public async Task <IActionResult> CreatePost(Post post)
{
if (!ModelState.IsValid)
{
return(View("Edit", post));
}
var newPost = new Post();
string formTags = Request.Form["categories"];
newPost.Title = post.Title.Trim();
if (!string.IsNullOrWhiteSpace(post.Slug))
{
newPost.Slug = PostHelpers.CreateSlug(post.Slug);
}
newPost.PubDate = DateTime.UtcNow;
newPost.IsPublished = post.IsPublished;
newPost.Content = post.Content.Trim();
newPost.Excerpt = PostHelpers.ShortenAndFormatText(post.Excerpt.Trim(), _excerptMaxLength);
newPost.LastModified = DateTime.UtcNow;
// Do we have a cover photo?
// Check the file length and don't bother attempting to read it if the file contains no content.
if (HttpContext.Request.Form.Files.Count != 0)
{
var newCoverPhoto = HttpContext.Request.Form.Files[0];
// yes
if (newCoverPhoto.Length > 0)
{
newPost.PostCoverPhoto = await _blog.SaveCoverPhotoAsync(newPost.Slug, newCoverPhoto);
}
}
// 1. We need to save post to db first to get id
await _blog.SavePostAsync(newPost);
// 2. Save files to disk
await _blog.SaveFilesToDiskAsync(newPost);
// 3 Update any changes from SaveFileToDiskAsync()
await _blog.UpdatePostAsync(newPost);
// Update post media
var oldMedia = await _blogContext.PostMedias
.AsNoTracking()
.Where(x => x.PostId == newPost.Id)
.ToListAsync();
var postMedia = await _blog.UpdatePostMediaAsync(newPost, oldMedia);
// new media?
if (postMedia.newMedia.Any())
{
foreach (var media in postMedia.newMedia)
{
await _blogContext.PostMedias.AddAsync(media);
await _blogContext.SaveChangesAsync();
}
}
// oldMedia
if (postMedia.oldMedia.Any())
{
foreach (var media in postMedia.oldMedia)
{
//await _blogContext.PostMedias.r(media)
var old = await _blogContext.PostMedias
.AsNoTracking()
.FirstOrDefaultAsync(x => x.Id == media.Id);
if (old == null)
{
continue;
}
_blogContext.PostMedias.Remove(old);
await _blogContext.SaveChangesAsync();
}
}
// Tags
// has tags, add them
if (!string.IsNullOrEmpty(formTags))
{
var tags = new List <PostTag>();
if (!string.IsNullOrEmpty(formTags))
{
tags = await formTags.Split(',').ToList().ProcessTagsAsync(newPost.Id);
if (tags.Any())
{
foreach (var t in tags)
{
await _blog.SavePostTagAsync(t);
}
}
}
}
var redirectLink = $"/Console/BlogPreview/{newPost.Id}";
return(Redirect(redirectLink));
}
public async Task <IActionResult> Edit(Post post)
{
if (!ModelState.IsValid)
{
return(View("Edit", post));
}
var existing = await _blog.GetPostByIdAsync(post.Id);
if (existing == null)
{
return(NotFound());
}
string formTags = Request.Form["categories"];
existing.IsPublished = post.IsPublished;
existing.Content = post.Content.Trim();
existing.Excerpt = PostHelpers.ShortenAndFormatText(post.Excerpt.Trim(), _excerptMaxLength);
existing.LastModified = DateTime.UtcNow;
var oldMedia = await _blogContext.PostMedias
.AsNoTracking()
.Where(x => x.PostId == existing.Id)
.ToListAsync();
// 1. Save Files to disk
await _blog.SaveFilesToDiskAsync(existing);
await _blog.UpdatePostAsync(existing);
// Update post media
var postMedia = await _blog.UpdatePostMediaAsync(existing, oldMedia);
// new media?
if (postMedia.newMedia.Any())
{
foreach (var media in postMedia.newMedia)
{
await _blogContext.PostMedias.AddAsync(media);
await _blogContext.SaveChangesAsync();
}
}
// oldMedia
if (postMedia.oldMedia.Any())
{
foreach (var media in postMedia.oldMedia)
{
// remove from db
var old = await _blogContext.PostMedias
.AsNoTracking()
.FirstOrDefaultAsync(x => x.Id == media.Id);
if (old == null)
{
continue;
}
_blogContext.PostMedias.Remove(old);
await _blogContext.SaveChangesAsync();
// Remove from file store
//await _blog.DeletePostFileAsync()
}
}
var newTags = await formTags.Split(',').ToList().ProcessTagsAsync(existing.Id);
var oldTags = await _blog.GetPostTags(post.Id);
// tags equal? take no action
if (!newTags.SequenceEqual(oldTags, new DefaultPostTagComparer()))
{
// delete old tags
foreach (var t in oldTags)
{
await _blog.DeletePostTagAsync(t.Id);
}
// add new tags
if (newTags.Any())
{
foreach (var t in newTags)
{
await _blog.SavePostTagAsync(t);
}
}
}
var redirectLink = $"/Console/BlogPreview/{post.Id}";
return(Redirect(redirectLink));
}