In my view, I have a partial view that pulls in a list of posts. On the sidebar, there is a list of categories that, when a user clicks on, re-generates the partial view but filtered by category type (pass via query string in the HTML.ActionLink). The category type, in Umbraco, is a custom drop-down list that the editor is to select from for each post (limited to one category). The problem is that the test link generates the following error: "There is no current PublishedContentRequest, it must be initialized before the RenderRouteHandler executes".

What is the best way to go about this, to get this id back to the controller for the query within the partial view?

In the view, I have this:

@inherits Umbraco.Web.Mvc.UmbracoViewPage

@{
    Layout = "webBase.cshtml";
}

@* the fun starts here *@

<section class="section--spacing">
    <div class="container">
        <div class="row">
            <!-- Posting Section
            ================================================== -->
            <div class="col-md-8">
                <div class="post">
                    <h2 class="section__header">News</h2>
                    @{ Html.RenderAction("RenderListOfArticles", "News");}
                </div>
            </div> <!--col-md-9-->

            <div class="col-md-4">

                            <h3>Categories</h3>
                            <ul>

                                @Html.ActionLink("Testing", "RenderListOfArticles", "News", new { category = "currentevents"} )
</div>
                </div>

            </div>
        </div>
    </div>
</section>

The partial view code is as follows:

@model IEnumerable<cms.ViewModels.ArticleVM>


  @foreach (var article in Model)
    {
        <div class="row row--padding row--padding--top post-font">
            <div class="col-md-2">
                <h4 class="date--color">@article.ArticlePublishDate.ToString("MMM dd")</h4>
            </div>
            <div class="col-md-10">
                <a href=""><h4 class="post__title--size">@article.ArticleTitle</h4></a>
                <p class="post__author">@article.ArticleAuthor</p>
                <p>@article.ArticleExcerpt <a href="@article.ArticleUrl">... Read more</a></p>      
            </div>
        </div>
    } 

and then in the News controller, I have

namespace cms.Controllers
{
    public class NewsController : SurfaceController { 
        private string PartialViewPath(string name)
        {
            return $"~/Views/Partials/News/{name}.cshtml";
        }

        public ActionResult RenderListOfArticles(string category)
        {

            List<ArticleVM> model = new List<ArticleVM>();
            IPublishedContent news = CurrentPage.DescendantOrSelf("news");

            foreach (IPublishedContent post in news.Children.Where(x => x.IsVisible()) )
            {

                var getImage = post.Value<IPublishedContent>("articleLeadPicture");
                var getImageUrl = getImage.Url;
                model.Add(new ArticleVM(post.Value<DateTime>("articlePublishDate"), post.Value<string>("articleTitle"), post.Value<string>("articleAuthor"),post.Value<string>("articleExcerpt"), post.Value<string>("articleBody") , post.Value<string>("articleTitle"), getImage.Url, post.Url));
            }

            IEnumerable<ArticleVM> final;

            if (category == " " || category == null)
            {
                final = model.OrderByDescending(x => x.ArticlePublishDate);
            }
            else
            {
                final = model.OrderByDescending(x => x.ArticlePublishDate)
                        .Where(x => x.ArticleCategory == category);                   
            }

            return PartialView(PartialViewPath("_ListOfArticles"), final);
        }
    }
}