Posting back custom collections in ASP.NET MVC2

Question

I have an generic enumerable of type BookCover that I wan't to display to the user. They can only choose one book cover from the selection available.

 public class BookCover {
        public bool IsSelected { get; set; }
        public string CoverPathThumb { get; set; }
        public string SpinePathThumb { get; set; }
        public string BackPathThumb { get; set; }
    }

My action method is similar to

public ActionResult SelectCover(IEnumerable<BookCover> covers);

In my template I just enumerate and write out the desired HTML but the problem is I don't know how to get the data from the post back.

How do I name my <input> id's? Is there another reason IEnumerabme isn't populating when the post back occurs?

Community · Accepted Answer · 2017-05-23 12:04:14Z

2

@Vince: You can customize the ModelBinder. And in the ModelBinder, you can get data from HttpContext.Request.Form, after that you will build your new BookCover collection. Finallly you call

public ActionResult SelectCover(IEnumerable<BookCover> covers);

And remember registering it in Global.asax as:

ModelBinders.Binders[typeof(IEnumerable<BookCover>)] = new YourModelBinderName();

You can get references at here and here is discussion about it. Hope this help you!

edited May 23, 2017 at 12:04

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answered Dec 16, 2010 at 12:15

thangchung

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Comments

Jan Aagaard · Accepted Answer · 2010-12-16 09:56:59Z

0

You should add an ID you BookCover type, and then use this ID to identify the cover that the user selected. If you retrieve your covers from a database, just use this ID in your class.

answered Dec 16, 2010 at 9:56

Jan Aagaard

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synepis · Accepted Answer · 2010-12-16 10:01:53Z

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I think you can do something like this:

<% foreach(var item in covers) { %>
     <%: Html.EditorFor(x => item.IsSelected) %>
<% } %>

answered Dec 16, 2010 at 10:01

synepis

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drew · Accepted Answer · 2010-12-16 10:06:28Z

0

The name of your inputs should be in the form:

covers[0].IsSelected
covers[0].CoverPathThumb
covers[0].SpinePathThumb 
covers[0].BackPathThumb

E.g.

<input type="text" name="covers[0].CoverPathThumb" />

Increase 0 for each cover entry.

answered Dec 16, 2010 at 10:06

drew

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