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  • Nancy A. 44 posts 175 karma points
    May 23, 2019 @ 20:26
    Nancy A.
    0

    Not able to pass model from view to controller

    Hey, on a page, I loop through a collection of objects that contain fields related to a photo album, to create a page of different albums. I envision linking to a specific photo album page by passing the model from the link to the controller - e.g.;

    @model List<cms.ViewModels.PhotoAlbumVm>

@foreach (var photo in Model)
{
    <div class="col-lg-4 portfolio-item">

            <a href="@photo.PhotoAlbumUrl">
                <img class="card-img-top grow" src="@photo.PhotoAlbumCoverPhoto" alt="placeholder" />
            </a>
            <div class="card-body">
                <a href="@photo.PhotoAlbumUrl">
                    <h4 class="card-title">@photo.PhotoAlbumTitle </h4>
                </a>
                <h5>@photo.PhotoAlbumDate.ToString("MM/dd/yyyy")</h5>
                <p>
                    @photo.PhotoAlbumSummary
                </p>
            </div>
            <a [email protected]("SinglePhotoAlbum", "PhotoGallery", new {model = photo})>Link</a>

    </div>
}

    The URL.Action isn't working, the model that is being passed to that controller is null. How do I go about passing along a specific instance of the object w/ its contents back to the controller?

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  • Nigel Wilson 945 posts 2077 karma points
    May 24, 2019 @ 04:08
    Nigel Wilson
    100

    Hi Nancy

    I might be wrong but you can only pass a simple value in the action, not an object.

    So potentially the following

    <a [email protected]("SinglePhotoAlbum", "PhotoGallery", new {imageId = photo.Id})>Link</a>

    Hope this helps

    Nigel

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  • Nancy A. 44 posts 175 karma points
    May 24, 2019 @ 13:09
    Nancy A.
    0

    Thanks! I suspected that was the case but was surprised to find examples of objects being passed from the view/controller in a Google search - clearly I didn't understand the use case there.

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  • Jonathan Distenfeld 105 posts 618 karma points
    May 24, 2019 @ 11:06
    Jonathan Distenfeld
    0

    Hi Nancy,

    i think Nigel ist right. You can't pass objects in a GET - Request. But you could use newtonsoft.json to convert the object into a json-string and convert it back to your model-type again in your controller.

    See this example: https://www.newtonsoft.com/json/help/html/SerializingJSON.htm

    ~Jonathan

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  • Nancy A. 44 posts 175 karma points
    May 24, 2019 @ 13:10
    Nancy A.
    0

    Perfect! I'll try using this and see what comes out of it. Thank you!

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