ReportValues ReportValues { get; set; }
public Report Report { get; set; }
}
In your view you can access your three classes and their properties as you would in your controller. Model.Form.Id
Depending on your data types, ReportValues will likely be a property of Report, but that's entirely up to your data structure. You will need to populate the classes using whatever method you want (Entity Framework, ADO, etc.) before you can pass them to your view and use them.
I am buys designing the model below:
public class LogModel
{
public class UserActivityLogs
{
[Key]
public int id { get; set; }
//Id of the user
public string userId { get; set; }
//Time of the log
public DateTime time { get; set; }
public LogActions action { get; set; }
}
// Types of actions to log
public class LogActions
{
[Key]
public int id { get; set; }
public string name { get; set; }
public string description { get; set; }
}
}
Now what I would like to know is do I need to add a table in the context for Logactions as well as UserActivityLogs or will EF see that the two tables are linked and create the log action table automatically?
Also have I specified my relationships correctly? What I was aiming for is that I can define multiple types of Logactions and then a userlog will then have a single log action associated to it.
First, don't use nested classes, it's a needless complication. Use namespaces to organize classes.
Second, don't use plural names for classes. One instance of class represents one entity. Also, use CamelCase names for properties.
Third, yes, Entity Framework will be aware of the associations between the two classes and create a database model with two tables and a foreign key.
So this leaves you with:
namespace MyApp.LogModel
{
public class UserActivityLog
{
[Key]
public int Id { get; set; }
public string UserId { get; set; }
public DateTime Time { get; set; }
public LogAction LogAction { get; set; }
}
public class LogAction
{
[Key]
public int Id { get; set; }
public string Name { get; set; }
public string Description { get; set; }
}
}
Is there a built-in way of associating persistent model data with an authenticated user in MVC4, or are you supposed to provide your own implementation?
The MSDN tutorials I've read don't suggest how to do it, but I've seen a WebSecurity.CurrentUserId property I could store. For example, a model for a site that allows the user to upload photos:
public class Photo
{
public int Id { get; set; }
public int UserID { get; set; } // Controller sets WebSecurity.CurrentUserId?
public DateTime Created { get; set; }
...
}
Or is there an "MVC way"?
can you not use something like this:
public class Photo
{
public int Id { get; set; }
public int UserID { get; set; }
public DateTime Created { get; set; }
public UserProfile user {get;set;}
...
}
public class UserProfile
{
public int UserID { get; set; }
}