How to pass an object in a radio button tag?

Question

For my form I am using my Product model:

class Product < ActiveRecord::Base
  attr_accessible :purchase_date, :send_to_data
end

On my form I have the :purchase_date working correctly when I create multiple products but also want to make the radio_button_tag do the same:

<%= form_tag create_multiple_products_path, :method => :post do %>

  <%= date_select("product", "purchase_date")  %>

   <%= radio_button_tag(:send_to_data, 1) %>
   <%= radio_button_tag(:send_to_data, 0) %>


  <% @products.each_with_index do |product, index| %>
     <%= fields_for "products[#{index}]", product do |up| %>
        <%= render "fields", :f => up %>
     <% end %>
  <% end %>

  <%= submit_tag "Done" %>
<% end %>

This didn't work for me, my database doesn't flag as either false or true.

I think the problem lies in the params of the "send_to_data". Unlike the "purchase_date" it isn't finding the object (product).

{"product"=>{"purchase_date(2i)"=>"12", "purchase_date(3i)"=>"11", "purchase_date(1i)"=>"2011"},
"send_to_data"=>"1", 
"products"=>{"0"=>{"product_name"=>"Test", "price"=>"23", "product_store"=>"13", "exact_url"=>""},
"1"=>{"product_name"=>"", "price"=>"", "product_store"=>"", "exact_url"=>""},
"2"=>{"product_name"=>"", "price"=>"", "product_store"=>"", "exact_url"=>""},
"3"=>{"product_name"=>"", "price"=>"", "product_store"=>"", "exact_url"=>""},
"4"=>{"product_name"=>"", "price"=>"", "product_store"=>"", "exact_url"=>""}}, "commit"=>"Done"}

Is there a way to map it to the object like the purchase date does?

Answer 1

As far as I can see you confuse FormHelper and FormTagHelper. You use Form tag helper which, according to the documentation

(FormTagHelper) provides a number of methods for creating form tags that doesn’t rely on an Active Record object assigned to the template like FormHelper does.

This mean for ActiveRecord-based form you need to use use FormHelper (and its radio_button helper method).

Code with radio_button_tag form tag helper

<%= radio_button_tag(:send_to_data, 1) %>
<%= radio_button_tag(:send_to_data, 0) %>

generates the following HTML:

<input id="send_to_data_1" name="send_to_data" type="radio" value="1" />
<input id="send_to_data_0" name="send_to_data" type="radio" value="0" />

And code with radio_button form helper

<%= radio_button("product", :send_to_data, 1) %>
<%= radio_button("product", :send_to_data, 0) %>

generates:

 <input id="product_send_to_data_1" name="product[send_to_data]" type="radio" value="1" />
 <input id="product_send_to_data_0" name="product[send_to_data]" type="radio" value="0" />   

Hope this helps!

Answer 2

check this page form_helpers first, here, the right way should be

<%= radio_button_tag(:send_to_data, 1) %>
<%= radio_button_tag(:send_to_data, 0) %>