.NET Core minification not working for form HttpPost

I’ve followed instructions to implement AspNetCore1 2.3.0 into .NET Core web app. Minification works fine except for single scenario.

I’ve made a simple form that posts to controller, after the post page source isn’t minified.

public class SampleController : Controller
{
    [HttpGet]
    public IActionResult Verify()
    {
        return View(); // Minified
    }

    [HttpPost]
    public IActionResult Verify(FoundersVerifyViewModel viewModel)
    {
        ModelState.AddModelError(string.Empty, "Form posted.");
        return View(); // No minification
    }
}

And the view

@Html.ValidationSummary()
<form asp-controller="Sample" asp-action="Verify" method="post" class="form-horizontal">
    <button type="submit" class="btn btn-default">Verify</button>
</form>

You can’t notice this with “View Page Source” as it makes new request to the page, but it’s apparent if your page displays differently minified/unminified or if you have comments in the html which after form post will appear in the developer tools.

[Taritsyn]

@aras777 @Xeevis This problem is solved in version 2.4.0.

Use the following settings:

services.AddWebMarkupMin(options =>
	{
		…
	})
	.AddHtmlMinification(options =>
	{
		options.SupportedHttpMethods = new HashSet<string> { "GET", "POST" };
		…
	})
	…
	;

[aras777]

Anyway I was able to fix it by adding line inside post action “Request.Method = “GET”;”, dirty workaround but works till next release 😃