Rails multi-model form for new record

Question

Hello

I am trying to create a web app for a clothing store, where the store admin can generate lists of options for different products. For example, the admin can generate an option_list called 'bra sizes' and then attach options to that list.

I have two records:

class OptionList < ActiveRecord::Base
  has_and_belongs_to_many :products
  has_many :options
end

and:

class Option < ActiveRecord::Base
  belongs_to :option_lists 
  validates_uniqueness_of :name, :scope => :option_list_id
end

I have a form for optionlist, where I want to have a dynamic number of fields for the options, and to create new options with a '+' link that calls a javascript helper to insert_html after the last option field. To do tis, I put the option field in a partial.

I have tried to approach this using fields_for and accepts_nested_attributes_for with no luck. Does anyone know the best way to address this? Or is there a post somewhere else that anyone has come accross? Thanks for the help!

Answer 1

I found a tutorial on doing exaclty what I was trying to do:

Multiple Child Models in a Dynamic Form

It details specifically how to create a dynamic number of child models in a parent's new or edit form. It uses a helper with link_to_function to generate the fields for the new children.