public IActionResult AddBlog(String title, String content, Guid categoryId = default(Guid), Guid tagId = default(Guid))
{
if (String.IsNullOrEmpty(title))
{
throw new ArgumentNullException($"{nameof(title)}");
}
if (String.IsNullOrEmpty(content))
{
throw new ArgumentNullException($"{nameof(content)}");
}
if (categoryId == Guid.Empty)
{
throw new ArgumentNullException($"{nameof(categoryId)}");
}
if (tagId == Guid.Empty)
{
throw new ArgumentNullException($"{nameof(tagId)}");
}
_blogService.AddNewBlog(title, content, categoryId, tagId);
return(Json(new { }));
}