has_many belongs_to relationship not passing through params - ruby-on-rails

Question

I am making a small store admin
Product.rb
class Product < ActiveRecord::Base
has_many :product_options
accepts_nested_attributes_for :product_options
end
ProductOption.rb
class ProductOption < ActiveRecord::Base
belongs_to :product
end
products_controller.rb
class Admin::ProductsController < AdminApplicationController
def index
#products = Product.all
end
def new
#product = Product.new
end
def create
#product = Product.new(product_params)
if #product.save
redirect_to admin_products_path
end
#product_option = #product.product_options.create(params[:product_option])
end
def edit
#product = Product.find(params[:id])
end
def update
#product = Product.find(params[:id])
if #product.update(product_params)
redirect_to admin_products_path
end
end
def destroy
#product = Product.find(params[:id])
#product.destroy
flash[:notice] = "#{#product.name} has been deleted."
redirect_to admin_products_path
end
def upload
uploaded_io = params[:id]
File.open(Rails.root.join('public', 'product_pics', uploaded_io.original_filename), 'wb') do |file|
file.write(uploaded_io.read)
end
end
private
def product_params
params.require(:product).permit(:name, :product_id, :position, :product_description, :product_image_type, :product_image, :product_detail, :product_option_id, :option_name, :product_option )
end
end
product_option_controller.rb
class Admin::ProductOptionsController < AdminApplicationController
def index
#product_options = ProductOption.all
end
def new
#product_option = ProductOption.new
end
def create
#product_option = ProductOption.new(product_option_params)
end
def show
#product_option = ProductOption.find(params[:id])
end
end
private
def product_option_params
params.require(:product_option).permit(:option_name, :ranking, :total_redeemed, :product_id)
end
end
_form.html.erb
<%= simple_form_for([:admin, #product] , :html => {:multipart => true}) do |f| %>
<section class="main_content-header">
<div class="main_content-header-wrapper">
<nav class="main_content-breadcrumbs">
<ul class="breadcrumbs">
<li><%= link_to "All Products", admin_products_path %></li>
<h1> Edit Product </h1>
</ul>
</nav>
<div class="main_content-header-save">
<%= link_to "Cancel", admin_products_path, id: "main_content-header-save-cancel" %>
<%= f.submit %>
</div>
</div>
</section>
<div class="main_content-section">
<section class="main_content-section">
<div class="main_content-section-area">
<%= f.input :name %>
<%= f.input :product_description %>
<%= f.input :product_detail %>
<%= f.file_field :product_image %>
<p> If this product has options, enter them below</p>
<%= f.simple_fields_for :product_option, #product_option do |option_form| %>
<%= option_form.input :option_name %>
<% end %>
</div>
</section>
</div>
<% end %>
server output: ... keeps saying that :product_option is not permitted
Started POST "/admin/products" for 127.0.0.1 at 2014-10-15 16:13:25 -0700
Processing by Admin::ProductsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"t96EMVlDND42HuVUzxWuss2bYDVhBokieTqN2Gz3N9I=", "commit"=>"Create Product", "product"=>{"name"=>"cvncvbn", "product_description"=>"cvbn", "product_detail"=>"", "product_option"=>{"option_name"=>"cvnbnvcb"}}}
Unpermitted parameters: product_option
SQL (1.5ms) BEGIN
SQL (0.4ms) INSERT INTO `products` (`created_at`, `name`, `product_description`, `product_detail`, `updated_at`) VALUES (?, ?, ?, ?, ?) [["created_at", "2014-10-15 23:13:25"], ["name", "cvncvbn"], ["product_description", "cvbn"], ["product_detail", ""], ["updated_at", "2014-10-15 23:13:25"]]
(0.4ms) COMMIT
Redirected to http://localhost:3000/admin/products
SQL (0.1ms) BEGIN
SQL (0.2ms) INSERT INTO `product_options` (`product_id`) VALUES (?) [["product_id", 119]]
(0.3ms) COMMIT
Completed 302 Found in 10ms (ActiveRecord: 2.8ms)
Started GET "/admin/products" for 127.0.0.1 at 2014-10-15 16:13:25 -0700
Processing by Admin::ProductsController#index as HTML
Product Load (0.3ms) SELECT `products`.* FROM `products`
Rendered admin/products/index.html.erb within layouts/admin (11.7ms)
User Load (0.3ms) SELECT `users`.* FROM `users` WHERE `users`.`id` = 7 ORDER BY `users`.`id` ASC LIMIT 1
Rendered admin/_header.html.erb (1.4ms)
Rendered admin/_nav.html.erb (0.4ms)
Completed 200 OK in 21ms (Views: 19.8ms | ActiveRecord: 0.6ms)
The record gets saved, so in the products options table there is just the product_id, .. but no other params....have tried a million things over the past 6 hours... so i dont really have a list of all the possible options, .. but if someone can see a glaring mistake your wisdom would be greatly appreciated.
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I figured it out, i was not using accepts_nested_attributes correctly these are the changes I had to get it all work.
-deleted the product_options controller (it was not needed)
-changed the product_params:
private
def product_params
params.require(:product).permit(:name, :product_id, :position, :product_description, :product_image_type, :product_image, :product_detail, :product_option_id,
:product_options_attributes => [:id, :option_name, :ranking, :total_redeemed, :product_id])
end
end
-deleted this line from the create action of the products controller
#product_option = #product.product_options.create(params[:product_option])
-added this line to the new action of the products controller
#product.product_options.build
-added an s to the ":product_option" in this loop (and deleted the '#product_option")
<%= f.simple_fields_for :product_option, #product_option do |option_form| %>
<%= option_form.input :option_name %>
<% end %>
the main change was adding the S... without it nested attributes was not being called at all

Answer 1

Try something like
def product_params
params.require(:product).permit(:name, :product_id, :position, :product_description, :product_image_type, :product_image, :product_detail, :product_option_id, :option_name, product_option: [:option_name] )
end