DbExtensions.cs

public static class DbExtensions
{
    public static IQueryable<T> FilterByTenant<T>(this IQueryable<T> baseEntities, string
        tenantId) where T : BaseEntity
    {
        return baseEntities.Where(r => r.TenantId == tenantId);
    }
    public static IQueryable<T> FilterByTenantName<T>(this IQueryable<T> baseEntities, string
        tenantId) where T : BaseEntity
    {
        return baseEntities.Where(r => r.Tenant.Name == tenantId);
    }
}