How to set up form for a hash in Rails?

Question

I have some data associated with a model that is in a hash. The hash is generated in the controller: @hash.

What is the proper way to create a form for this

Answer 1

Based on this article you should change the name in text_field_tag to

<% @hash.keys.each do |key| %>
  

    <%= f.label key %>

    <%= text_field_tag "hash[" + key + "]", @hash[key] %> 
  
<% end %>