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Ressourcen:

• Episode 165: Edit Multiple
• Full episode source code

Quellcode:

# products_controller.rb
def edit_individual
  @products = Product.find(params[:product_ids])
end

def update_individual
  @products = Product.update(params[:products].keys, params[:products].values).reject { |p| p.errors.empty? }
  if @products.empty?
    flash[:notice] = "Products updated"
    redirect_to products_url
  else
    render :action => "edit_individual"
  end
end

# routes.rb
map.resources :products, :collection => { :edit_individual => :post, :update_individual => :put }

<!-- views/products/index.html.erb -->
<% form_tag edit_individual_products_path do %>
  <table>
    <tr>
      <th></th>
      <th>Name</th>
      <th>Category</th>
      <th>Price</th>
    </tr>
  <% for 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 you 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 %>

<!-- views/products/edit_individual.html.erb -->
<% form_tag update_individual_products_path, :method => :put do %>
  <% for product in @products %>
    <% fields_for "products[]", product do |f| %>
      <h2><%=h product.name %></h2>
      <%= render "fields", :f => f %>
    <% end %>
  <% end %>
  <p><%= submit_tag "Submit" %></p>
<% end %>

<!-- views/products/_fields.html.erb -->
<%= f.error_messages :object_name => "product" %>
<% if params[:field].blank? || params[:field] == "name" %>
<p>
  <%= f.label :name %><br />
  <%= f.text_field :name %>
</p>
<% end %>
<% if params[:field].blank? || params[:field] == "price" %>
<p>
  <%= f.label :price %><br />
  <%= f.text_field :price %>
</p>
<% end %>
<% if params[:field].blank? || params[:field] == "category_id" %>
<p>
  <%= f.label :category_id %><br />
  <%= f.collection_select :category_id, Category.all, :id, :name %>
</p>
<% end %>
<% if params[:field].blank? || params[:field] == "discontinued" %>
<p>
  <%= f.check_box :discontinued %>
  <%= f.label :discontinued %>
</p>
<% end %>