I'm trying to create a tagging system for my project. I need the pass a string (for ex: "test1, test2, test3") which will be binded to an entity as a list.
I'm using EF and my view inherits an entity, defined in EF. Without creating a view model, is it possible to do that?
Quite honestly view models is the way to go here.
But because you asked I will try to answer. IIRC EF models are partial classes, meaning that you could add properties to them, like this:
public partial class MyEFModel
{
public IEnumerable<string> List
{
get
{
return SomeStringProperty.Split(',');
}
set
{
SomeStringProperty = string.Join(",", value.ToArray());
}
}
}
Another way to achieve this is to write a custom model binder, like this:
public class MyBinder : DefaultModelBinder
{
public override object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext)
{
var value = bindingContext.ValueProvider.GetValue(bindingContext.ModelName);
if (value != null)
{
return value.AttemptedValue.Split(',');
}
return base.BindModel(controllerContext, bindingContext);
}
}
public class HomeController : Controller
{
public ActionResult Index(
[ModelBinder(typeof(MyBinder))] IEnumerable<string> values
)
{
return View();
}
}
and then /home/index?values=val1,val2,val3 should bind correctly to the list.
There are couple of ways to achieve this:
These implementations can be found here:
Is it possible to change the querystring variable in ASP.NET MVC path before it hits the controller?
