How to edit a Rails serialized field in a form?

Question

I have a data model in my Rails project that has a serialized field:

class Widget < ActiveRecord::Base
  serialize :options
end

The opti

Answer 1

No need setter/getters, I just defined in the model:

serialize :content_hash, Hash

Then in the view, I do (with simple_form, but similar with vanilla Rails):

  = f.simple_fields_for :content_hash do |chf|
    - @model_instance.content_hash.each_pair do |k,v|
      =chf.input k.to_sym, :as => :string, :input_html => {:value => v}

My last issue is how to let the user add a new key/value pair.