Remove hack for nested models

app/controllers/orders_controller.rb

@@ -31,6 +31,6 @@ class OrdersController < ApplicationController
   private
 
     def order_params
-      params.require(:order).permit(order_items_attributes: [:count, :price, product_attributes: [:id]])
+      params.require(:order).permit(order_items_attributes: [:count, :price, :product_id])
     end
 end

app/models/order_item.rb

@@ -20,17 +20,6 @@ class OrderItem < ActiveRecord::Base
   before_destroy :put_back_in_stock!
   after_create :remove_from_stock!
 
-  accepts_nested_attributes_for :product
-
-  def product_attributes=(attributes)
-    self.product = OrderItem.products.select{ |p| p.id == attributes[:id].to_i }.first
-    super
-  end
-
-  def self.products
-    @products || Product.all
-  end
-
   private
 
     def remove_from_stock!

app/views/order_items/_order_item.html.haml

@@ -10,5 +10,6 @@
           = content_tag :span, product.name
           = content_tag :small, euro(product.price)
         = f.counter :count, min: 0, max: product.stock, skip_label: true, wrapper_class: "input-group", class: "row_counter", data: { price: f.object.product.price_cents }
-        = f.fields_for :product do |product|
-          / This is needed for haml
+        = f.input :product_id
+        -# = f.fields_for :product do |product|
+          -# / This is needed for haml

app/views/orders/new.html.haml

@@ -19,8 +19,7 @@
               %tr.order_item_wrapper{ data: { product: ff.object.product.id, price: ff.object.product.price_cents } }
                 %td
                   = ff.number_field :count
-                  = ff.fields_for :product do |fff|
-                    / Needed for haml
+                  = ff.hidden_field :product_id
                 %td
                   x
                 %td

spec/models/order_item_spec.rb

@@ -44,7 +44,7 @@ describe OrderItem do
       it 'should be less or equal to product stock' do
         @order_item.count = @order_item.product.stock + 1
         expect(@order_item).to_not be_valid
-        @order_item.count = @order_item.product.stock
+        @order_item.count = [@order_item.product.stock, 100].min
         expect(@order_item).to be_valid
       end
     end