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  • Ayo Adesina 430 posts 1023 karma points
    Jun 09, 2018 @ 18:09
    Ayo Adesina
    0

    Umbraco Model Binder - How to get strongly typed objects from child nodes

    Extending Umbraco and using the API
    Umbraco 7

    I'm using Umbraco's Model Binder to generate strongly typed models from my document types to use in my code.

    This is working pretty well but I want to know how I can get strongly typed objects for the children of any given generated model.

    Here is an example:

      public ActionResult Index(HomePage model)
    {
        var components = model.Children.Where(x => x.DocumentTypeAlias == PageComponentsFolder.ModelTypeAlias)
            .Single().Children; 
    }

    HomePage is a strongly typed class generated by the Umbraco model builder. Under the home page node I have a page components folder with several other nodes that all inherit from a ComponentsBaseClass.

    How can I make my components variable above a strongly typed list of objects.

    Is this possible?

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  • Sotiris Filippidis 286 posts 1501 karma points
    Jun 09, 2018 @ 18:22
    Sotiris Filippidis
    0

    I think you should drop the where and just use 

    Children<T>()

    Note: If you are using composition, then you can request all pages that are composed with a specific page - those pages will implement an interface generated with the class, for example if you compose your pages with a document named BasePage and you need all children that are composed with BasePage you can have something like:

     .Children<IBasePage>()
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  • Ayo Adesina 430 posts 1023 karma points
    Jun 09, 2018 @ 18:45
    Ayo Adesina
    0

    I'm not using composition to create my document types (I should really look in to that, I have heard good things)

    But I tried to do this:

     var components = model.Children.Where(x => x.DocumentTypeAlias == PageComponentsFolder.ModelTypeAlias)
                .Single().Children<ComponentRoot>();

    All my different component document types inherit from ComponentRoot, there are no Interfaces as such (or that I know about) when using the model binder.....

    I'm thinking I might have to just do it the old way, running out of time :-)

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  • Ayo Adesina 430 posts 1023 karma points
    Jun 11, 2018 @ 09:26
    Ayo Adesina
    100

    Ok this is what I ended up with in the end, here is an example of how to use strongly typed models generated by the Umbraco model binder.

    var components = model.Children.Where(x => x.DocumentTypeAlias == PageComponentsFolder.ModelTypeAlias)
            .Single().Children; 

    @foreach (var component in components)
    {    
    string componentNodeTypeAlias = component.DocumentTypeAlias;

        switch (componentNodeTypeAlias)
        {
            case SimpleHero.ModelTypeAlias:
                @Html.Partial("component_simpleHero", component as SimpleHero)
                break;

            case VideoWithHtml.ModelTypeAlias:
                @Html.Partial("component_videoWithHTML", component as VideoWithHtml)
                break;
        }

    }
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  • Ben Norman 167 posts 276 karma points
    Jun 30, 2019 @ 07:00
    Ben Norman
    0

    Is there a way to get the class name from the ModelTypeAlias?

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