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C# ASP.NET MVC Forms Finishing Our CRUD Web App Creating a Partial View for Our Form

Fahmi Eshaq
Fahmi Eshaq
3,002 Points
Posted by Fahmi Eshaq
Fahmi Eshaq
3,002 Points

Why do we add two @model directives in a view?

Why do we have two model directives in views: one in _EntryForm and the other one in Edit.cshtml?

Here is a snippet from Add.cshtml:

@model Treehouse.FitnessFrog.Models.Entry -------> model directory#1

@{ ViewBag.Title = "Add Entry"; }

<h2>@ViewBag.Title</h2>

@Html.Partial("_EntryForm") -----------> the partial review has model directory i.e. model directory #2

1 Answer

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

:point_right: A "partial" view is still a separate view, even though it is rendered on the same page.

It's not like an "include" which would be just a source code extension. So it can have it's own model.

By default, the same model is passed to the partial, but a different model could be passed to the partial by using an additional argument:

Html.Partial("_PartialName", PartialModel);
Fahmi Eshaq
Fahmi Eshaq
3,002 Points
Fahmi Eshaq
Fahmi Eshaq
3,002 Points

I wonder why this instructor added @model at the top of Add.cshtml when its not necessarily need.

Add.cshtml:

@model Treehouse.FitnessFrog.Models.Entry -----> Not necessary for Add.cshtml since we are not utilizing Model in Add.cshtml.

@{
    ViewBag.Title = "Add Entry";
}

<h2>@ViewBag.Title</h2>

@Html.Partial("_EntryForm")

Since you mentioned "By default, the same model is passed to the partial", so I removed @model Treehouse.FitnessFrog.Models.Entry from _EntryForm and kept it in Add.cshtml only and my code failed. I keep getting this error:

HttpCompileException was unhandled by user code An exception of type 'System.Web.HttpCompileException' occurred in System.Web.dll but was not handled in user code Showing error on line 21: @Html.LabelFor(m => m.Date, new { @class = "control-label" }) in _EntryForm

Any idea why I'm getting this error? Given that "By default, the same model is passed to the partial" passed from Add.cshtml to _EntryForm, so why having @model Treehouse.FitnessFrog.Models.Entry in partial?