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  • Daniel Rogers 143 posts 742 karma points
    Oct 07, 2021 @ 23:09
    Daniel Rogers
    0

    Exmaine a field containing Multinode tree content

    Using Umbraco8

    I have to field on my product listing 1. Multinode tree of Brands "productBrand" 2. Multinode tree of Categories "productCategory"

    I are using Examine "ExternalIndexes" to get a list of all the products and this is working.

    But how do I get a list filtered by my 2 Multinode trees.

    I can pass the field name thats easy, but what do I do for the criteria

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  • Erik Eelman 82 posts 322 karma points
    Oct 11, 2021 @ 14:15
    Erik Eelman
    0

    Hi Daniel,

    You can add a custom field to the index with the parsed names or id's of your selected multinode tree picker items. Something like this:

    public class IndexComponent : IComponent
    {
        private readonly IExamineManager _examineManager;
        private readonly IUmbracoContextFactory _umbracoContextFactory;

        public IndexComponent(IExamineManager examineManager,
                              IUmbracoContextFactory umbracoContextFactory)
        {
            _websiteIndexCreator = websiteIndexCreator;
            _examineManager = examineManager;
            _umbracoContextFactory = umbracoContextFactory;
        }

        public void Initialize()
        {
            if (_examineManager.TryGetIndex(Constants.UmbracoIndexes.ExternalIndexName, out IIndex websiteIndex))
            {
                websiteIndex.FieldDefinitionCollection.AddOrUpdate(new FieldDefinition("productBrand_parsed", FieldDefinitionTypes.FullText));
            }
        }

        private void OnIndexTransform(object sender, IndexingItemEventArgs e)
        {
            using (var context = _umbracoContextFactory.EnsureUmbracoContext())
            {
                var contentId = int.Parse(e.ValueSet.Id);
                var content = context.UmbracoContext.Content.GetById(contentId);
                if (content is YourPageType contentPage)
                {
                    e.ValueSet.Add(productBrand_parsed, string.Join(",", contentPage.ProductBrand.Select(x => x.Name)));
                }

            }
        }

        public void Terminate()
        { }
    }

    After this your index has a new field called: productBrand_parsed. You can search in this field with the name of the brand.

    You can find more information about custimizing the index here:

    https://our.umbraco.com/documentation/reference/searching/Examine/indexing/

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  • Daniel Rogers 143 posts 742 karma points
    Oct 13, 2021 @ 14:01
    Daniel Rogers
    100

    Thanks Erik for the help.

    Im getting there.

    I have got to the point of registering the indexer and initializing it with 4 new fields.

    However they dont appear in the backoffice if I do a manual examine. But that might be related to my next points.

    1. What is the purpose of this line

      _websiteIndexCreator = websiteIndexCreator;

    2. what triggers OnIndexTransform function as if I break point here the code never breaks.

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  • Erik Eelman 82 posts 322 karma points
    Oct 15, 2021 @ 12:42
    Erik Eelman
    1

    Hi Daniel,

    I see i forgot to add some code when creating the example. The init function needs some code to bind the onIndexTransform event: 

    if (websiteIndex is BaseIndexProvider baseIndex)
{
     baseIndex.TransformingIndexValues += OnIndexTransform;
}

    So you need to update the initialize function to something like this:

     public void Initialize()
    {
        if (_examineManager.TryGetIndex(Constants.UmbracoIndexes.ExternalIndexName, out IIndex websiteIndex))
        {
            websiteIndex.FieldDefinitionCollection.AddOrUpdate(new FieldDefinition("productBrand_parsed", FieldDefinitionTypes.FullText));

            if (websiteIndex is BaseIndexProvider baseIndex)
            {
                baseIndex.TransformingIndexValues += OnIndexTransform;
            }
        }
    }

    You can remove the part with: 

    websiteIndexCreator = websiteIndexCreator;
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  • Daniel Rogers 143 posts 742 karma points
    Oct 18, 2021 @ 01:11
    Daniel Rogers
    0

    Thanks Erik for the help.

    Im getting there.

    I have got to the point of registering the indexer and initializing it with 4 new fields.

    However they dont appear in the backoffice if I do a manual examine. But that might be related to my next points.

    1. What is the purpose of this line

      _websiteIndexCreator = websiteIndexCreator;

    2. what triggers OnIndexTransform function as if I break point here the code never breaks.

    Copy Link
  • Daniel Rogers 143 posts 742 karma points
    Oct 18, 2021 @ 01:08
    Daniel Rogers
    0

    Thanks Erik for you help.

    With a few changes I have got it going.

    needed to add 

    public class CustomizeIndexComposer : ComponentComposer<IndexComponent> { }

    before 

    public class public class IndexComponent : IComponent
...}

    to register the composer

    e.ValueSet.Add(productBrand_parsed, string.Join(",", contentPage.ProductBrand.Select(x => x.Name)));

    changed to 

                Ibd_eCommerce_Brand brand = (Ibd_eCommerce_Brand)contentPage.ProductBrand ;

            e.ValueSet.Add("productBrand_parsed", string.Join(",", brand.Id.ToString()));

    didn't like .Select

    on side not are you able to give me some insite to this issue as well

    https://our.umbraco.com/forum/using-umbraco-and-getting-started/107288-examine-get-exact-doc-type

    Sorry Erik I marked the wrong post as the solution. Your too answers are the solution.

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