I have an implementation of a Generic Repository in Entity Framework which I am trying to improve to use the .Include(..) function provided by EF instead of including the navigation properties by string, in order to be able to safely rename properties.
Below is my current code:
public IQueryable<T> GetAll(
Expression<Func<T, bool>> filter = null,
Func<IQueryable<T>, IOrderedQueryable<T>> orderBy = null,
string includeProperties = "")
{
IQueryable<T> query = dbSet;
if (filter != null)
{
query = query.Where(filter);
}
foreach (var includeProperty in includeProperties.Split
(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries))
{
query = query.Include(includeProperty);
}
if (orderBy != null)
{
return orderBy(query);
}
else
{
return query;
}
}
I currently use this in the following way:
repository.GetAll(
u => u.Name = "John",
u => u.OrderBy(x => x.Name),
"Address.State",
);
My question is: how can I change the method in order to be able to call it in the following way (or similar):
repository.GetAll(
u => u.Name = "John",
u => u.OrderBy(x => x.Name),
u => u.Include(x => x.Address).ThenInclude(x => x.State),
);
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