// POST categories
public IHttpActionResult Post(CategoryRepresentation value)
{
Category category;
try
{
category = new Category()
{
Title = value.Title
};
}
catch
{
return(BadRequest());
}
db.Categories.Add(category);
db.SaveChanges();
return(CreatedAtRoute("DefaultApi", new { id = category.Id }, new CategoryRepresentation()
{
Id = category.Id,
Title = category.Title
}));
}
// GET categories/1
public IHttpActionResult Get(int id)
{
var category = db.Categories.Include("Posts").ToList().Find(x => x.Id == id);
if (category == null)
{
return(NotFound());
}
var categoryRepresentation = new CategoryRepresentation()
{
Id = category.Id,
Title = category.Title,
Posts = category.Posts.Select(x => new PostRepresentation()
{
Id = x.Id,
Title = x.Title,
Content = x.Content
}).ToList()
};
return(Ok(categoryRepresentation));
}
// PUT: categories/1
public IHttpActionResult Put(int id, CategoryRepresentation newCategoryRepresentation)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
var newCategory = new Category()
{
Id = newCategoryRepresentation.Id,
Title = newCategoryRepresentation.Title,
Posts = newCategoryRepresentation.Posts?.Select(x => new Post()
{
Id = x.Id,
Title = x.Title
}).ToList() ?? new List <Post>(),
};
if (id != newCategoryRepresentation.Id)
{
return(BadRequest());
}
try
{
var category = db.Categories.Include(x => x.Posts).Single(x => x.Id == id);
db.Entry(category).CurrentValues.SetValues(newCategory);
foreach (var post in category.Posts.ToList())
{
// ReSharper disable once SimplifyLinqExpression
if (!newCategory.Posts.Any(x => x.Id == post.Id))
{
category.Posts.Remove(post);
}
}
foreach (var post in newCategory.Posts)
{
if (category.Posts.Any(x => x.Id == post.Id))
{
continue;
}
db.Posts.Attach(post);
category.Posts.Add(post);
}
db.SaveChanges();
}
catch (DbUpdateConcurrencyException)
{
if (!CategoryExists(id))
{
return(NotFound());
}
else
{
return(BadRequest());
}
}
catch (Exception)
{
return(BadRequest());
}
return(StatusCode(HttpStatusCode.NoContent));
}