public IHttpActionResult Create(ArticleViewModel model)
{
if (string.IsNullOrWhiteSpace(model.Title))
{
return this.BadRequest("Article title cannot be null or empty!");
}
var userID = this.User.Identity.GetUserId();
var tags = GetTags(model);
var category = GetOrCreateCategory(model.Category);
var article = new Article
{
Title = model.Title,
Content = model.Content,
DateCreated = DateTime.Now,
CategoryId = category.Id,
AuthorId = userID,
Tags = tags,
};
this.data.Articles.Add(article);
this.data.SaveChanges();
model.Id = article.Id;
model.DateCreated = article.DateCreated;
model.Tags = article.Tags.Select(t => t.Name);
return this.CreatedAtRoute("DefaultApi", new { id = model.Id }, model);
}
private ICollection<Tag> GetTags(ArticleViewModel article)
{
if (string.IsNullOrWhiteSpace(article.Title))
{
throw new ArgumentNullException("Article title cannot be null or empty!");
}
var titleTags = article.Title.Split(' ');
var allTags = new HashSet<string>(titleTags);
// Check if .Tags is not null
foreach (var tag in article.Tags)
{
allTags.Add(tag);
}
var articleTags = new HashSet<Tag>();
foreach (var tagName in allTags)
{
var tag = this.data.Tags.All().FirstOrDefault(t => t.Name == tagName);
if (tag == null)
{
tag = new Tag { Name = tagName };
this.data.Tags.Add(tag);
}
articleTags.Add(tag);
}
return articleTags;
}