public ArticleFullModel GetById(int id)
{
var responseMsg = this.PerformOperationAndHandleExceptions(
() =>
{
var context = this.contextFactory.Create() as NewsContext;
var article = context.Articles
.Include(art => art.Author)
.Include(art => art.Image)
.Include(art => art.Comments)
.Include(art => art.Tags)
.FirstOrDefault(art => art.Id == id);
if (article == null)
{
throw new InvalidOperationException("Article doesn't exist");
}
article.ReadCount++;
context.Articles.Attach(article);
context.SaveChanges();
var model = new ArticleFullModel()
{
Id = article.Id,
Title = article.Title,
Content = article.Content,
DatePublished = article.DatePublished,
Author = article.Author.DisplayName,
ImageUrl = article.Image.ThumbUrl,
Category = new CategoryModel
{
Id = article.Category.Id,
Name = article.Category.Name,
},
ReadCount = article.ReadCount,
Tags = (from tag in article.Tags
select tag.Name),
Comments = (from comment in article.Comments
select new CommentModel()
{
CommentedBy = comment.User.DisplayName,
Content = comment.Content,
DatePosted = comment.DatePosted
})
};
return(model);
});
return(responseMsg);
}
private void ValidateArticleModel(ArticleFullModel model)
{
if (model == null)
{
throw new InvalidOperationException("Invalid article!");
}
if (model.Content == null)
{
throw new ArgumentNullException("Cannot create article with empty content!");
}
if (model.Title == null)
{
throw new ArgumentNullException("Cannot create article without title!");
}
if (model.Category == null)
{
throw new InvalidOperationException("Cannot create article without category");
}
}
public HttpResponseMessage PutArticle(ArticleFullModel model,
[ValueProvider(typeof(HeaderValueProviderFactory <string>))] string sessionKey)
{
var responseMsg = this.PerformOperationAndHandleExceptions(
() =>
{
var context = this.contextFactory.Create() as NewsContext;
using (context)
{
this.ValidateSessionKey(sessionKey);
this.ValidateArticleModel(model);
var article = context.Articles.FirstOrDefault(art => art.Id == model.Id);
if (article == null)
{
throw new InvalidOperationException("Article doesn't exist");
}
var user = context.Users.FirstOrDefault(usr => usr.SessionKey == sessionKey);
var category = context.Categories.FirstOrDefault(cat => cat.Id == model.Category.Id);
article.Title = model.Title;
article.Content = model.Content;
article.DatePublished = DateTime.Now;
article.Author = user;
article.Category = category;
foreach (var tagString in model.Tags)
{
var tagEntity = context.Tags.FirstOrDefault(tag => tag.Name == tagString.ToLower());
if (tagEntity == null)
{
tagEntity = new Tag();
tagEntity.Name = tagString.ToLower();
context.Tags.Add(tagEntity);
context.SaveChanges();
}
if (!article.Tags.Contains(tagEntity))
{
article.Tags.Add(tagEntity);
}
}
string[] titleTags = model.Title.Split(new char[] { ' ', '.', ',', '!', '?' },
StringSplitOptions.RemoveEmptyEntries);
foreach (var tagString in titleTags)
{
var tagEntity = context.Tags.FirstOrDefault(tag => tag.Name == tagString.ToLower());
if (tagEntity == null)
{
tagEntity = new Tag();
tagEntity.Name = tagString.ToLower();
context.Tags.Add(tagEntity);
context.SaveChanges();
}
if (!article.Tags.Contains(tagEntity))
{
article.Tags.Add(tagEntity);
}
}
//context.Articles.Add(article);
context.SaveChanges();
ArticleModel createdModel = new ArticleModel()
{
Id = article.Id,
Title = article.Title,
ContentPreview = article.Content.Length > 197
? article.Content.Substring(0, 197) + "..."
: article.Content,
DatePublished = article.DatePublished,
Author = article.Author.DisplayName,
Category = new CategoryModel
{
Id = category.Id,
Name = category.Name,
},
ThumbUrl = article.Image.ThumbUrl,
ReadCount = article.ReadCount,
};
var response = this.Request.CreateResponse(HttpStatusCode.OK, createdModel);
return(response);
}
});
return(responseMsg);
}
