Algolia

Details an integration available for Algolia, built and maintained by Umbraco HQ.

This integration provides a custom dashboard and indexing component for managing search indices in Algolia.

Package Links

• NuGet install

• Source code

• Umbraco marketplace listing

Minimum version requirements

Umbraco CMS

Major	Minor/Patch
Version 10	10.3.1
Version 11	11.0.0

Authentication

The communication with Algolia is handled through their .NET API client, which requires an Application ID and an API key.

They are used to initialize the SearchClient which handles indexing and searching operations.

Configuration

The following configuration is required for working with the Algolia API:

appsettings.json

{
  "Umbraco": {
    "CMS": {
      "Integrations": {
        "Search": {
          "Algolia": {
            "Settings": {
              "ApplicationId": "[your_application_id]",
              "AdminApiKey": "[your_admin_api_key]",
              "SearchApiKey": "[your_search_api_key]"
            }
          }
        }
      }
    }
  }
}

Algolia comes with a set of predefined API keys:

Name	Purpose
Search-Only API key	Public API key used on the front end for performing search queries.
Admin API key	Used in the Umbraco backoffice for create-, update- or delete operations on the indices.

More details on other use cases for the Algolia API keys can be found in the Algolia Docs.

Working with the integration

The following details how you can work with the Algolia integration.

1. Go to the Settings section in the Umbraco CMS backoffice.

2. Locate the Algolia Search Management dashboard.

In this view, you will be able to create definitions for indices in Algolia.

3. Provide a name for the index for each indices.

4. Select the Document Types to be indexed.

5. Select the fields you want to include for each Document Type.

After creating an index, only the content definition is saved into the algoliaIndices table in Umbraco, and an empty index is created in Algolia.

The actual content payload is pushed to Algolia for indices created in Umbraco in two scenarios:

• From the list of indices, the Build action is triggered, resulting in all content of specific Document Types being sent as JSON to Algolia.

• Using a custom handler for CacheRefresher Notifications which will check the list of indices for the specific Document Type, and update a matching Algolia object. The handler will only run for SchedulingPublisher server or Single server roles.

From the dashboard, you can also perform a search over one selected index, or remove it.

Each Umbraco content item indexed in Algolia is referenced by the content entity's GUID Key field.

Algolia record structure

An indexed Algolia record matching an Umbraco content item contains a default set of properties. It is augmented by the list of properties defined within the Umbraco dashboard.

Properties that can vary by culture will have a record property correspondent with this naming convention: [property]-[culture].

The list of default properties consists of:

• ObjectID - GUIDfrom the content item'sKey` property

• Name - with culture variants if any

• CreateDate

• CreatorName

• UpdateDate

• WriterName

• TemplateId

• Level

• Path

• ContentTypeAlias

• Url - with culture variants if any

• Any registered properties on the Document Type

Extending the Algolia indexing

Indexing the content for Algolia is based on the IDataEditor.PropertyIndexValueFactory property from Umbraco CMS, the indexed value of the property being retrieved using the GetIndexValues method.

The integration uses the same conversion process as Umbraco CMS uses for Examine, and apply a custom converter afterwards.

The ContentBuilder is responsible for creating the record object that will be pushed to Algolia and the AlgoliaSearchPropertyIndexValueFactory implementation of IAlgoliaSearchPropertyIndexValueFactory will return the property value.

To customize the returned value from Umbraco CMS you would need to use a custom converter specific to the particular indexed Umbraco property editor.

To extend the behavior, there are available options:

Version 2.0.0 and up

Starting with version 2.0.0, we provide a collection of converters for the following Umbraco property editors:

• Umbraco.TrueFalse

• Umbraco.Decimal

• Umbraco.Integer

• Umbraco.MediaPicker3

• Umbraco.Tags

To create a new converter one should implement the IAlgoliaIndexValueConverter interface. Then specify the name of the property editor and add the new implementation. The new converter will then need to be added to the Algolia Converters collection.

To do so, follow these steps:

1. Create the new converter

 public class MyTagsConverter : IAlgoliaIndexValueConverter
 {
     public string Name => Core.Constants.PropertyEditors.Aliases.Tags;

     public object ParseIndexValues(IEnumerable<object> indexValues)
     {
         return new[] { "Umbraco", "is", "awesome" };
     }
 }

2. Replace the default converter (if one exists) with the new one

public static class MyUmbracoExtensions
{
    public static IUmbracoBuilder AddMyAlgoliaConverters(this IUmbracoBuilder builder)
    {
        builder.AlgoliaConverters()
                .Remove<UmbracoTagsConverter>()
                .Append<MyTagsConverter>();

        return builder;
    }
}

3. Inject custom converters

services.AddUmbraco(_env, _config)
    .AddBackOffice()
    .AddWebsite()
    .AddDeliveryApi()
    .AddMyAlgoliaConverters()
    .AddComposers()
    .Build();

Up to version 1.5.0

These implementations contain a custom converter for the Umbraco.MediaPicker3 property editor.

If a different implementation is required, you will need to follow these steps:

1. Inherit from AlgoliaSearchPropertyIndexValueFactory

2. Override the GetValue method

3. Add custom handlers to the Converters dictionary

4. Register your implementation in the composer

The following code sample demonstrates this approach:

 public class ExtendedAlgoliaSearchPropertyIndexValueFactory : AlgoliaSearchPropertyIndexValueFactory
  {
      private readonly IMediaService _mediaService;

      public ExtendedAlgoliaSearchPropertyIndexValueFactory(IDataTypeService dataTypeService, IMediaService mediaService)
          : base(dataTypeService, mediaService)
      {
          _mediaService = mediaService;

          Converters = new Dictionary<string, Func<KeyValuePair<string, IEnumerable<object>>, string>>
          {
              { Core.Constants.PropertyEditors.Aliases.MediaPicker3, ExtendedMediaPickerConverter }
          };
      }

      public override KeyValuePair<string, string> GetValue(IProperty property, string culture)
      {
          return base.GetValue(property, culture);
      }

      private string ExtendedMediaPickerConverter(KeyValuePair<string, IEnumerable<object>> indexValue)
      {
          return "my custom converter for media picker";
      }

  }

Extension registration

builder.Services.AddScoped<IAlgoliaSearchPropertyIndexValueFactory, ExtendedAlgoliaSearchPropertyIndexValueFactory>();