cannot render a macro when there is no current publishedcontentrequest custom controllermodel - Extending Umbraco

Daniel Chenery 119 posts 465 karma points

Feb 09, 2016 @ 16:07

Cannot render a macro when there is no current PublishedContentRequest (Custom Controller/Model)

Hi,

I'm sure this is a familiar issue - I've found threads with the same problem, but unfortunately not fix it for me.

I'm also aware I can use [EnsurePublishedContentRequest(Id)], but unfortunately that solution also isn't available to me here.

As a quick overview, I'm using Umbraco as the 'Core' of my website, where some pages are dynamically generated via an API.

On an API generated page, I need to ability to add macros which is causing the above error. Any help would be very appreciated, it may well even be something very obvious that I've missed!

Controller:

public class ApiPageController : RenderMvcController
{
    public ActionResult Item(RenderModel model, string apiId)
    {
        // connect to the API and get the item page
        var api = new ApiConnection();
        var apiResult = api.getPage(apiId);

        UmbracoHelper UH = new UmbracoHelper(UmbracoContext.Current);
        var UmbracoApiPage = UH.TypedContentAtRoot()
            .DescendantsOrSelf("ApiContent")
                .Where(pc => pc.GetPropertyValue("apiId") != null)
                .FirstOrDefault();

        var vm = new ApiViewModel(UmbracoApiPage, CultureInfo.CurrentUICulture);

        // RouteData.DataTokens["umbraco"] = vm;
        // RouteData.DataTokens["umbraco-doc-request"] = UmbracoContext.Current.PublishedContentRequest;
        // RouteData.DataTokens["umbraco-context"] = UmbracoContext.Current;

        // assign the page to the View Model
        vm.apiPage = apiResult;

        return View(vm);
    }
}

Model:

public class ApiViewModel : RenderModel
{   
    // Not used, left in as a fallback
    public ApiViewModel() : this(new UmbracoHelper(UmbracoContext.Current)) { }

    // Not used, left in as a fallback
    public ApiViewModel(UmbracoHelper Umbraco)
        : this(Umbraco.TypedContentAtRoot().FirstOrDefault(), CultureInfo.CurrentUICulture)
    {
    }

    public ApiViewModel(IPublishedContent content, CultureInfo culture)
        : base(content, culture)
    {
        // Dummy constructor
    }

    public ApiPageResult ApiPage { get; set; }
}

If believe that's the code you need to see, but let me know if you need snippets of the View :)

Thanks,

Daniel

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Daniel 60 posts 174 karma points

Feb 09, 2016 @ 17:50

A small thing I see is:

UmbracoHelper UH = new UmbracoHelper(UmbracoContext.Current);
var UmbracoApiPage = UH.TypedContentAtRoot().DescendantsOrSelf("ApiContent")
    .Where(pc => pc.GetPropertyValue("apiId") != null).FirstOrDefault();

You should be able to just do:

var UmbracoApiPage = Umbraco.TypedContentAtRoot().DescendantsOrSelf("ApiContent")
    .Where(pc => pc.GetPropertyValue("apiId") != null).FirstOrDefault();

Regarding your problem, I think you may just need to replace your 3 constructors in your ViewModel with 1:

public ApiViewModel() : base(UmbracoContext.Current.PublishedContentRequest.PublishedContent) { }

Also are you following the route naming convention?

A document type with alias "ApiPage"
A template with alias "Item"

And I assume your view ("Item.cshtml") probably starts with:

@inherits UmbracoViewPage<ApiViewModel>

If you're following the standard routes, instead of

return View(vm)

You should be able to do:

return CurrentTemplate(vm);

Also, I'm not sure your ActionResult constructor is ok, but that's just because I've never tried, maybe your way is fine! A thing I know should work would be:

public ActionResult Item(ApiViewModel model)
{
    var apiId = Request["apiId"];
    ....null check etc. //then you can do:
    model.ApiPage = new ApiConnection().getPage(apiId)

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Daniel Chenery 119 posts 465 karma points

Feb 10, 2016 @ 08:59

Hi Daniel,

Regarding the creating a new UmbracoHelper, the only reason I'd opted for this method is because doing Umbraco.TypedContentAtRoot() etc... resulted in the following error:

DataTokens must contain an 'umbraco-doc-request' key with a PublishedContentRequest object

Unfortunately, I'm still given the same error with the changes above implemented.

I implemented the new ViewModel constructor, but I'm afraid UmbracoContext.Current.PublishedContentRequest is null :(

In regards to your other questions:

There is no document type with an alias of "ApiPage" - I didn't think it was required since these pages or dynamically generated
I do have a template called "Item"
The view page does have @inherits UmbracoViewPage<ApiViewModel> at the top

The ActionResult constructor is working, but I have a custom route setup in Global.asax :)

Thanks,

Daniel

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Daniel Chenery 119 posts 465 karma points

Feb 21, 2017 @ 09:04

For anyone else that has this issue, I've found a fix. Instead of inheriting from RenderModel I had to create a custom model which initiated the PublishedContentRequest (based off the EnsurePublishedContentRequest attribute).

Making custom models inherit from this appears to have fixed it.

public class PublishedContentRenderModel : IRenderModel
{
    public PublishedContentRenderModel(IPublishedContent content, CultureInfo culture)
    {
        if(content == null)
        {
            content = new UmbracoHelper(UmbracoContext.Current).TypedContentAtRoot().FirstOrDefault();
            Content = content;
            Culture = culture;
            return;
        }

        var baseUrl = HttpContext.Current.Request.Url.AbsoluteUri.Replace(HttpContext.Current.Request.Path, "/");
        var umbUrl = baseUrl + content.Url.TrimStart('/');

        var pcr = new PublishedContentRequest(
            new Uri(umbUrl),
            UmbracoContext.Current.RoutingContext,
            UmbracoConfig.For.UmbracoSettings().WebRouting,
            s => Roles.Provider.GetRolesForUser(s)
        );

        UmbracoContext.Current.PublishedContentRequest = pcr;
        UmbracoContext.Current.PublishedContentRequest.PublishedContent = content;

        pcr.Prepare();

        Content = content;
        Culture = culture;
    }

    public PublishedContentRenderModel()
        : this(default(IPublishedContent), CultureInfo.CurrentUICulture)
    {
    }

    public IPublishedContent Content { get; set; }

    public CultureInfo Culture { get; set; }
}

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Cannot render a macro when there is no current PublishedContentRequest (Custom Controller/Model)