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

I don't understand why people are trying to find the primary key in the other answers. Just pass it when you're calling the method as it's done in EF 6 AddOrUpdate method.

public static TEntity AddOrUpdate(this DbSet dbSet, DbContext context, Func identifier, TEntity entity) where TEntity : class
{
    TEntity result = dbSet.Find(identifier.Invoke(entity));
    if (result != null)
    {
        context.Entry(result).CurrentValues.SetValues(entity);
        dbSet.Update(result);
        return result;
    }
    else
    {
        dbSet.Add(entity);
        return entity;
    }
}

and use it later like this:

dbContext.MyModels.AddOrUpdate(dbContext, model => m.Id, new MyModel() { Id = 3 });

Clean and performant.