Asp.net mvc inheritance controllers

Question

I'm studing asp.net mvc and in my test project I have some problems with inheritance: In my model I use inheritanse in few entities:

public class Employee:Entity { /* few public properties */ }

It is the base class. And descendants:

public class RecruitmentOfficeEmployee: Employee { public virtual RecruitmentOffice AssignedOnRecruitmentOffice { get; set; } } public class ResearchInstituteEmployee: Employee { public virtual ResearchInstitute AssignedOnResearchInstitute { get; set; } }

I want to implement a simple CRUD operations to every descedant.

What is the better way to inplement controllers and views in descendants: - One controller per every descendant; - Controller inheritance;
- Generic controller; - Generic methods in one controller.

Or maybe there is an another way?

My ORM is NHibernate, I have a generic base repository and every repository is its descedant. Using generic controller, I think, is the best way, but in it I will use only generic base repository and extensibility of the system will be not very good.

Please, help the newbie)

bmancini · Accepted Answer · 2011-05-23 13:19:49Z

It really depends on how much shared logic there is and how your want your application to flow.

If most of the logic is the same, I would say reuse a single controller and create views that match each inherited type. You would load the appropriate repository, domain objects, and view depending on the type. The type could be determined by a parameter, routing, or some other lookup determined in an action filter.

Here's an example of doing it by passing in a parameter (the easiest technique IMO):

public class EmployeeController : Controller { public enum EmployeeType { RecruitmentOffice, ResearchInstitute } public ActionResult Details(int id, EmployeeType type) { switch (type) { case EmployeeType.RecruitmentOffice: // load repository // load domain object // load view specific to recruitment office break; case EmployeeType.ResearchInstitute: // load repository // load domain object // load view specific to recruitment office break; } } }

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