public void Create(Post model)
{
using (var db = new CmsContext())
{
var post = db.Posts.SingleOrDefault(p => p.Id == model.Id);
if (post != null)
{
throw new ArgumentException("A post with the id of " + model.Id + " already exists.");
}
db.Posts.Add(model);
db.SaveChanges();
}
}
public void Delete(string id)
{
using (var db = new CmsContext())
{
var post = db.Posts.SingleOrDefault(p => p.Id == id);
if (post == null)
{
throw new KeyNotFoundException("The post with the id of " + id + " does not exist");
}
db.Posts.Remove(post);
db.SaveChanges();
}
}
public void Edit(string id, Post updatedItem)
{
using (var db = new CmsContext())
{
var post = db.Posts.SingleOrDefault(p => p.Id == id);
if (post == null)
{
throw new KeyNotFoundException("A post with the id of " + id + " does not exist in the data store.");
}
post.Id = updatedItem.Id;
post.Title = updatedItem.Title;
post.Content = updatedItem.Content;
post.Published = updatedItem.Published;
post.Tags = updatedItem.Tags;
db.SaveChanges();
}
}
public void Delete(string tag)
{
using (var db = new CmsContext())
{
var posts = db.Posts.Where(post =>
post.Tags.Contains(tag, StringComparer.CurrentCultureIgnoreCase))
.ToList();
if (!posts.Any())
{
throw new KeyNotFoundException("The tag " + tag + " does not exist.");
}
foreach (var post in posts)
{
post.Tags.Remove(tag);
}
db.SaveChanges();
}
}
public void Edit(string existingTag, string newTag)
{
using (var db = new CmsContext())
{
var posts = db.Posts.Where(p => p.CombinedTags.Contains(existingTag)).ToList();
posts = posts
.Where(t => t.Tags.Contains(existingTag, StringComparer.CurrentCultureIgnoreCase))
.ToList();
if (!posts.Any())
{
throw new KeyNotFoundException("The tag " + existingTag + " does not exists.");
}
foreach (var post in posts)
{
post.Tags.Remove(existingTag);
post.Tags.Add(newTag);
}
db.SaveChanges();
}
}
