One to One relation

[Julien]

Hi,

I have a class with more than 60 fields. Our quality gate doesn't allow more than 20 fields. So I factorized my code and have some class with one to one relations.

Is there something that I can use to have only one grid with all my fields?

I tried something like this, and got an error data.AppFacts is undefined :

@(Html.Kendo().Grid<App>()
      .Name("grid")
      .Columns(columns =>
          {
              columns.Bound(a => a.Name);
              columns.Bound(a => a.AppData.DatabaseInstances);
              columns.Bound(a => a.AppFacts.ApplicationType);
          }
    )

[Preslav]

Hi Julien,

The provided code looks good. If the App model has a property AppFacts, and this property is of a class type that has ApplicationType property in it, everything should work as expected.

For example, I tested the following scenario:

namespace Kendo.Mvc.Examples.Models
{
    public class ProductViewModel
    {
        //...

        public CategoryViewModel Category
        {
            get;
            set;
        }
        
        //...
    }
}

//.............

namespace Kendo.Mvc.Examples.Models
{
	public class CategoryViewModel
    {
        public int CategoryID { get; set; }
        public string CategoryName { get; set; }
    }
}

//..................

Html.Kendo().Grid<Kendo.Mvc.Examples.Models.ProductViewModel>()
        .Name("grid")
        .Columns(columns =>
        {
            columns.Bound(p => p.Category.CategoryName);
        })
//....

The above code resulted in the following Grid: https://www.screencast.com/t/amgnTsdBOZ

 

Regards,
Preslav
Progress Telerik

[Julien]

Thanks for the reply,

I've got the same answer from a colleague and it's work fine for reading.

My problem occur when I want to create a new object.

In your exemple, when you create a new row, you might have an error because your CategoryViewModel is not defined.

[Preslav]

Hello Julien,

To create a new object correctly, assign a default value to the field in the model of the DataSource.

For example, check the code of this demo - https://demos.telerik.com/aspnet-core/grid/editing-custom

 

Regards,
Preslav
Progress Telerik