public IActionResult PreviewPage(string parentSlug, string childSlug)
{
try
{
// slugs coming in are not url encoded, encode them for the key to tempdata
if (!parentSlug.IsNullOrEmpty())
{
parentSlug = WebUtility.UrlEncode(parentSlug);
}
if (!childSlug.IsNullOrEmpty())
{
childSlug = WebUtility.UrlEncode(childSlug);
}
var key = BlogRoutes.GetPagePreviewRelativeLink(parentSlug, childSlug);
var pageVM = TempData.Get <PageVM>(key);
return(pageVM == null?View("404") : View("Page", pageVM));
}
catch (Exception)
{
// when user access the preview link directly or when user clicks on other links
// and navigates away during the preview, hacky need to find a better way.
return(RedirectToAction("ErrorCode", "Home", new { statusCode = 404 }));
}
}
/// <summary>
/// Returns preview url.
/// </summary>
/// <param name="pageIM"></param>
/// <returns></returns>
public async Task <JsonResult> OnPostPreviewAsync([FromBody] PageIM pageIM)
{
// title
var title = pageIM.Title.IsNullOrEmpty() ? "Untitled" : pageIM.Title;
// slug
var slug = PageService.SlugifyPageTitle(title);
// parent slug
var parentSlug = "";
if (pageIM.ParentId.HasValue && pageIM.ParentId > 0)
{
var parent = await pageService.GetAsync(pageIM.ParentId.Value);
parentSlug = parent.Slug;
}
// body
var body = PageService.ParseNavLinks(pageIM.Body,
parentSlug.IsNullOrEmpty() ? slug : parentSlug);
// author
var user = await userManager.GetUserAsync(HttpContext.User);
var author = user.DisplayName;
// date
var coreSettings = await settingService.GetSettingsAsync <CoreSettings>();
var date = DateTimeOffset.Parse(pageIM.PostDate).ToDisplayString(coreSettings.TimeZoneId);
// layout
var pageLayout = pageIM.PageLayout;
// preview relative link (the slugs are url encoded)
var prevRelLink = parentSlug.IsNullOrEmpty() ?
BlogRoutes.GetPagePreviewRelativeLink(slug) :
BlogRoutes.GetPagePreviewRelativeLink(parentSlug, slug);
// put vm in tempdata with preview link as key
var pageVM = new PageVM
{
Author = author,
Body = body,
CreatedOnDisplay = date,
Title = title,
PageLayout = pageLayout,
};
TempData.Put(prevRelLink, pageVM);
// return preview url
return(new JsonResult($"{Request.Scheme}://{Request.Host}{prevRelLink}"));
}
