private void PublishModelPrepared <TModel>(TModel model)
{
//Components are not part of the controller life cycle.
//Hence, we could no longer use Action Filters to intercept the Models being returned
//as we do in the /Nop.Web.Framework/Mvc/Filters/PublishModelEventsAttribute.cs for controllers
//model prepared event
if (model is BaseAgsModel)
{
IEventPublisher eventPublisher = ServiceProviderFactory.ServiceProvider.GetRequiredService <IEventPublisher>();
//we publish the ModelPrepared event for all models as the BaseAgsModel,
//so you need to implement IConsumer<ModelPrepared<BaseAgsModel>> interface to handle this event
eventPublisher.ModelPrepared(model as BaseAgsModel);
}
if (model is IEnumerable <BaseAgsModel> modelCollection)
{
IEventPublisher eventPublisher = ServiceProviderFactory.ServiceProvider.GetRequiredService <IEventPublisher>();
//we publish the ModelPrepared event for collection as the IEnumerable<BaseAgsModel>,
//so you need to implement IConsumer<ModelPrepared<IEnumerable<BaseAgsModel>>> interface to handle this event
eventPublisher.ModelPrepared(modelCollection);
}
}
/// <summary>
/// Called after the action executes, before the action result
/// </summary>
/// <param name="context">A context for action filters</param>
public void OnActionExecuted(ActionExecutedContext context)
{
if (context == null)
{
throw new ArgumentNullException(nameof(context));
}
//check whether this filter has been overridden for the Action
var actionFilter = context.ActionDescriptor.FilterDescriptors
.Where(filterDescriptor => filterDescriptor.Scope == FilterScope.Action)
.Select(filterDescriptor => filterDescriptor.Filter).OfType <PublishModelEventsAttribute>().FirstOrDefault();
//whether to ignore this filter
if (actionFilter?.IgnoreFilter ?? _ignoreFilter)
{
return;
}
if (context.HttpContext.Request == null)
{
return;
}
//model prepared event
if (context.Controller is Controller controller && controller.ViewData.Model is BaseNopModel model)
{
//we publish the ModelPrepared event for all models as the BaseNopModel,
//so you need to implement IConsumer<ModelPrepared<BaseNopModel>> interface to handle this event
_eventPublisher.ModelPrepared(model);
}
}