On my blog I have an example of modelbinding a form model:
http://krompaco.nu/2015/01/working-with-your-own-forms-in-episerver-and-mvc/

You have the option to use any controller among Page, Block or DefaultPage I guess.

If you need to keep track of which Block was posting you could construct some kind of identifier, such as CurrentPage.PageLink.ID + "-" + CurrentBlock.ContentLink.ID. If you want to support same block on same page twice you need to add something more (ItemIndex or something). Use the identifier in a hidden element in your block's <form>, for example <input type="hidden" name="formidentifier" value="@FormIdentifier" />. Make sure your FormModels contain a prop named "FormIdentifier".

Off the top of my head... :-)

EDIT: You should use x-@FormIdentifier in your ID's and <label for="x-@FormIdentifier"> I forgot to mention.

Hi Johan and thanks for help!

I was also thinking to use some kind of block / form identifier in order to solve the "label for" issue.

But in that case, how can I make model binders to work with form identifiers?

I’d like to use ModelState.AddModelError to highlight invalid fields and display validation summary.

I guess I have to write controller actions in page controller, not in block controllers, because on each post-back I have to render the entire page + info from ModelState, right?

Is there something else I need to include in the route / hidden fields?

For example, if I use the following code:

<form action="MyAction" method="Post">

This works fine if I:
- go to start page
- Click on the link that takes me to domain.com/my-page
- submit the form and use return View("Index", myModel); in controller action
- asp.net will redirect me to domain.com/my-page/MyAction, which is fine

But if I open a new instance of browser, navigate directly to domain.com/my-page and submit the form, this time asp.net will redirect me to domain.com/MyAction (notice that my-page part is missing), which returns 404.

I found this article: http://epiwiki.se/developing/mvc/sample-how-to-use-post-backs-in-episerver-mvc

Haven’t tested it yet :)