Glass Mapper 5 lazy loading

Question

We migrated to Sitecore 10.1 and Glass Mapper is upgraded to 5.8.177.0 from 4.3.4.197.

I noticed the mapping was not working.

I changed the code from

var centreHours = glassContext.GetItem<TradingHoursModel>(Rendering.DataSourceItem.Fields["Centre Hours"].Value);

to

 var centreHours = _mvcContext.SitecoreService.GetItem<TradingHoursModel>(Rendering.DataSourceItem.Fields["Centre Hours"].Value);

The model was null and then I added x.LazyDisabled()

var centreHours =  _mvcContext.SitecoreService.GetItem<TradingHoursModel>(Rendering.DataSourceItem.Fields["Centre Hours Datasource"].Value, x => x.LazyDisabled());

It started working after x.LazyDisabled(). Do I need to pass x.LazyDisabled() in all the .GetItem method?

Since this is a data source item, I also tried the following code but it didn't work and the model was null.

_mvcContext.GetDataSourceItem<TradingHoursModel>(new GetKnownOptions { Lazy = Glass.Mapper.LazyLoading.Disabled});

Answer 1

I assume that you have written a generic class for all the MVCContent Sitecore service methods. If you don't want to pass x.LazyDisabled() in all the .GetItem methods, you can modify your code as below:

  public T GetItem<T>(GetItemOptions options) where T : class
    {
        options.Lazy = Glass.Mapper.LazyLoading.Disabled;
        return _mvcContext.SitecoreService.GetItem<T>(options);
    }

Other options with LazyLoading:

public enum LazyLoading
{
    Enabled = 0,
    Disabled = 10,
    OnlyReferenced = 20
}

Update:

Refer to below sample code to create a generic class:

 public class RenderingRepository : IRenderingRepository
 {
    private readonly IMvcContext _mvcContext;

    public RenderingRepository(IMvcContext mvcContext)
    {
        _mvcContext = mvcContext;
    }
    public T GetItem<T>(GetItemOptions options) where T : class
    {
        options.Lazy = Glass.Mapper.LazyLoading.Disabled;
        return _mvcContext.SitecoreService.GetItem<T>(options);
    }
}

Register it into your DI:

 serviceCollection.AddTransient<IRenderingRepository, RenderingRepository>();

Now using Controller Constructor DI, you can use this method in your controller Action Result:

public class SampleController : SitecoreController
{
    private readonly IRenderingRepository _renderingRepository;
    public Sample(IRenderingRepository renderingRepository)
    {
        _renderingRepository = renderingRepository;
    }
    public ActionResult Index()
    {
        return View(_renderingRepository.MethodName());
    }
}