Leveraging a partial view across two different perspectives

Question

Leveraging a partial view across two different perspectives

I am working with a PartialView that is used in two different views, each utilizing its own viewmodel. On one of the views, the code looks like this:

view1:

@model StudentsViewModel
......
.....
@Html.Partial("_StudentOtherInformation")

PartialView

@model StudentsViewModel
@if (Model.StudentList != null)
{
<input type="hidden" id="firstStudent" value= "@Model.StudentList.ElementAt(k-1).StudentID" />
}

view2:

@model SearchViewModel
....
@Html.Partial("_StudentOtherInformation")

When trying to access the viewmodel of view1 within the partial view, I encountered an exception due to confusion between viewmodels. After some research, it seems creating a parent viewmodel containing both individual viewmodels is one solution. However, the challenge lies in the fact that these two viewmodels are in separate namespaces. Is there a way to pass the corresponding viewmodel to the partial view from each of the views?

javascript asp.net asp.net-mvc razor

Answer 1

Answer №1

If you want to pass your ViewModel as the second argument, you can do so by following these steps:

Example for view1:

@model StudentsViewModel
......
.....
@Html.Partial("_StudentOtherInformation", model)

Example for view2:

@model SearchViewModel
....
@Html.Partial("_StudentOtherInformation", model)

Keep in mind that this method doesn't work if you need to pass two different types of ViewModels.

One solution is to create a base class where you place all common properties, and then have your two ViewModels inherit from this base class. It's perfectly fine if they are in different namespaces; just ensure you reference the correct namespaces like this:

public class ParentViewModel
{
    public List<Student> StudentList { get; set; }
}

public class StudentsViewModel : YourNamespace.ParentViewModel
{
     // other properties here
}

public class SearchViewModel: YourNamespace.ParentViewModel
{
     // other properties here
}

Make sure that your partial view is strongly typed to the base-class like this:

Partial View

@model ParentViewModel
@if (Model.StudentList != null)
{
<input type="hidden" id="firstStudent" value= "@Model.StudentList.ElementAt(k-1).StudentID" />
}

Answer 2

If you want to pass your ViewModel as the second argument, you can do so by following these steps:

Example for view1:

@model StudentsViewModel
......
.....
@Html.Partial("_StudentOtherInformation", model)

Example for view2:

@model SearchViewModel
....
@Html.Partial("_StudentOtherInformation", model)

Keep in mind that this method doesn't work if you need to pass two different types of ViewModels.

One solution is to create a base class where you place all common properties, and then have your two ViewModels inherit from this base class. It's perfectly fine if they are in different namespaces; just ensure you reference the correct namespaces like this:

public class ParentViewModel
{
    public List<Student> StudentList { get; set; }
}

public class StudentsViewModel : YourNamespace.ParentViewModel
{
     // other properties here
}

public class SearchViewModel: YourNamespace.ParentViewModel
{
     // other properties here
}

Make sure that your partial view is strongly typed to the base-class like this:

Partial View

@model ParentViewModel
@if (Model.StudentList != null)
{
<input type="hidden" id="firstStudent" value= "@Model.StudentList.ElementAt(k-1).StudentID" />
}

Leveraging a partial view across two different perspectives

Answer №1

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