public async Task <IActionResult> Create([Bind("EntryId,TopicId")] EntryToTopic entryToTopic)
{
if (ModelState.IsValid)
{
_context.Add(new EntryToTopic()
{
EntryId = entryToTopic.EntryId,
TopicId = entryToTopic.TopicId,
IsPrimary = false
});
await _context.SaveChangesAsync();
return(RedirectToAction(nameof(Index)));
}
ViewData["EntryId"] = new SelectList(_context.Set <Entry>(), "Id", "Discriminator", entryToTopic.EntryId);
ViewData["TopicId"] = new SelectList(_context.Topics, "Id", "Id", entryToTopic.TopicId);
return(View(entryToTopic));
}
public async Task <IActionResult> Edit(int id, [Bind("EntryId,TopicId,IsPrimary")] EntryToTopic entryToTopic)
{
if (ModelState.IsValid)
{
try
{
_context.Update(entryToTopic);
await _context.SaveChangesAsync();
}
catch (Exception ex)
{
}
return(RedirectToAction(nameof(Index)));
}
ViewData["EntryId"] = new SelectList(_context.Set <Entry>(), "Id", "Discriminator", entryToTopic.EntryId);
ViewData["TopicId"] = new SelectList(_context.Topics, "Id", "Id", entryToTopic.TopicId);
return(View(entryToTopic));
}
public async Task <string> UpdateEntryAsync(EditArticle form)
{
var article = await _entryRepository
.FindBy(e => e.Id == form.Id)
.Include(e => e.EntryToTopics)
.FirstOrDefaultAsync();
var tracker = new EditTracker <Entry>();
if (article == default)
{
throw new AppException(ExceptionType.ARTICLE_NOT_FOUND);
}
try
{
article.LastModified = DateTime.Now;
tracker.Track(e => e.LastModified);
if (article.HeadLine != form.HeadLine)
{
article.HeadLine = form.HeadLine;
article.Slug = GenerateSlug(form.HeadLine);
tracker.Track(e => e.HeadLine);
tracker.Track(e => e.Slug);
}
if (article.Paragraph != form.Paragraph)
{
article.Paragraph = form.Paragraph;
tracker.Track(e => e.Paragraph);
}
if (article.Url != form.Url)
{
article.Url = form.Url;
tracker.Track(e => e.Url);
}
if (article.Body != form.Body)
{
article.Body = form.Body;
tracker.Track(e => e.Body);
}
if (form.Img != null)
{
article.Img = _imageProcessingService.ProcessFormImage(form.Img);
tracker.Track(e => e.Img);
}
if (form.Caption != null)
{
article.Caption = form.Caption;
tracker.Track(e => e.Caption);
}
_entryRepository.Update(article, tracker);
await _unitOfWork.Commit();
}
catch (Exception ex)
{
throw new AppException(ExceptionType.ARTICLE_UPDATE_FAILED, ex);
}
var topicId = article.EntryToTopics.FirstOrDefault(et => et.IsPrimary)?.TopicId;
if (topicId == default)
{
var existing = await _entryToTopicRepository
.FindByKey(article.Id, form.PrimaryTopic.Value);
if (existing != null)
{
existing.IsPrimary = true;
_entryToTopicRepository.Update(existing, e => e.IsPrimary);
}
else
{
// what happens if article doesn't have a primary topic
// get the form primary topic and set it
var primaryTopic = new EntryToTopic()
{
EntryId = article.Id,
TopicId = form.PrimaryTopic.Value,
IsPrimary = true
};
await _entryToTopicRepository.Create(primaryTopic);
}
await _unitOfWork.Commit();
}
else if (topicId.Value != form.PrimaryTopic.Value)
{
using (IDbContextTransaction transaction = await _unitOfWork.BeginTransaction())
{
try
{
// set new topic as primary
var primaryTopic = await _entryToTopicRepository
.FindBy(et => et.EntryId == article.Id && et.TopicId == topicId)
.FirstOrDefaultAsync();
primaryTopic.IsPrimary = false;
_entryToTopicRepository.Update(primaryTopic, e => e.IsPrimary);
// does this article already have this topic ?
var newPrimaryTopic = await _entryToTopicRepository
.FindByKey(article.Id, form.PrimaryTopic.Value);
if (newPrimaryTopic == default)
{
await _entryToTopicRepository.Create(new EntryToTopic()
{
EntryId = article.Id,
TopicId = form.PrimaryTopic.Value,
IsPrimary = true
});
}
else
{
newPrimaryTopic.IsPrimary = true;
_entryToTopicRepository.Update(newPrimaryTopic, e => e.IsPrimary);
}
await _unitOfWork.Commit();
transaction.Commit();
}
catch (Exception ex)
{
transaction.Rollback();
}
}
}
return(article.Slug);
}
