ruby on rails - Railscast 198, but using formtastic -

how what's covered in ryanb's railscast on editing multiple records individually, using formtastic? formtastic doesn't use form_tag, ryanb's method relies on.

the semantic_form_for wrapper around form_for can use same parameters. here formtastic version of ryan bates' screencast

views/products/edit_individual.html.erb

<% semantic_form_for :update_individual_products, :url => update_individual_products_path, :method => :put |f| %>   <% product in @products %>     <% f.fields_for "products[]", product |ff| %>       <h2><%=h product.name %></h2>       <%= render "fields", :f => ff %>     <% end %>   <% end %>   <p><%= submit_tag "submit" %></p> <% end %> 

views/products/index.html.erb

<% semantic_form_for :edit_individual_products, :url => edit_individual_products_path %>   <table>     <tr>       <th></th>       <th>name</th>       <th>category</th>       <th>price</th>     </tr>   <% product in @products %>     <tr>       <td><%= check_box_tag "product_ids[]", product.id %></td>       <td><%=h product.name %></td>       <td><%=h product.category.name %></td>       <td><%= number_to_currency product.price %></td>       <td><%= link_to "edit", edit_product_path(product) %></td>       <td><%= link_to "destroy", product, :confirm => 'are sure?', :method => :delete %></td>     </tr>   <% end %>   </table>   <p>     <%= select_tag :field, options_for_select([["all fields", ""], ["name", "name"], ["price", "price"], ["category", "category_id"], ["discontinued", "discontinued"]]) %>     <%= submit_tag "edit checked" %>   </p> <% end %> 

please note can use form_for helpers in formtastic.

update

if use nested attributes should work out of box, using fields_for on form partial. lets stick railscast example , that:

product.rb

has_many :commments accepts_nested_attributes_for :comments 

you can edit comments on _fields.html.erb of products like:

<%= f.fields_for :comments |cf| %>   <%=render 'comments/fields', :f=>cf%> <%end%> 

and make sure have fields partial in comments views.