public async Task OnPageHandlerExecutionAsync(PageHandlerExecutingContext context, PageHandlerExecutionDelegate next)
{
// do something before the action executes
var resultContext = await next();
// do something after the action executes; resultContext.Result will be set
if (resultContext.HandlerInstance is PageModel result)
{
var metaTags = result.ViewData[ViewDataConstants.OpenGraphViewModel] as OpenGraphViewModel;
if (metaTags == null)
{
metaTags = new OpenGraphViewModel();
}
if (!string.IsNullOrEmpty(metaTags.Title))
{
metaTags.Title = "TemplateV2.Razor";
}
if (!string.IsNullOrEmpty(metaTags.Description))
{
metaTags.Description = "Admin template for small business applications using ASP.NET Core 3.1 + Razor Pages";
}
metaTags.Url = context.HttpContext.Request.GetDisplayUrl();
metaTags.Type = "website";
result.ViewData[ViewDataConstants.OpenGraphViewModel] = metaTags;
}
}
public static void SetMeta(this ViewDataDictionary viewData, string title, string?description = null)
{
var model = viewData[ViewDataConstants.OpenGraphViewModel] as OpenGraphViewModel;
if (model == null)
{
model = new OpenGraphViewModel();
}
model.Title = title;
if (description != null)
{
model.Description = description;
}
viewData[ViewDataConstants.OpenGraphViewModel] = model;
}
public ActionResult OpenGraph(OpenGraphViewModel viewModel) => PartialView(viewModel);