Retrieve field with Join in RUBY/Ror view

Question

I have a big doubt, I’m a beginner in Ruby, and I’m not able to print the value of a field in my view, the result is this.

My Model:

    class Pedido < ActiveRecord::Base
      has_many :produtos      

      scope :waiting, -> { where(status: 1) }
end

My Controller:

class Backoffice::PedidosController < BackofficeController

  def index
    @pedidos = Pedido.waiting       
  end

end

And in my View it’s like this:

<tbody>               
  <% @pedidos.each do |pedido| %>
    <tr> 
      <th><%=pedido.id%></th>
      <th><%=pedido.status%></th>
      <th><%=pedido.created_at%></th>
      <th><%=pedido.produtos.select(:valor) %></th>
     </tr>
   <% end %>
 </tbody>

I have tried several ways and always print what is in the print, if I change the line to

<%=product request.product. %>

error on the page.

Someone can give me a light?

Answer 1

Try to specify which Produto of the association, for example:

<%= pedido.produtos.first.valor %> In this case, returns the first Produto of the association.

I don’t know how it will be implemented, but finally, how Pedido has many Produtos, when you search for this association, returns a collection of Produtos, and you need to specify which one you want.

Or if you want to add up the value of Produtos:

<%= pedido.produtos.sum(:valor) %>