Question

For about a week now I have been trying to get a view to render. I have an application that needs to be able to export collections so I decided to use a line partial that renders as a .txt and .csv in the web browser. So far so good in terms of getting the entire collection to render (line by line). However, I am having trouble getting certain collection objects (in this case products) to duplicate themselves based on a certain attribute (size element).

The code below is kind of where I am stuck at now

Controller

class PexportController < ApplicationController
  layout 'csv'

  def index
  end

  def show
    @feed_template = params[:id]
    @products = Product.find :all
    @products.each do |product|
      unless product.size.nil? || product.size.empty? || product.size.kind_of?(Fixnum)
        @products << new_products_for(product)
      end
    end

    respond_to do |format|
      format.html
      format.text
    end
  end

  private

  def new_products_for(product = {})
    products = Array.new
    product.size.each do |p|
      products << Product.new(p.attributes)
    end
    products
  end
end

View

<%= render partial: 'pexport/p', collection: @products %>

Partial

<%= p.sku %>  <%= p.name %> <%= p.price %> ......

I basically just need to get the controller method to work. The attribute :size that I am using for the line duplicator is simply an array like so [1,2,3]. And I would like products that contain this size attribute to duplicate themselves based on the number of sizes in their size array. I am not even sure if I am going about it the right away but it has gotten to that point where I am going in circles so I figured I would post it.

Answer 1

Alternative answer: is there some reason you need to duplicate the entire object in the controller? You could simplify things by just doing something like this in your view:

<% if p.size.is_a?(Array) %>
  <% p.size.each do |s| %>
    <%= p.sku %>  <%= p.name %> <%= p.price %> <%= s %>
  <% end %>
<% else %>
  <%= p.sku %>  <%= p.name %> <%= p.price %> <%= p.size %>
<% end %>

Or something to that effect.