Extend the existing content model

You can extend the existing basic content model by adding new or overriding existing properties.

Create model

using Nikcio.UHeadless.Base.Properties.Factories;
using Nikcio.UHeadless.Basics.Content.Models;
using Nikcio.UHeadless.Basics.ContentTypes.Models;
using Nikcio.UHeadless.Basics.Properties.Models;
using Nikcio.UHeadless.Content.Commands;
using Nikcio.UHeadless.Content.Factories;
using Nikcio.UHeadless.ContentTypes.Factories;

public class CustomBasicContent : BasicContent {

    public string MyCustomValue { get; set; }

    public CustomBasicContent(CreateContent createContent, IPropertyFactory<BasicProperty> propertyFactory, IContentTypeFactory<BasicContentType> contentTypeFactory, IContentFactory<BasicContent<BasicProperty, BasicContentType, BasicContentRedirect>, BasicProperty> contentFactory) : base(createContent, propertyFactory, contentTypeFactory, contentFactory) {
        MyCustomValue = "Custom Value";
    }
}

Create custom queries

using HotChocolate.Types;
using Nikcio.UHeadless.Basics.Properties.Models;
using Nikcio.UHeadless.Content.Basics.Models;
using Nikcio.UHeadless.Content.Queries;
using Nikcio.UHeadless.Core.GraphQL.Queries;

namespace Examples.Docs.Content;

[ExtendObjectType(typeof(Query))]
public class CustomBasicContentQuery : ContentQuery<CustomBasicContent, BasicProperty, BasicContentRedirect>
{
}

We need to create a custom query because it’s where the content is registered which content should be used.

Register new queries

In the startup.cs we need to register the new queries. Here we also need to register the unchanged queries because when GraphQL extensions are added they override the default extensions. So if we still would like to use the property and media queries they need to be added here.

var graphqlExtensions = (IRequestExecutorBuilder builder) =>
    builder
        .AddTypeExtension<CustomBasicContentQuery>()
        .AddTypeExtension<BasicPropertyQuery>()
        .AddTypeExtension<BasicMediaQuery>();

services.AddUmbraco(_env, _config)
    .AddBackOffice()
    .AddWebsite()
    .AddComposers()
    .AddUHeadless(new() {
        UHeadlessGraphQLOptions = new() {
            GraphQLExtensions = graphQLExtentions
        }
    })
    .Build();

Query

You can now query your new property.