public async Task <ActionResult <Post> > PostPost(Post post)
{
var lastPost = await _context.Post.OrderByDescending(postToDes => postToDes.Id).FirstOrDefaultAsync();
var lastPostNumber = Base62Converter.BaseToLong(lastPost.UniqueUrl);
post.UniqueUrl = Base62Converter.LongToBase(lastPostNumber + 1);
_context.Post.Add(post);
await _context.SaveChangesAsync();
return(CreatedAtAction("GetPost", new { id = post.Id }, post));
}