Bartosz Sekula
Sep 28, 2021
  1625
(2 votes)

How to resolve current content context

With the release of CMS UI 11.36.2 it is now possible to resolve the current loaded content context from anywhere you may need.

It might be useful if you need any custom logic in any of the Content Events:

[ModuleDependency(typeof(EPiServer.Shell.UI.InitializationModule))]
public class CustomModule : IConfigurableModule
{
    public void Initialize(InitializationEngine context)
    {
        context.Locate.ContentEvents().CreatedContent += CreatedContent;
        context.Locate.ContentEvents().CreatingContent += CreatingContent;
    }

    private void CreatingContent(object sender, ContentEventArgs e)
    {   
        var currentContentContext = ServiceLocator.Current.GetInstance<CurrentContentContext>();
        // we know which content context initiated the CREATE operation        
        var currentContentLink = currentContentContext.ContentLink;

        var newlyCreatedContentLink = e.ContentLink; // --> null as at this point the ContentReference was not assigned yet
    }

    private void CreatedContent(object sender, ContentEventArgs e)
    {
        var newlyCreatedContentLink = e.ContentLink; // this is the ContentReference of the newly created content item
        // but we might need the ContentReference of the content that was being viewed when the CREATE operation was run
        var currentContentContext = ServiceLocator.Current.GetInstance<CurrentContentContext>();
        // this gives us the content context the editor was in
        var currentContentLink = currentContentContext.ContentLink;
    }

    public void Uninitialize(InitializationEngine context)
    {
        context.Locate.ContentEvents().CreatedContent -= CreatedContent;
        context.Locate.ContentEvents().CreatingContent -= CreatingContent;
    }

    public void ConfigureContainer(ServiceConfigurationContext context)
    {

    }
}

You might also need to know the current context in metadata aware components, like for example in this Editor Descriptor:

public class FooPageType : PageData 
{
    [EditorDescriptor(EditorDescriptorType = typeof(CollectionEditorDescriptor<OfferDetailsItem>))]
    public virtual IList<OfferDetailsItem> OfferDetailsItems { get; set; }
}

public class OfferDetailsItem
{
    [Display(Order = 1)]
    [UIHint("test")]
    public string Label { get; set; }
}

[PropertyDefinitionTypePlugIn]
public class OfferDetailsItemPropertyList : PropertyList<OfferDetailsItem>
{
}

[EditorDescriptorRegistration(TargetType = typeof(string), UIHint = "test")]
public class CustomXhtmlDescriptor : StringEditorDescriptor
{
    private readonly CurrentContentContext _currentContent;

    public CustomXhtmlDescriptor(CurrentContentContext currentContent)
    {
        _currentContent = currentContent;
    }

    public override void ModifyMetadata(ExtendedMetadata metadata, IEnumerable<Attribute> attributes)
    {
        base.ModifyMetadata(metadata, attributes);

        var ownerContent = metadata.FindOwnerContent(); // --> will return null because the object we annotate is not ContentData but simple POCO
        // https://world.optimizely.com/forum/developer-forum/CMS/Thread-Container/2016/1/current-content-for-propertylist-item-selection-factory/
        // and
        // https://world.optimizely.com/forum/developer-forum/CMS/Thread-Container/2021/9/tinymce-customization-depending-on-page-context/
        var currentContent = _currentContent.ContentLink; // --> will return correct page id
    }
}

Related forum posts that describe the problem:

https://world.optimizely.com/forum/developer-forum/CMS/Thread-Container/2021/9/tinymce-customization-depending-on-page-context/

https://world.optimizely.com/forum/developer-forum/CMS/Thread-Container/2020/12/get-value-of-contextepi-cms-contentdata/#234848

https://world.optimizely.com/forum/developer-forum/CMS/Thread-Container/2016/1/current-content-for-propertylist-item-selection-factory/

Sep 28, 2021

Comments

Tomas Hensrud Gulla
Tomas Hensrud Gulla Sep 28, 2021 11:54 AM

Will there be release notes describing this?

Bartosz Sekula
Bartosz Sekula Sep 28, 2021 11:55 AM

Yes, documentation is scheduled to be published. It will be available soon.

Tomas Hensrud Gulla
Tomas Hensrud Gulla Sep 28, 2021 11:59 AM

Excellent work, by the way. Thanks! :-)

Ravindra S. Rathore
Ravindra S. Rathore Sep 30, 2021 07:11 AM

👍

Please login to comment.
Latest blogs
4 tips and tricks for Hangfire on Optimizely CMS

Here are four useful tricks I always apply to any site where I use Hangfire (code included).

Stefan Holm Olsen | Mar 21, 2023 | Syndicated blog

The new LinkItem property in Optimizely CMS, and why it matters

In the past, we have used different tricks to achieve this. Now, the LinkItem property is finally built-in in Optimizely CMS 12!

Tomas Hensrud Gulla | Mar 20, 2023 | Syndicated blog

A day in the life of an Optimizely Developer - Vertical Slicing in CMS12

There is such a vast choice these days in how you can build a website, aside from all of the different programming languages out there, there are...

Graham Carr | Mar 20, 2023

Tag Helpers in CMS 12

Microsoft introduced the TagHelper back in the primordial soup of ASP.NET vNext which became .Net 5, then .NET Core then .Net 5 you know the drill…...

MartinOttosen | Mar 20, 2023