public Division AssignParentDivision(Division subDivision, Division parentDivision)
{
if (parentDivision.DivisionID == subDivision.DivisionID ||
subDivision.ParentDivisionID != null ||
parentDivision.SubdivisionsList.Any(x => x.DivisionID == subDivision.DivisionID))
{
return(null);
}
subDivision.ParentDivisionID = parentDivision.DivisionID;
subDivision.ParentDivision = parentDivision;
parentDivision.SubdivisionsList.Add(subDivision);
_parkSharkDbContext.Update(subDivision);
_parkSharkDbContext.SaveChanges();
return(subDivision);
}