后处理程序上的部分页面模型未执行 ASP.NET Core Razor Pages 2.0

Question

I have a partial view with a page model. In the page model class I have the OnPost handler which is not being called when the form is submitted.

_Subscribe.cshtml

@page
@model Shared._SubscribeModel

<div id="subscribe-for-updates">
    <h4>Subscribe to keep up-to-date with any changes.</h4>
    <form method="post">
        <input type="email" name="email" placeholder="yourname@example.com" />
        <input type="submit" value="Subscribe"/>
    </form>
</div>

_Subscribe.cshtml.cs

public class _SubscribeModel : PageModel
{
        public void OnGet()
        {

        }

        public async Task<IActionResult> OnPostAsync(string email)
        {
            if (!ModelState.IsValid)
            {
                return Page();
            }

            await Task.Run(() =>
            {
                //do something
            });

            return RedirectToPage();
        }
}

Now, the partial view is being rendered in the home page.

Index.cshtml

@page
@model IndexModel
@{
    ViewData["Title"] = "Welcome";
}

<h2>Hello, Welcome to my website!</h2>

<partial name="_Subscribe" model="Model.SubscribeModel" />

Index.cshtml.cs

public class IndexModel : PageModel
    {
        public IndexModel()
        {
            SubscribeModel = new _SubscribeModel();
        }

        public _SubscribeModel SubscribeModel { get; }

        public void OnGet()
        {

        }
    }

I did some research and found out that the code behind partial views is not automatically executed like normal pages which means that I have to explicitly call OnPost but this seems wrong.

Am I doing something wrong?

Any help would be appreciated.

Answer 1

Partial Views should not have PageModel files. They are essentially widgets that get rendered into the calling page and become part of that. Your OnPostAsync method should be added to the PageModel class of the calling page.