/// <summary>
/// Deletes a <see cref="Post"/> by Id, if the post is a root page,
/// it will also delete all child pages.
/// </summary>
public async Task DeleteAsync(int id)
{
// SingleAsync will throw if id is not found or not unique
var post = await _entities.SingleAsync(c => c.Id == id);
// root page
if (post.Type == EPostType.Page && post.RootId == 0)
{
var posts = _entities.Where(po => po.RootId == id);
_db.RemoveRange(posts);
}
else
{
_db.Remove(post);
}
await _db.SaveChangesAsync();
}
/// <summary>
/// Deletes a <see cref="Post"/> by Id, if the post is a parent page,
/// it will also delete all child pages.
/// </summary>
public new async Task DeleteAsync(int id)
{
// throws if id not found or not unique
var post = await _entities.SingleAsync(c => c.Id == id);
// if blog post or child page
if (post.Type == EPostType.BlogPost || (post.ParentId.HasValue && post.ParentId > 0))
{
_db.Remove(post);
}
else // parent page which may have children
{
var posts = _entities.Where(p => p.ParentId == id).ToArray();
Array.Resize(ref posts, posts.Length + 1); // put the parent itself in
posts[posts.Length - 1] = post;
_db.RemoveRange(posts);
}
await _db.SaveChangesAsync();
}
