public SelectListItem BuildCategoryOption(Category category)
{
return new SelectListItem
{
Value = category.Id.ToString(),
Text = string.Join(CategoryPathSeparator,
category.GetCategoryPath()
.Select(x => x.Name)
.Concat(new[] {category.Name}))
};
}
public void Update(Category model)
{
if (model.ParentCategoryId == model.Id)
{
throw new InvalidOperationException("A category cannot be its own parent");
}
if (model.ParentCategoryId.HasValue &&
// ReSharper disable once PossibleInvalidOperationException
model.GetCategoryPath().Any(x => x.Id == model.ParentCategoryId.Value))
{
throw new InvalidOperationException("Cannot set the parent category to a child category");
}
_catalogContext.Entry(model).State = EntityState.Modified;
}