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

I was facing the same issue, after some research i found a solution using Rails' store_accessor to make keys of a serialized column accessible as attributes.

With this we can access "nested" attributes of a serialized column …

# post.rb
class Post < ApplicationRecord
  serialize :options
  store_accessor :options, :value1, :value2, :value3
end

# set / get values
post = Post.new
post.value1 = "foo"
post.value1
#=> "foo"
post.options['value1']
#=> "foo"

# strong parameters in posts_controller.rb
params.require(:post).permit(:value1, :value2, :value3)

# form.html.erb
<%= form_with model: @post, local: true do |f| %>
  <%= f.label :value1 %>
  <%= f.text_field :value1 %>
  # …
<% end %>