I have two tables that are joined by a link table and exposed through OData / Entity Framework:
- USERS
- USERGROUP
Using ~/api/Users, the following [USER] API controller action returns results:
public IEnumerable<USER> Get(ODataQueryOptions<USER> options)
{
var unitOfWork = new ATMS.Repository.UnitOfWork(_dbContext);
var users = options.ApplyTo(unitOfWork.Repository<USER>().Queryable
.Include(u => u.USERGROUPS)
.OrderBy(order => order.USERNAME))
.Cast<USER>().ToList();
unitOfWork.Save(); // includes Dispose()
return users;
}
I am, however, unable to apply the ODataQueryOptions to the following [USERGROUP] API controller action:
public IEnumerable<USERGROUP> Get(ODataQueryOptions<USER> options)
{
var unitOfWork = new ATMS.Repository.UnitOfWork(_dbContext);
var userGroups = options.ApplyTo(unitOfWork.Repository<USERGROUP>().Queryable
.Include(u => u.USERS)
.OrderBy(order => order.GROUPNAME))
.Cast<USERGROUP>().ToList();
unitOfWork.Save(); // includes Dispose()
return userGroups.AsQueryable();
}
When I do, I get the following error:
Cannot apply ODataQueryOptions of 'DAL.USER' to IQueryable of 'DAL.USERGROUP'.
Instead, I have to omit the options.ApplyTo(...):
var userGroups = unitOfWork.Repository<USERGROUP>()
.Query()
.Include(u => u.USERS)
.Get()
.OrderBy(order => order.GROUPNAME);
Can someone please explain to me why this is?
Thanks.