Category Archives: ASP.NET MVC

Switching to the DXA 2 model service in your DD4T application

On February 12th, SDL released DXA 2.0, the shiny new version of the Digital Experience Accelerator. Part of this new version is a new REST service called the model service, which is able to return content quicker, and in a leaner format. Not only that, the model service is also able to resolve links in the content on the fly. This is an important improvement, because link resolving is one of the most expensive operations in DXA as well as DD4T.

A full migration of your application from DD4T to DXA is far from trivial, at least not with the DXA 2.0 release that is currently out. But there is good news: it is very easy to start using the DXA model service in your DD4T .NET application (it is also possible with a Java DD4T application, but we’ll discuss that some other time). Your application is likely to become faster because of it.

There is one important condition: you have to use SDL Web 8.1 or higher, and DD4T 2.0 or higher, in order to upgrade to the model service.

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DD4T Custom ViewModel attributes

Customer Use case

Our customer had a requirement to send some HTTP headers with the last publication date of the page in it, in order to optimize browser caching. For this reason we needed to include the last published date from Tridion in our DD4T PageModel.

Context

The DD4T ViewModel functionality lacks the option to include the last publish date. Fortunately, you can create your own attributes.

In this blog I will show you how easy it is to create a custom attribute to include the last publish date of a page in your models. Continue reading

DD4T: Page and Content ViewModels – an End-to-End Example

One of the unwritten rules in MVC is that ViewModel classes should be kept very simple. They should basically represent data to be displayed in your views. Then, depending on the concrete implementation and the requirements, the whole mapping and connecting it all together part does not always stay simple.

The usage of ViewModels in DD4T 2.0 can actually be very simple, as the example code will try to show. Anything with a simple basis should be also extendable in an easy way and that is the main goal of the framework.

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