How can I add a content type to an index programmatically?

Question

I am trying to programmatically create indexes corresponding to several types, so I can search for elements of a certain type in my controllers. (I tried using the type keyword in Lucene, but that doesn't seem to work at all no matter what I do, so I changed my approach.)

However, I cannot understand how to tell Orchard about the inclusion of a certain type in the index during the migration process. I tried using:

 var typeIndexing = ContentDefinitionManager.GetTypeDefinition(contentType) .Settings.GetModel<TypeIndexing>(); typeIndexing.List = typeIndexing.List.Concat(indexName.Yield()).ToArray(); 

but this returns null as a result of GetTypeDefinition() .

I use:

 ContentDefinitionManager.AlterTypeDefinition(contentType, builder => { builder.WithSetting("TypeIndexing.Indexes", indexName); }); 

but it looks like it replaces the previous configured index, if it works at all ( EDIT: nope), and I don't want to compress the existing settings. (The other person on the team is processing our recipe settings.)

Is there a place where I could touch this setting and save it and actually use Orchard outside the recipe file?

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To illustrate what I'm trying to accomplish using similar changes to the admin user interface, under Content Definition> [Content Type Name]> Change :

Front

After:

Answer 1

What you are looking for is the Indexed () extension method. It accepts the indexes you want to use in the content type.

 ContentDefinitionManager.AlterTypeDefinition(nameof(contentType),type => type .Indexed("FirstIndex", "SecondIndex"));