mysql - Rails: Issue with recieving nested forms with has many through join -

i seem having problem receiving products through join table, it's giving me strange error seems receiving no id order. can assume because order has not been created yet, creating order during step anyway, order doesn't have id yet. problem.

here error recieve:

activerecord::recordnotfound in orderscontroller#create  couldn't find product id=1 order id=  rails.root: /billingsystem application trace | framework trace | full trace  app/controllers/orders_controller.rb:10:in `new' app/controllers/orders_controller.rb:10:in `create'  request  parameters:  {"utf8"=>"✓",  "authenticity_token"=>"je2wderoxe7pkwbhn60kafguxwaq8qdw4wbru51smfg=",  "order"=>{"client_id"=>"1",  "products_attributes"=>{"1368396234677"=>{"id"=>"1",  "_destroy"=>"false"}}},  "commit"=>"create order"}  show session dump  show env dump response  headers:  none 

new order view:

<% if current_user %>   <div id="dashboard">         <div id="logo"></div>         <table id="go_back_link_container">             <tr>                 <td>                     <div class="go_back_link">                         <%= link_to "<- go back", "/orders/view" %>                     </div>                 </td>                 <td>                     <div id="user_display">                         logged in <%= current_user.email %>.                         <%= link_to "log out", log_out_path %>                     </div>                 </td>             </tr>         </table>         <%= form_for @order, method: :post |f| %>             <% if @order.errors.any? %>                 <div class="error_messages">                     <% message in @order.errors.full_messages %>                         * <%= message %> <br>                     <% end %>                 </div>             <% end %>             <p>                 <%= f.label 'select client' %><br />                 <%= select :order, :client_id, client.all().collect { |c| [ (c.firstname + " " + c.surname), c.id ] } %>             </p>              <%= f.fields_for :products |pf| %>                 <% #render 'product_fields', f: builder %>             <% end %>             <%= link_to_add_fields "add product", f, :products %>              <p class="button"><%= f.submit %></p>         <% end %>         <% flash.each |name, msg| %>             <%= content_tag :div, "* " + msg, :id => "flash_#{name}" %><br />         <% end %>         <div id="copyright-notice"><div id="copyright_border">copyright © conner mccabe, rights reserved.</div></div>     </div> <% else %>     <script type="text/javascript">         window.location="<%= root_url %>"     </script> <% end %> 

order model:

class order < activerecord::base   has_many :orderedproducts     has_many :products, through: :orderedproducts     has_one :client      attr_accessible :client_id, :order_total, :delivery_date, :products, :products_attributes       accepts_nested_attributes_for :products, :allow_destroy => true      before_save :generate_total      def generate_total         self.order_total = self.products.map(&:product_price).sum     end end 

orders controller:

class orderscontroller < applicationcontroller   def view         @orders = order.all     end      def new         @order = order.new     end     def create         @order = order.new(params[:order])         if @order.save             redirect_to '/orders/view', :notice => "order created!"         else             render "new"         end     end end 

product fields partial:

<fieldset>   <%= f.select :id, product.all().collect {|p| [ p.product_name, p.id ] } %>    <%= f.hidden_field :_destroy %>   <%= link_to "remove", '#', class: "remove_fields" %> </fieldset> 

products model:

class product < activerecord::base   #this line makes these elements accessible outside of class.     attr_accessible :product_name, :product_price, :product_quantity, :product_supplier      has_many :orderedproducts     has_many :orders, through: :orderedproducts      #these attributes ensure data entered each element valid , present.     validates_presence_of :product_name     validates_presence_of :product_price     validates_numericality_of :product_price     validates_presence_of :product_quantity     validates_numericality_of :product_quantity     validates_presence_of :product_supplier  end 

application helper:

module applicationhelper   def link_to_add_fields(name, f, association)     new_object = f.object.send(association).klass.new     id = new_object.object_id     fields = f.fields_for(association, new_object, child_index: id) |builder|       render(association.to_s.singularize + "_fields", f: builder)     end     link_to(name, '#', class: "add_fields", data: {id: id, fields: fields.gsub("\n", "")})   end end 

ordered products model:

class orderedproduct < activerecord::base   attr_accessible :order_id, :product_id, :quantity_ordered   belongs_to :order   belongs_to :product end 

i have listed every possible file contain error, know it's bit excessive, it's , better include not @ all.

i followed railscast guide: http://railscasts.com/episodes/196-nested-model-form-revised am, edited suitable application.

thanks in advance.

we had similar issue on project, except relation singular. problem activerecord looking existing association; order.products.find(1). since order new record doesn't work.

you create own products_attributes= method , define correct behaviour. think use nested attributes join model (orderedproduct) instead of product.

class order   accepts_nested_attributes_for :orderedproducts end 

then adjust form fields appropriately. in new form

f.fields_for :products |pf| becomes f.fields_for :orderedproducts |pf|

in fields partial

<%= f.select :id, product.all().collect {|p| [ p.product_name, p.id ] } %> becomes <%= f.select :product_id, product.all().collect {|p| [ p.product_name, p.id ] } %>