Rails 5 + gem simple_form and poro form object, issue

Hey, I’m getting an odd issue while using simple form on a PORO form object.

simply what is going on:

simple_form_for MyForm.new, url: url, method: :post do |form| =>  
undefined method `to_key' for #<MyForm:0x00559d8ba56990>
       Did you mean?  to_query

I have done plenty of simple forms + form objects only difference here is rails 5? Any thoughts?

Nvm, how can I delete this question?

class Myform
include ActiveModel::Model #< I only had ActiveModel opps