Use Include() method in repository

Question

I have the following with EF 5:

var a = context.Posts.Include(x => x.Pack).Select(x => x.Pack.Id).ToList();

This works. Then I tried

Answer 1

I used the accepted answer but had to modify it a bit for EntityFramework Core. In my experience I had to keep the chain going or the previous query references were overwritten.

    public IQueryable Include(params Expression>[] includes)
    {
        IIncludableQueryable query = null;

        if(includes.Length > 0)
        {
            query = _dbSet.Include(includes[0]);
        }
        for (int queryIndex = 1; queryIndex < includes.Length; ++queryIndex)
        {
            query = query.Include(includes[queryIndex]);
        }

        return query == null ? _dbSet : (IQueryable)query;
    }