public void PutSetDirectReports(int id, [FromBody] EmployeeDirectReports item)
{
// Attention - Employee set direct-reports - command pattern
// Ensure that an "item" is in the entity body
if (item == null)
{
return;
}
// Ensure that the id value in the URI matches the id value in the entity body
if (id != item.EmployeeId)
{
return;
}
// Ensure that we can use the incoming data
if (ModelState.IsValid)
{
// Attempt to update the item
m.EmployeeSetDirectReports(item);
}
else
{
return;
}
}
public EmployeeWithDetails EmployeeSetDirectReports(EmployeeDirectReports newItem)
{
// Attention - Manager - Employee - command to update the self-referencing to-many association
// Attempt to fetch the object
// When editing an object with a to-many collection,
// and you wish to edit the collection,
// MUST fetch its associated collection
var o = ds.Employees.Include("DirectReports").Include("ReportsTo")
.SingleOrDefault(e => e.EmployeeId == newItem.EmployeeId);
if (o == null)
{
// Problem - object was not found, so return
return(null);
}
else
{
// Update the object with the incoming values
// First, clear out the existing collection
// "DirectReports" is the badly-named to-many collection property
o.DirectReports.Clear();
// Then, go through the incoming items
// For each one, add to the fetched object's collection
foreach (var item in newItem.EmployeeIds)
{
var a = ds.Employees.Find(item);
if (a != null)
{
o.DirectReports.Add(a);
}
}
// Save changes
ds.SaveChanges();
return(mapper.Map <EmployeeWithDetails>(o));
}
}