merge string into property data value before content is rendered

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Jack Guthrie 3 posts 94 karma points

Oct 24, 2017 @ 16:41
0

Merge string into property data value before content is rendered
Hi guys,

I'm brand new to Umbraco, but have been searching all over for a solution to this for days...

I'm looking for a way to merge values into a property's data value text string before the text is rendered on the page.

So, for example, a content editor would write some text and include a place-holder e.g. @@EventDate@@

When the text is rendered, the controller would find all instances of @@EventDate@@ and dynamically replace them with some value (retrieved from a database/computed)

I've tried various things similar to the code below (which obviously doesn't work because IPublishedContent is read-only).

I don't want to do a find and replace on the database itself because the merged values need to be dynamic.
```
public class HomeController : RenderMvcController
{
    private UmbracoContext _context;

    public HomeController()
    {
        _context = UmbracoContext.Current;
    }

    public ActionResult Home(RenderModel model)
    {
        var umbracoHelper = new Umbraco.Web.UmbracoHelper(_context);

        IPublishedContent pubContent = umbracoHelper.TypedContent(model.Content.Id);
        var pubContentArray = pubContent.Properties.ToArray();          

        foreach (var property in pubContentArray)
        {
            property.DataValue = property.DataValue.ToString().Replace("@@EventDate@@", "Some New Value");
        }

        RenderModel newRenderModel = new RenderModel(pubContent);

        return base.Index(newRenderModel);
    }
}
```
Any help or a pointer in the right direction would be greatly appreciated!

Cheers

Jack
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Jack Guthrie 3 posts 94 karma points

Oct 25, 2017 @ 09:55

Worked out a solution, I'll put it here in case anyone else needs a hand

Controller:

namespace UmbracoTestTwo.Controllers
{
    public class HomeController : RenderMvcController
    {
        // GET: Home
        private UmbracoContext _context;

        public HomeController()
        {
            _context = UmbracoContext.Current;
        }

        public ActionResult Home(RenderModel model)
        {
            var umbracoHelper = new Umbraco.Web.UmbracoHelper(_context);

            IPublishedContent pubContent = umbracoHelper.TypedContent(model.Content.Id);

            HomeViewModel viewModel = new HomeViewModel(pubContent, true);

            return base.Index(viewModel);
        }
    }
}

Controller passes IPublishedContent to the Model, which does replacements:

namespace UmbracoTestTwo.ViewModels
{
    public class HomeViewModel : RenderModel
    {
        public HomeViewModel(IPublishedContent content) : base(content)
        {
            Title = content.GetProperty("title").DataValue.ToString().Replace("@@test@@", "REPLACED TEST");
            Body = content.GetProperty("body").DataValue.ToString().Replace("@@test@@", "REPLACED TEST");
        }

        //Custom properties here...
        public string Title { get; set; }
        public string Body { get; set; }

    }
}

View then inherits from Umbraco.Web.Mvc.UmbracoViewPage instead of Umbraco.Web.Mvc.UmbracoTemplatePage. Now can use normal MVC Razor syntax Model.Title etc.

@using UmbracoTestTwo.ViewModels
@inherits Umbraco.Web.Mvc.UmbracoViewPage<UmbracoTestTwo.ViewModels.HomeViewModel>

@{
    Layout = "Master.cshtml";
}

<h1>Static content Home</h1>    

<h2>
    @Model.Title
</h2>

<p>
    @Model.Body
</p>

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Merge string into property data value before content is rendered