Hi, this is probably not at all related to h-store. If you have a form using the form_for helper and all the fields you include are not using the yielded form builder object, none of them will be signed with the authenticity token and the request will fail. This, to the best of my knowledge is one of the security features in rails.
If you want to use hidden fields with the form_for, I’d recommend using the ones provided with that API: `form.hidden_field ‘key’, value: ‘the_value_you_want_to_pass’
Hope this helps!