public override async Task<IDisplayResult> EditAsync(ContentItem model, IUpdateModel updater)
{
// This method can get called when a new content item is created, at that point
// the query string contains a ListPart.ContainerId value, or when an
// existing content item has ContainedPart value. In both cases the hidden field
// needs to be rendered in the edit form to maintain the relationship with the parent.
if (model.Is<ContainedPart>())
{
return BuildShape(model.As<ContainedPart>().ListContentItemId);
}
var viewModel = new EditContainedPartViewModel();
if ( await updater.TryUpdateModelAsync(viewModel, "ListPart"))
{
// We are editing a content item that needs to be added to a container
// so we render the container id as part of the form
return BuildShape(viewModel.ContainerId);
}
return null;
}
public override async Task<IDisplayResult> UpdateAsync(ContentItem model, IUpdateModel updater)
{
var viewModel = new EditContainedPartViewModel();
if (await updater.TryUpdateModelAsync(viewModel, "ListPart"))
{
model.Weld<ContainedPart>();
model.Alter<ContainedPart>(x => x.ListContentItemId = viewModel.ContainerId);
}
return await base.UpdateAsync(model, updater);
}
