What happened to AddOrUpdate in EF 7 / Core?

Question

I\'m writing a seed method using EntityFramework.Core 7.0.0-rc1-final.

What happened to the AddOrUpdate method of DbSet?

Answer 1

You can use this extension method I created to patch our codebase for the migration to EF Core:

   public static void AddOrUpdate(this DbSet dbSet, T data) where T : class
        {
            var t = typeof(T);
            PropertyInfo keyField = null;
            foreach (var propt in t.GetProperties())
            {
                var keyAttr = propt.GetCustomAttribute();
                if (keyAttr != null)
                {
                    keyField = propt;
                    break; // assume no composite keys
                }
            }
            if (keyField == null)
            {
                throw new Exception($"{t.FullName} does not have a KeyAttribute field. Unable to exec AddOrUpdate call.");
            }
            var keyVal = keyField.GetValue(data);
            var dbVal = dbSet.Find(keyVal);
            if (dbVal != null)
            {
                dbSet.Update(data);
                return;
            }
            dbSet.Add(data);
        }